Using Transition Metal-containing Catalyst Patents (Class 585/417)
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Patent number: 11498890Abstract: Process for the conversion of non-oxidative coupling of methane to ethylene, under non-oxidative conditions, comprising: providing a first stream containing at least 50 vol. % of methane based on the total volume of said first stream; providing a catalyst; putting in contact said first stream with said catalyst at a weight hour space velocity ranging from 0.5 to 100 h?1, a temperature ranging from 500° C. to 1100° C. and a pressure ranging from 0.1 MPa to 5 Mpa in the absence of oxygen; recovering a second stream containing unconverted methane if any, ethylene and hydrocarbons having at least 2 carbon atoms. Said process is remarkable in that said catalyst is a synthetic zeolite material, containing at least one metal M with silicon to metal M molar ratio Si/M as determined by inductively coupled plasma optical emission spectrometry ranging from 100 to 65440 and in that said metal M is incorporated inside of the zeolite tetrahedral sites.Type: GrantFiled: October 26, 2020Date of Patent: November 15, 2022Assignees: TOTALENERGIES ONETECH, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)Inventors: Florent Dubray, Svetlana Mintova, Jean-Pierre Gilson, Stanislav Konnov, Stijn Van Daele, Nikolai Nesterenko
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Patent number: 11027983Abstract: An as-synthesized microporous material having a CHA structure and containing at least one organic structure directing agent that has the following general structure of the quaternary ammonium cation is disclosed: A microporous crystalline material made from the as-synthesized material is also disclosed. A method of making microporous crystalline material using one or more organic structure directing agents is also disclosed. A method of selective catalytic reduction of nitrogen oxides in exhaust gas that comprises contacting exhaust gases, typically in the presence of ammonia, urea, an ammonia generating compound, or a hydrocarbon compound, with an article comprising the disclosed microporous crystalline is also disclosed.Type: GrantFiled: June 15, 2020Date of Patent: June 8, 2021Assignee: PQ CorporationInventors: Hong-Xin Li, Bjorn Moden, Anton Petushkov
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Patent number: 10814316Abstract: A process for the production of benzene and ethylene from an alkane-containing gas stream. The alkane-containing gas stream may be contacted, in a reaction zone of a reactor under alkane aromatization conditions, with an aromatization catalyst including any combination of fresh, spent, and regenerated catalyst to produce an outlet stream including (i) spent catalyst and (ii) a product mixture including benzene and ethylene. The spent catalyst may be regenerated in a regeneration zone under regeneration conditions to produce the regenerated catalyst. A selected amount of fresh catalyst may be added to the regeneration zone to produce the mixture of fresh catalyst and regenerated catalyst, which may be recycled to the reaction zone. A ratio of benzene to ethylene in the product mixture may be controlled by modifying the alkane aromatization conditions, the regeneration conditions, and/or the selected amount of fresh catalyst added to the regeneration zone.Type: GrantFiled: December 13, 2017Date of Patent: October 27, 2020Assignee: Shell Oil CompanyInventors: Ann Marie Lauritzen, Ye-Mon Chen, Chi Chiang Lee
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Patent number: 10487021Abstract: The present disclosure relates to catalysts supported on a modified-carrier for oxidative coupling reaction of methane and a method for oxidative coupling reaction of methane using the same. The catalysts in which sodium tungstate is supported on a delaminated zeolite carrier increase the methane conversion rate and the selectivity to C2+ hydrocarbon compounds and thereby improve the reactivity of the oxidative coupling reaction of methane.Type: GrantFiled: December 28, 2017Date of Patent: November 26, 2019Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Sangseo Gu, Jeong-Myeong Ha, Jae Wook Choi, Dong Jin Suh, Young Hyun Yoon, Jungho Jae, Jung Kyu Choi
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Patent number: 9790442Abstract: The present subject matter relates generally to methods for selectively saturating the unsaturated C2-C4. More specifically, the present subject matter relates to methods for saturating butadiene and butenes from a hydrocarbon stream before it is combined with a fresh feed and enters a reaction zone. Removing the unsaturates from the hydrocarbon stream before the hydrocarbon stream enters the reaction zone prevents the reactor internals from coking.Type: GrantFiled: December 17, 2014Date of Patent: October 17, 2017Assignee: UOP LLCInventors: Pelin Cox, Deng-Yang Jan
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Publication number: 20150099914Abstract: A process for the aromatization of a methane-containing gas stream comprising: contacting the methane-containing gas stream in a reactor with a fluidized bed comprising an aromatization catalyst and a hydrogen acceptor under methane-containing gas aromatization conditions to produce a product stream comprising aromatics and hydrogen wherein the hydrogen is, at least in part, bound by the hydrogen acceptor in the reaction zone and removed from the product and the reaction zone.Type: ApplicationFiled: April 23, 2013Publication date: April 9, 2015Inventors: Juan Mirabel Garza, Daniel Edward Gerwien, David Morris Hamilton JR., Larry Lanier Marshall, Waleed Yousef Musallam, Anand Nilekar, Peter Tanev, Lizbeth Olivia Cisneros Trevino
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Publication number: 20150073189Abstract: A process is presented for increasing the aromatics content in a reformate process stream. The process modifies existing processes to change the operation without changing the reactors or heating units. The process includes bypasses to utilize heating capacity of upstream heating units, and passes the excess capacity of the upstream heating units to downstream process streams.Type: ApplicationFiled: November 12, 2014Publication date: March 12, 2015Inventors: Clayton C. Sadler, Mark D. Moser
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Patent number: 8951929Abstract: A process for the pre-treatment of Mo/ZSM-5 and Mo/MCM-22 catalysts is provided, which process comprises heating the catalyst at 500° C. in the presence of propane. The treated catalyst, when used in the non-oxidative dehydrogenation of methane demonstrates improved benzene yield and catalyst stability as compared to catalysts pre-treated with He, methane or H2.Type: GrantFiled: January 16, 2008Date of Patent: February 10, 2015Assignees: Agency for Science, Technology and Research, Mitsui Chemicals Inc.Inventors: Yan Liu, Toru Nishimura
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CATALYST FOR CONVERSION OF HYDROCARBONS, PROCESS OF MAKING AND PROCESS OF USING THEREOF - GE ZEOLITE
Publication number: 20150018590Abstract: In an embodiment a catalyst comprises a medium or large pore zeolite having germanium incorporated into the zeolite framework. The zeolite can have a pore structure that is one dimensional, two dimensional or three dimensional. A metal selected from Group 10 can be deposited on the zeolite. In an embodiment, a process for synthesizing the zeolite comprises preparing a medium pore zeolite containing germanium in the framework of the zeolite and calcining the zeolite. In an embodiment, the catalyst can be used in a process for the conversion of hydrocarbons comprising contacting a hydrocarbon stream containing alkanes, olefins, or mixtures thereof having 2 to 12 carbon atoms per molecule with the catalyst and recovering the product.Type: ApplicationFiled: April 29, 2014Publication date: January 15, 2015Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Scott A. Stevenson, Alla K. Khanmamedova, Dustin B. Farmer, Scott F. Mitchell, Jim Vartuli -
Patent number: 8889938Abstract: The present disclosure provides methods to produce para-xylene, toluene, and other compounds from renewable sources (e.g., cellulose, hemicellulose, starch, sugar) and ethylene in the presence of a catalyst. For example, cellulose and/or hemicellulose may be converted into 2,5-dimethylfuran (DMF), which may be converted into para-xylene by cycloaddition of ethylene to DMF. Para-xylene can then be oxidized to form terephthalic acid.Type: GrantFiled: March 15, 2013Date of Patent: November 18, 2014Assignee: Micromidas, Inc.Inventors: Makoto N. Masuno, Patrick B. Smith, Dennis A. Hucul, Katherine Brune, Ryan L. Smith, John Bissell, Dimitri A. Hirsch-Weil, Edmund J. Stark
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Publication number: 20140336432Abstract: The present invention is related to the preparation of a metal lattice-doping catalyst in an amorphous molten state, and the process of catalyzing methane to make olefins, aromatics, and hydrogen using the catalyst under oxygen-free, continuous flowing conditions. Such a process has little coke deposition and realizes atom-economic conversion. Under the conditions encountered in a fixed bed reactor (i.e. reaction temperature: 750˜1200° C.; reaction pressure: atmospheric pressure; the weight hourly space velocity of feed gas: 1000˜30000 ml/g/h; and fixed bed), conversion of methane is 8-50%. The selectivity of olefins is 30˜90%. And selectivity of aromatics is 10˜70%. There is no coking. The reaction process has many advantages, including a long catalyst life (>100 hrs), high stability of redox and hydrothermal properties under high temperature, high selectivity towards target products, zero coke deposition, easy separation of products, good reproducibility, safe and reliable operation, etc.Type: ApplicationFiled: July 24, 2013Publication date: November 13, 2014Inventors: Xinhe Bao, Xiaoguang Guo, Guangzong Fang, Dehui Deng, Hao Ma, Dali Tan
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Patent number: 8871990Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of about 0.005 to about 0.1% wt platinum, an amount of an attenuating metal which is no more than about 0.02% wt less than the amount of platinum, from about 10 to about 99.9% wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.Type: GrantFiled: February 16, 2009Date of Patent: October 28, 2014Assignee: Shell Oil CompanyInventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
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Publication number: 20140309469Abstract: An integrated process for producing gasoline blending components and aromatic hydrocarbons which comprises: (a) contacting a lower alkane feed with an aromatic hydrocarbon conversion catalyst to produce an aromatic reaction product mixture which is comprised of benzene and/or toluene and/or xylene, C9 aromatic products, C10 aromatic products including naphthalene and, optionally, C11+ aromatic products, (b) separating and recovering the aromatic reaction product mixture, (c) separating and recovering benzene, (d) optionally separating recovering toluene and/or xylene, and (e) separating and recovering the C9 aromatic products and the C10 aromatic products which boil at a lower temperature than naphthalene from the naphthalene and the C10 aromatic reaction products which boil at a higher temperature than naphthalene and any C11+ aromatic products.Type: ApplicationFiled: May 30, 2014Publication date: October 16, 2014Applicant: SHELL OIL COMPANYInventors: Yajnanarayana Halmuthur JOIS, Ann Marie LAURITZEN, Ajay Madhav MADGAVKAR
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Patent number: 8859835Abstract: In a process for the regeneration of a coked metal-containing catalyst, the coked catalyst is contacted in a regeneration zone with an atmosphere which contains carbon dioxide and carbon monoxide at a temperature of at least 400° C.Type: GrantFiled: August 26, 2011Date of Patent: October 14, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Kenneth R. Clem, Larry L. Iaccino, Mobae Afeworki, Juan D. Henao, Neeraj Sangar, Xiaobo Zheng, Lorenzo C. DeCaul
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Publication number: 20140235911Abstract: The present invention relates to catalyst composition comprising lanthanum and gallium containing zeolite and lanthanum modified binder, wherein said lanthanum and gallium containing zeolite comprises about 0.01-0.1 wt-% lanthanum and wherein said lanthanum modified binder comprises about 0.5-2 wt-% lanthanum. Furthermore, the present invention relates to a method for preparing the catalyst composition of the present invention and a process for producing aromatic hydrocarbons comprising contacting a feedstream comprising lower alkanes with the catalyst composition of the present invention under conditions suitable for alkane aromatization.Type: ApplicationFiled: July 17, 2012Publication date: August 21, 2014Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventor: Subhash Chandra Laha
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Patent number: 8809608Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting one or more lower alkanes with a dehydroaromatization aromatic catalyst which is comprised of 0.005 to 0.1% wt platinum, not more than 0.2% wt of an amount of an attenuating metal wherein the amount of platinum is not more than about 0.02% wt more than the amount of the attenuating metal, from about 10 to about 99.9% wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.Type: GrantFiled: October 29, 2009Date of Patent: August 19, 2014Assignee: Shell Oil CompanyInventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
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Patent number: 8785704Abstract: The present invention relates to a process for nonoxidatively dehydroaromatizing a reactant stream comprising C1-C4-aliphatics by converting the reactant stream in the presence of a catalyst in a reaction zone 1 to a product stream P comprising aromatic hydrocarbons, and regenerating the catalyst whose activity has been reduced by deposited coke with a hydrogen-comprising mixture H in a reaction zone 2, wherein at least a portion of the deposited coke is converted to methane and at least a portion of the methane formed is fed to reaction zone 1.Type: GrantFiled: May 20, 2009Date of Patent: July 22, 2014Assignee: BASF SEInventors: Frank Kiesslich, Achim Gritsch, Christian Schneider, Albena Kostova
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Patent number: 8772563Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of about 0.005 to about 0.1 wt % platinum, an amount of gallium which is equal to or greater than the amount of the platinum, from about 10 to about 99.9 wt % of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.Type: GrantFiled: February 16, 2009Date of Patent: July 8, 2014Assignee: Shell Oil CompanyInventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
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Publication number: 20140171708Abstract: A system and process to produce an aromatic hydrocarbon via catalyzed nonoxidative dehydroaromatization (DHA). The system includes a reaction zone containing a dehydroaromatization catalyst. A reactant feed stream inlet supplies a reactant composition, such as natural gas, to the reaction zone. A heater maintains the reaction zone at a suitable dehydroaromatization temperature. A product stream exit removes the aromatic hydrocarbon produced by the nonoxidative dehydroaromatization of the reactant composition from the reaction zone. A hydrogen separation membrane is disposed between the reaction zone and a hydrogen stream exit to enable continuous and selective removal of hydrogen produced in the reaction zone. A hydrogen recycle stream diverts a portion of hydrogen from the hydrogen stream exit and adds the portion of hydrogen to the reactant composition supplied to the reaction zone. The hydrogen may also be used to regenerate the dehydroaromatization catalyst.Type: ApplicationFiled: November 26, 2013Publication date: June 19, 2014Applicant: Ceramatec, Inc.Inventors: Pallavi Chitta, Mukund Karanjkar
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Publication number: 20140163281Abstract: A catalyst for the conversion of at least one low carbon number aliphatic hydrocarbon in a feedstream to provide at least one aromatic hydrocarbon, the catalyst comprising a zeolite and a promoter metal M, the zeolite characterized by the retention of greater than 40% of the tetrahedral aluminum sites in the zeolite following calcination of the catalyst in air at 750° C. for 3 hours when compared to the amount of tetrahedral aluminum in the same catalyst after calcination in air at 500° C. for 3 hours.Type: ApplicationFiled: December 11, 2013Publication date: June 12, 2014Applicant: UOP LLCInventors: Timur V. Voskoboynikov, Christopher P. Nicholas, Mark A. Miller, Lisa M. King, Vincent G. Mezera
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Publication number: 20140163279Abstract: A process for dehydrocyclodimerization using a catalytic composite comprising at least one of a new family of aluminosilicate zeolites designated UZM-44 has been developed. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where “n” is the mole ratio of Na to (Al+E), M represents a metal or metals from zine, Group 1, Group 2, Group 3 and or the lanthanide series of the periodic table, “m” is the mole ratio of M to (Al+E), “k” is the average charge of the metal or metals M, T is the organic structure directing agent or agents, and E is a framework element such as gallium. UZM-44 has catalytic properties for carrying processes involving contacting at least one aliphatic hydrocarbon having from 2 to about 6 carbon atoms per molecule with the UZM-44 to produce at least one aromatic hydrocarbon.Type: ApplicationFiled: December 2, 2013Publication date: June 12, 2014Applicant: UOP LLCInventors: Christopher P. Nicholas, Mark A. Miller
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Publication number: 20140163282Abstract: A new family of coherently grown composites of TUN and IMF zeotypes has been synthesized and shown to be effective catalysts in processes for converting at least one aliphatic hydrocarbon having from 1 to about 4 carbon atoms in a feedstream to provide at least one aromatic hydrocarbon. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where M represents zinc or a metal or metals from Group 1, Group 2, Group 3 or the lanthanide series of the periodic table, T is the organic structure directing agent or agents and E is a framework element such as gallium. The process involves contacting a low carbon number aliphatic hydrocarbon with the coherently grown composite of TUN and IMF zeotypes to produce at least an aromatic.Type: ApplicationFiled: December 11, 2013Publication date: June 12, 2014Applicant: UOP LLCInventors: Timur V. Voskoboynikov, Christopher P. Nicholas, Mark A. Miller, Lisa M. King, Vincent G. Mezera
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Publication number: 20140163280Abstract: A new family of aluminosilicate zeolites designated UZM-44 has been synthesized. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where “n” is the mole ratio of Na to (Al+E), M represents a metal or metals from zinc, Group 1, Group 2, Group 3 and or the lanthanide series of the periodic table, “m” is the mole ratio of M to (Al+E), “k” is the average charge of the metal or metals M, T is the organic structure directing agent or agents, and E is a framework element such as gallium. UZM-44 has catalytic properties for carrying processes involving contacting at least one low carbon number aliphatic hydrocarbon having from 1 to about 4 carbon atoms per molecule with the catalytic composite comprising UZM-44 to produce at least one aromatic hydrocarbon.Type: ApplicationFiled: December 11, 2013Publication date: June 12, 2014Applicant: UOP LLCInventors: Timur V. Voskoboynikov, Lisa M. King, Vincent G. Mezera, Christopher P. Nicholas, Mark A. Miller
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Patent number: 8742189Abstract: The present invention relates to a catalyst for dehydroaromatizing C1-C4-aliphatics, said catalyst being obtainable by twice treating a zeolite from the group of MFI and MWW with NH4-containing mixtures, in each case with subsequent drying and calcination. The catalyst comprises molybdenum and, if appropriate, as further elements, Cu, Ni, Fe, Co, Mn, Cr, Nb, Ta, Zr, V, Zn and/or Ga. The present invention further provides a process for dehydroaromatizing a mixture comprising C1-C4-aliphatics by conversion in the presence of the catalyst.Type: GrantFiled: April 8, 2009Date of Patent: June 3, 2014Assignee: BASF SEInventors: Frank Kiesslich, Joana Coelho Tsou, Bilge Yilmaz, Sebastian Ahrens, Thomas Heidemann, Veronika Will, Christian Bechtold
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Patent number: 8697926Abstract: Process for obtaining aromatic hydrocarbons from a stream containing at least one light hydrocarbon selected from the list comprising methane, ethane, ethylene, propane, propene, propylene, butane, butene or butadiene, which comprises putting said stream into contact with a catalyst, which comprises a catalytic material and a binder, in a fluidized bed reactor. Said reactor may have two reaction zones, an oxidizing zone and a reducing zone.Type: GrantFiled: June 19, 2009Date of Patent: April 15, 2014Assignee: Universidad de ZaragozaInventors: Miguel Menéndez Sastre, Javier Herguido Huerta, Carlos Téllez Ariso, Jaime Soler Herrero, María Pilar Gimeno Tolosa
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Patent number: 8692043Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of 0.005 to 0.1% wt platinum, an amount of iron which is equal to or greater than the amount of the platinum, from 10 to 99.9% wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.Type: GrantFiled: February 18, 2009Date of Patent: April 8, 2014Assignee: Shell Oil CompanyInventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
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Publication number: 20140039233Abstract: A catalyst composition suitable for conversion of alkanes having 3 to 12 carbon atoms per molecule to aromatic hydrocarbons, wherein the catalyst composition comprises: MN/MA/Ga-zeolite, wherein MN stands for one or more noble metals and MA stands for one or more alkali metals and/or alkaline earth metals. The MN/MA/Ga-zeolite is a zeolite comprising: 0.01-10 wt % of MN with respect to the total MN/MA/Ga-zeolite; 0.01-10 wt % of MA with respect to the total MN/MA/Ga-zeolite; and 0.01-10 wt % Ga with respect to the total MN/MA/Ga-zeolite.Type: ApplicationFiled: July 29, 2013Publication date: February 6, 2014Applicant: Saudi Basic Industries CorporationInventors: Subhash Chandra Laha, Mohammed Rafiuddin Ansari
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Publication number: 20130324778Abstract: This invention is for a catalyst for conversion of hydrocarbons. The catalyst contains a zeolite with one element from Group 13, Group 14, or the first series transition metals and, optionally, germanium and/or aluminum in the zeolite framework. At least one Group 10 metal, such as platinum, is deposited on the zeolite. Examples of the elements in the framework are tin, boron, iron or titanium. The catalyst is prepared by synthesizing a zeolite with one element from Group 13, Group 14, or the first series transition metals and, optionally, germanium and/or aluminum in the zeolite framework; depositing the metal; and calcining after preparation of the zeolite and before or after depositing the metal. The catalyst may be used in a process for the conversion of hydrocarbons, such as propane to aromatics, by contacting the catalyst with alkanes having 2 to 12 carbon atoms per molecule and recovering the product.Type: ApplicationFiled: August 7, 2013Publication date: December 5, 2013Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Scott F. Mitchell, Alla K. Khanmamedova, Scott A. Stevenson, Jim Vartuli
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Publication number: 20130296625Abstract: Methods for preparing bound non-acidic germanium zeolite catalysts arc disclosed, where the preparation is reproducible and scalable and where the catalysts have similar or the same activity and selectivities of a standard naphtha aromatization catalyst and methods for aromatizing naphtha.Type: ApplicationFiled: May 2, 2012Publication date: November 7, 2013Inventors: Ashim K. Ghosh, Scott A. Stevenson, Neeta Kulkarni, Mike Mier, Balamurali K. Nair, Dustin Farmer
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Publication number: 20130172648Abstract: The present invention relates to catalyst composition comprising M1/Ga/zeolite and La/binder, wherein M1/Ga/zeolite is a zeolite comprising 0.01-2 wt-% palladium and/or platinum (M1) with respect to the total M1/Ga/zeolite and 0.2-2 wt-% gallium (Ga) with respect to the total M1/Ga/zeolite; and La/binder is a binder comprising 0.5-2 wt-% lanthanum (La) with respect to the total La/binder. Furthermore, the present invention relates to a method for preparing the catalyst composition of the present invention and a process for producing aromatic hydrocarbons comprising contacting a feedstream comprising lower alkanes with the catalyst composition of the present invention under conditions suitable for alkane aromatization.Type: ApplicationFiled: December 18, 2012Publication date: July 4, 2013Applicant: Saudi Basic Industries CorporationInventor: Saudi Basic Industries Corporation
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Publication number: 20130116493Abstract: A heated reaction gas comprising methane is contacted with first and second catalysts to catalyze production of an aromatic hydrocarbon. The first catalyst is more active than the second catalyst for catalyzing aromatization of methane, and the second catalyst is more active than the first catalyst for catalyzing aromatization of ethane. A reactor for producing aromatic hydrocarbons from the reaction gas may have a conduit defining a reaction zone for the reaction gas to react therein, and the first and second catalysts may be disposed in the reaction zone.Type: ApplicationFiled: September 21, 2012Publication date: May 9, 2013Applicants: Mitsui Chemicals Inc., Agency for Science, Technology and ResearchInventors: Agency for Science, Technology and Research, Mitsui Chemicals Inc.
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Publication number: 20130012747Abstract: In manufacturing aromatic hydrocarbons by causing a contact reaction between a lower hydrocarbon and a catalyst, the aromatic hydrocarbons are stably produced over a long period of time while maintaining high aromatic hydrocarbon yields. The process includes a reaction process of initiating the contact reaction between the lower hydrocarbon and the catalyst thereby obtaining the aromatic hydrocarbons and hydrogen, and a regeneration process of regenerating the catalytic activity by bringing hydrogen into contact with the catalyst used in the reaction process. The reaction process and the regeneration process are repeated thereby producing the aromatic hydrocarbons and hydrogen. In the reaction process, carbon monoxide is added to the lower hydrocarbons and additionally a reaction temperature is set at higher than 800° C.Type: ApplicationFiled: February 10, 2011Publication date: January 10, 2013Applicant: Meidensha CorporationInventors: Hongtao Ma, Yo Yamamoto, Yuji Ogawa
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Publication number: 20120253089Abstract: The present invention provides a process for producing aromatic hydrocarbons which comprises: (a) alternately contacting a lower alkane feed with an aromatization catalyst under aromatization reaction conditions in a reactor for a short period of time, preferably 30 minutes or less, to produce aromatic reaction products and then contacting the aromatization catalyst with a hydrogen-containing gas at elevated temperature for a short period of time, preferably 10 minutes or less, (b) repeating the cycle of step (a) at least one time, (c) regenerating the aromatization catalyst by contacting it with an oxygen-containing gas at elevated temperature and (d) repeating steps (a) through (c) at least one time.Type: ApplicationFiled: October 29, 2010Publication date: October 4, 2012Inventors: Mahesh Venkataraman Iyer, Ann Marie Lauritzen, Ajay Madhav Madgavkar
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Patent number: 8273931Abstract: The present invention is for a catalyst, a process for making the catalyst and a process for using the catalyst in aromatization of alkanes having three to five carbon atoms per molecule, such as propane, to aromatics, such as benzene, toluene and xylene. The catalyst is an aluminum-silicon zeolite having a silicon to aluminum atomic ratio (Si:Al) greater than 15:1, such as MFI or ZSM-5, on which germanium, aluminum and a noble metal, such as platinum, have been deposited. The catalyst may be bound with magnesia, alumina, titania, zirconia, thoria, silica, boria or mixtures thereof. The aluminum and germanium may be deposited simultaneously on the zeolite.Type: GrantFiled: January 12, 2012Date of Patent: September 25, 2012Assignee: Saudi Basic Industries CorporationInventors: Scott Stevenson, Gopalakrishnan G. Juttu, Michael Mier, Robin J. Bates, Dustin Farmer, Scott Mitchell, Alla K. Khanmamedova
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Publication number: 20120123176Abstract: A catalyst for converting methane to aromatic hydrocarbons is described herein. The catalyst comprises an active metal or a compound thereof, and an inorganic oxide support wherein the active metal is added to the support in the form of metal oxalate. The metal oxalate-derived catalyst exhibits superior performance in the conversion of methane-rich feed to aromatics products relative to catalysts prepared from non-oxalate metal precursors. A method of making the catalyst and a method of using the catalyst are also described.Type: ApplicationFiled: May 11, 2011Publication date: May 17, 2012Applicant: SHELL OIL COMPANYInventors: Peter Tanev TANEV, Armin LANGE DE OLIVEIRA
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Publication number: 20120108875Abstract: The present invention is for a catalyst, a process for making the catalyst and a process for using the catalyst in aromatization of alkanes having three to five carbon atoms per molecule, such as propane, to aromatics, such as benzene, toluene and xylene. The catalyst is an aluminum-silicon zeolite having a silicon to aluminum atomic ratio (Si:Al) greater than 15:1, such as MFI or ZSM-5, on which germanium, aluminum and a noble metal, such as platinum, have been deposited. The catalyst may be bound with magnesia, alumina, titania, zirconia, thoria, silica, boria or mixtures thereof. The aluminum and germanium may be deposited simultaneously on the zeolite.Type: ApplicationFiled: January 12, 2012Publication date: May 3, 2012Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Scott Stevenson, Gopalakrishnan G. Juttu, Michael Mier, Robin J. Bates, Dustin Farmer, Scott Mitchell, Alla K. Khanmamedova
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Patent number: 8148590Abstract: A process for producing aromatic hydrocarbons and hydrogen, in which a lower hydrocarbons-containing feedstock gas is reformed by being supplied to and being brought into contact with a catalyst under high temperature conditions thereby forming aromatic hydrocarbons and hydrogen. The method includes the steps of (a) supplying a hydrogen gas together with the feedstock gas during a supply of the feedstock gas; and (b) suspending the supply of the feedstock gas for a certain period of time while keeping a condition of a supply of the hydrogen gas. The catalyst is exemplified by a metallo-silicate carrying molybdenum and a metallo-silicate carrying molybdenum and rhodium. An amount of the hydrogen gas supplied together with the feedstock gas is set to be preferably larger than 2% and smaller than 10%, more preferably within a range of from 4 to 8%, much more preferably 8%.Type: GrantFiled: July 28, 2005Date of Patent: April 3, 2012Assignees: Meidensha CorporationInventors: Masaru Ichikawa, Ryoichi Kojima, Yuji Ogawa, Masamichi Kuramoto
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Publication number: 20110172478Abstract: [Object] To improve the yield of aromatic hydrocarbon and the stability of active life in a process for producing aromatic compound by using a lower hydrocarbon aromatization catalyst. [Solving Means] A lower hydrocarbon aromatization catalyst for producing aromatic compound under reaction of lower hydrocarbon has an average crystal diameter of not larger than 500 nm. A catalyst in which molybdenum is carried on ZSM-5 zeolite as metallosilicate is used as an example of the above-mentioned catalyst. Additionally, a process for producing aromatic compound upon contact of the above-mentioned catalyst with a reaction gas containing lower hydrocarbon is provided.Type: ApplicationFiled: June 18, 2009Publication date: July 14, 2011Inventors: Hongtao Ma, Yuji Ogawa
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Publication number: 20110160507Abstract: Process for obtaining aromatic hydrocarbons from a stream containing at least one light hydrocarbon selected from the list comprising methane, ethane, ethylene, propane, propene, propylene, butane, butene or butadiene, which comprises putting said stream into contact with a catalyst, which comprises a catalytic material and a binder, in a fluidized bed reactor. Said reactor may have two reaction zones, an oxidizing zone and a reducing zone.Type: ApplicationFiled: June 19, 2009Publication date: June 30, 2011Applicant: UNIVERSIDAD DE ZARAGOZAInventors: Miguel Menéndez Sastre, Javier Herguido Huerta, Carlos Téllez Ariso, Jaime Soler Herrero, Maria Pilar Gimeno Tolosa
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Publication number: 20110130606Abstract: The present invention relates to a process for nonoxidatively dehydroaromatizing a reactant stream comprising C1-C4-aliphatics by converting the reactant stream in the presence of a catalyst in a reaction zone 1 to a product stream P comprising aromatic hydrocarbons, and regenerating the catalyst whose activity has been reduced by deposited coke with a hydrogen-comprising mixture H in a reaction zone 2, wherein at least a portion of the deposited coke is converted to methane and at least a portion of the methane formed is fed to reaction zone 1.Type: ApplicationFiled: May 20, 2009Publication date: June 2, 2011Applicant: BASF SEInventors: Frank Kiesslich, Achim Gritsch, Christian Schneider, Albena Kostova
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Publication number: 20110124933Abstract: The present invention relates to a catalyst for dehydroaromatizing C1-C4-aliphatics, said catalyst being obtainable by twice treating a zeolite from the group of MFI and MWW with NH4-containing mixtures, in each case with subsequent drying and calcination. The catalyst comprises molybdenum and, if appropriate, as further elements, Cu, Ni, Fe, Co, Mn, Cr, Nb, Ta, Zr, V, Zn and/or Ga. The present invention further provides a process for dehydroaromatizing a mixture comprising C1-C4-aliphatics by conversion in the presence of the catalyst.Type: ApplicationFiled: April 8, 2009Publication date: May 26, 2011Applicant: BASF SEInventors: Frank Kiesslich, Joana Coelho Tsou, Bilge Yilmaz, Sebastian Ahrens, Thomas Heidemann, Veronika Will, Christian Bechtold
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Patent number: 7906696Abstract: This invention is for a catalyst for conversion of a hydrocarbonaceous feed. The catalyst is a zeolite aluminosilicate with a silicon to aluminum molar ratio from about 70:1 to about 100:1 on which a noble metal has been deposited. The zeolite catalyst may contain other optional tetravalent and trivalent elements in the zeolite framework. The zeolite structure may be MFI, FAU, TON, MFL, VPI, MEL, AEL, AFI, MWW or MOR. The catalyst is synthesized by preparing a zeolite containing aluminum, silicon and, optionally, other elements, such as germanium, in the framework, depositing a noble metal, such as platinum, on the zeolite and calcining the zeolite. The catalyst may be used for aromatization of alkanes to aromatics. One embodiment is a MFI zeolite catalyst which may be used for the aromatization of alkanes having two to six carbon atoms per molecule to aromatics, such as benzene, toluene and xylenes.Type: GrantFiled: January 22, 2007Date of Patent: March 15, 2011Assignee: Saudi Basic Industries CorporationInventors: Gopalakrishnan G. Juttu, Robert Scott Smith
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Publication number: 20110054232Abstract: A catalyst for the conversion of methane to higher hydrocarbons including aromatic hydrocarbons comprises molybdenum or a compound thereof dispersed on an aluminosilicate zeolite, wherein the amount of aluminum present as aluminum molybdate in the catalyst is less than 2700 ppm by weight.Type: ApplicationFiled: February 5, 2009Publication date: March 3, 2011Inventors: Neeraj Sangar, Teng Xu, Larry L. Iaccino, Mobae Afeworki
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Patent number: 7888543Abstract: A process for converting methane to higher hydrocarbon(s) including aromatic hydrocarbon(s) comprises providing a hydrocarbon feedstock containing methane and a catalytic particulate material to a reactor system having at least first and second reaction zones connected in series. Each of the reaction zones is operated under reaction conditions sufficient to convert at least a portion of the methane to said higher hydrocarbon(s) and is maintained in a moving bed fashion, with the bulk of the catalytic particulate material being moved from the first reaction zone to the second reaction zone and with the bulk of the hydrocarbon feedstock being moved from the second reaction zone to the first reaction zone.Type: GrantFiled: December 18, 2009Date of Patent: February 15, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Elizabeth L. Stavens, Neeraj Sangar
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Publication number: 20110021853Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of 0.005 to 0.1% wt platinum, an amount of iron which is equal to or greater than the amount of the platinum, from 10 to 99.9% wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.Type: ApplicationFiled: February 18, 2009Publication date: January 27, 2011Inventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
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Publication number: 20100312029Abstract: A method for dehydroaromatizing methane by contacting a feedstream that contains methane, in a circulating fluid bed reactor/regenerator, with a catalyst and under conditions sufficient to dehydroaromatize methane and produce at least one liquid aromatic compound such as benzene, toluene or naphthalene and hydrogenated products such as cyclohexane and decahydronaphthalene. The method may also be used to produce hydrogen. The feedstream may be a natural gas feedstock. The method may include one step and two step catalyst regeneration.Type: ApplicationFiled: November 17, 2008Publication date: December 9, 2010Applicant: Dow Global Technologies Inc.Inventors: Robert J. Gulotty, JR., Joseph E. Pelati, Arthur R. Prunier, JR., Albert E. Schweizer, JR.
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Publication number: 20100285948Abstract: A process for the pre-treatment of Mo/ZSM-5 and Mo/MCM-22 catalysts is provided, which process comprises heating the catalyst at 500° C. in the presence of propane. The treated catalyst, when used in the non-oxidative dehydrogenation of methane demonstrates improved benzene yield and catalyst stability as compared to catalysts pre-treated with He, methane or H2.Type: ApplicationFiled: January 16, 2008Publication date: November 11, 2010Applicants: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, MITSUI CHEMICALS INC.Inventors: Yan Liu, Toru Nishimura
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Publication number: 20100048969Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting one or more lower alkanes with a dehydroaromatization aromatic catalyst which is comprised of 0.005 to 0.1% wt platinum, not more than 0.2% wt of an amount of an attenuating metal wherein the amount of platinum is not more than about 0.02% wt more than the amount of the attenuating metal, from about 10 to about 99.9% wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.Type: ApplicationFiled: October 29, 2009Publication date: February 25, 2010Inventors: Ann Marie LAURITZEN, Ajay Madhav Madgavkar
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Patent number: 7659437Abstract: A process for converting methane to higher hydrocarbon(s) including aromatic hydrocarbon(s) comprises providing a hydrocarbon feedstock containing methane and a catalytic particulate material to a reactor system having at least first and second reaction zones connected in series. Each of the reaction zones is operated under reaction conditions sufficient to convert at least a portion of the methane to said higher hydrocarbon(s) and is maintained in a moving bed fashion, with the bulk of the catalytic particulate material being moved from the first reaction zone to the second reaction zone and with the bulk of the hydrocarbon feedstock being moved from the second reaction zone to the first reaction zone.Type: GrantFiled: March 29, 2007Date of Patent: February 9, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Elizabeth L. Stavens, Neeraj Sangar
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Publication number: 20090209795Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of about 0.005 to about 0.1 % wt platinum, an amount of an attenuating metal which is no more than about 0.02 % wt less than the amount of platinum, from about 10 to about 99.9 % wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.Type: ApplicationFiled: February 16, 2009Publication date: August 20, 2009Inventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar