Group Viii Metal Containing Catalyst Utilized Patents (Class 562/534)
  • Patent number: 10851040
    Abstract: A method for producing at least one oxidation product selected from the group consisting of acrolein and acrylic acid is provided. This method can alleviate concerns about deterioration of a gas-phase oxidation catalyst and reaction runaway in a restart period after a shutdown, and can allow the reaction to proceed in a stable state. Using a fixed-bed reactor filled with a gas-phase oxidation catalyst, at least one source gas selected from the group consisting of propylene and acrolein is subjected to a gas-phase contact oxidation reaction while a heating medium is caused to contact with or circulate through the fixed-bed reactor and thereby to heat the fixed-bed reactor. The temperature of the heating medium when the load is maximum in the restart period after the shutdown is controlled to be lower than the temperature of the heating medium when the load is maximum in an initial start-up period.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: December 1, 2020
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki Kawamura, Tomoaki Kobayashi, Tatsuhiko Kurakami, Hideo Yoshida
  • Patent number: 10569260
    Abstract: The present invention relates to a method for preparing a catalyst and a method for preparing unsaturated carboxylic acid using the catalyst prepared according to the preparation method. According to the method for preparing a catalyst, unsaturated carboxylic acid can be provided from an unsaturated aldehyde with a high conversion rate and selectivity.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: February 25, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Byung Yul Choi, Young Hyun Choe, Duk Ki Kim, Hyun Jong Shin, Ju Yeon Park, Hyun Sub Lim, Hyo Sang You
  • Patent number: 9493386
    Abstract: A method for supplying reaction gases in which at least a material to be oxidized and a gas containing molecular oxygen are mixed and the resultant mixture is supplied to a catalytic gas-phase oxidation reactor, characterized in that, a feed rate of the material to be oxidized and a feed rate of the gas containing molecular oxygen are adjusted so that when a composition of a gas at the inlet of the catalytic gas-phase oxidation reactor is changed from a composition A point [the concentration of the material to be oxidized: R(a), and the concentration of oxygen: O(a)] represented by plotting a concentration of the material to be oxidized and a concentration of oxygen in the gas at said inlet to a composition B point [R(b) and O(b)] [the composition A point and the composition B point are compositions outside an explosion range, and R(a)?R(b) and O(a)?O(b)], compositions on the way of the change from the composition A point to the composition B point fall outside the explosion range.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: November 15, 2016
    Assignee: MITSUBISHI RAYON CO., LTD.
    Inventors: Yasuhiro Kabu, Yoshimasa Ando, Yoshiyuki Taniguchi
  • Patent number: 9434672
    Abstract: Process for preparing isononanoic acid proceeding from 2-ethylhexanol, characterized in that (a) 2-ethylhexanol is dehydrated to octene in the presence of a catalyst; (b) the octene obtained in step a) is reacted in the presence of a transition metal compound of group VIII of the periodic table of the elements with carbon monoxide and hydrogen to give isononanal; and (c) the isononanal obtained in step b) is oxidized to isononanoic acid.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: September 6, 2016
    Assignee: OXEA GMBH
    Inventors: Guido D. Frey, Matthias Eisenacher, Kristina Kockrick, Heinz Strutz
  • Patent number: 9434675
    Abstract: A Process for preparing carboxylic esters of a mixture of structurally branched C9 monocarboxylic acids proceeding from 2-ethylhexanol is characterized in that (a) 2-ethylhexanol is dehydrated to an octene mixture in the presence of a catalyst; (b) the octene mixture obtained in step a) is reacted in the presence of a transition metal compound of group VIII of the periodic table of the elements with carbon monoxide and hydrogen to give a mixture of isomeric isononanals; (c) the mixture of isomeric isononanals obtained in step b) is oxidized to a mixture of structurally branched C9 monocarboxylic acids; and (d) the mixture of structurally branched C9 monocarboxylic acids obtained in step c) is reacted with alcohols to give carboxylic esters.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: September 6, 2016
    Assignee: OXGA GMBH
    Inventors: Guido D. Frey, Matthias Eisenacher, Kristina Kockrick, Heinz Strutz
  • Publication number: 20130324758
    Abstract: The present invention relates to the selective elimination of propanal in acrolein-rich streams to produce acrolein and/or acrylic acid and/or acrylonitrile and/or methylmercaptopropionaldehyde containing low amount of propanal and/or propionic acid and/or propionitrile. One subject of the present invention is a process for manufacturing acrolein comprising a step of selective elimination of propanal in an acrolein-rich stream in contact with a catalyst comprising at least molybdenum. Another subject of the present invention is a process for manufacturing acrylic acid from glycerol including a step of selective elimination of propanal in an acrolein-rich stream in contact with a catalyst comprising at least molybdenum.
    Type: Application
    Filed: January 26, 2012
    Publication date: December 5, 2013
    Applicant: Arkema France
    Inventors: Jean-Francois Devaux, Jean-Luc Dubois
  • Patent number: 8575389
    Abstract: The invention relates to a continuous neutralization process in which at least one ethylenically unsaturated carboxylic acid is neutralized at least partly with a base and the temperature of the neutralized solution is less than 70° C., and also to an apparatus for carrying out the process.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: November 5, 2013
    Assignee: BASF SE
    Inventors: Matthias Weismantel, Michael de Marco, Dominicus van Esbroeck, Karl J. Possemiers, Ronny De Kaey
  • Patent number: 8563774
    Abstract: Disclosed is a method for producing a catalyst, in which physical properties of a dried material or a calcined material in a production process of the catalyst are stable and a change in at least one of a catalyst activity and a selectivity to a target product is small and hence reproducibility of the catalyst is excellent. The present invention is a method for producing a catalyst containing molybdenum, bismuth, and iron, which contains the steps of washing a surface of at least one device equipped in an apparatus for the production of catalyst, to which a solid matter adheres, with a basic solution, and producing the catalyst with the apparatus for the production of catalyst thus washed.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 22, 2013
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Masahide Kondo, Masanori Nitta, Hiroyuki Naitou, Toru Kuroda, Seiichi Kawato
  • Publication number: 20130274508
    Abstract: The present disclosure relates to a single shell open interstage reactor (“SSOI”). The SSOI comprises a first reaction stage, an interstage heat exchanger, an open interstage region, and a second reaction stage. The SSOI may be configured for upflow or downflow operation. Further, the open interstage region of the SSOI may comprise a supplemental oxidant feed. When the open interstage region comprises a supplemental oxidant feed, the SSOI may further comprise a supplemental oxidant mixing assembly. Processes for producing acrylic acid through the oxidation of propylene are also disclosed.
    Type: Application
    Filed: October 16, 2012
    Publication date: October 17, 2013
    Applicant: Arkema Inc.
    Inventors: Michael S. DeCourcy, John L. Steinbach, Nicolas Dupont, Roger L. Roundy
  • Publication number: 20130261335
    Abstract: An object of the present invention is to provide a process for producing methacrylic acid with good productivity over a long period of time.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 3, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Noriaki SUYASU, Eiichi SHIRAISHI
  • Publication number: 20130172599
    Abstract: A silica-based material comprising: silicon; aluminum; at least one fourth period element selected from the group consisting of iron, cobalt, nickel and zinc; and at least one basic element selected from the group consisting of alkali metal elements, alkali earth metal elements and rare earth elements, wherein the silica-based material comprises 42 to 90 mol % of the silicon, 3 to 38 mol % of the aluminum, 0.5 to 20 mol % of the fourth period element and 2 to 38 mol % of the basic element, based on a total mole of the silicon, the aluminum, the fourth period element and the basic element.
    Type: Application
    Filed: September 16, 2010
    Publication date: July 4, 2013
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Ken Suzuki, Tatsuo Yamaguchi, Chihiro Iitsuka
  • Patent number: 8242306
    Abstract: The invention provides a process which enables, in preparation of acrolein by catalytic gas-phase oxidation of propylene in the presence of molecular oxygen or a molecular oxygen-containing gas or in preparation of acrylic acid by catalytic gas-phase oxidation of acrolein in the presence of molecular oxygen or a molecular oxygen-containing gas, using single kind of catalyst, to suppress occurrence of localized extraordinarily high temperature spots (hot spots) in the catalyst layer and can stably maintain high acrolein or acrylic acid yield for a long time. The process is characterized by use of an oxide catalyst containing molybdenum as an essential component and having relative standard deviation of its particle size in a range of 0.02 to 0.20.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: August 14, 2012
    Assignee: Nippon Shokubai Co., Ltd.
    Inventor: Naohiro Fukumoto
  • Patent number: 8178719
    Abstract: There is provided a novel process for producing acrylic acid by which acrylic acid can be obtained from a raw material independent of petroleum. The process for producing acrylic acid according to the present invention comprises the steps of: applying a dehydration reaction to glycerol as a raw material in a gas phase; and then applying a gas phase oxidation reaction to a gaseous reaction product formed by the dehydration reaction.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: May 15, 2012
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Masahide Shima, Tsukasa Takahashi
  • Patent number: 8088947
    Abstract: The present invention relates to a method for producing methacrolein and/or methacrylic acid characterized in that the catalyst filling length of a dehydration catalyst layer is 3 to 20% of the catalyst filling length of an oxidation catalyst layer in a method where raw material gas containing gaseous t-butanol is supplied to a fixed-bed multitubular reactor having a dehydration catalyst layer and an oxidation catalyst layer in this order, from the entrance for raw material gas toward the exit, to produce methacrolein and/or methacrylic acid by dehydration reaction and catalytic gas phase oxidation reaction, and the present invention can increase the conventional yield of approximately 80% to 81 to 82% even when a reaction bath temperature is relatively low (approximately 355° C.).
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: January 3, 2012
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tatsuhiko Kurakami, Toshitake Kojima, Yoshimasa Seo
  • Patent number: 8088946
    Abstract: The present invention provides: a palladium-containing supported catalyst which is used for producing an ?,?-unsaturated carboxylic acid from an olefin or an ?,?-unsaturated aldehyde in high selectivity; a method for manufacturing the catalyst; and a method for producing an ?,?-unsaturated carboxylic acid in high selectivity. In particular, the present invention resides in a method for manufacturing a palladium-containing supported catalyst for producing an ?,?-unsaturated carboxylic acid from an olefin or an ?,?-unsaturated aldehyde, comprising the step of reducing palladium oxide contained in a catalyst precursor wherein at least the palladium oxide is supported on a carrier. By using such a palladium-containing supported catalyst, an ?,?-unsaturated carboxylic acid is produced through liquid-phase oxidation of an olefin or an ?,?-unsaturated aldehyde with molecular oxygen.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: January 3, 2012
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Yoshiyuki Himeno, Wataru Ninomiya, Ken Ooyachi
  • Publication number: 20110178331
    Abstract: The invention provides a process which enables, in preparation of acrolein by catalytic gas-phase oxidation of propylene in the presence of molecular oxygen or a molecular oxygen-containing gas or in preparation of acrylic acid by catalytic gas-phase oxidation of acrolein in the presence of molecular oxygen or a molecular oxygen-containing gas, using single kind of catalyst, to suppress occurrence of localized extraordinarily high temperature spots (hot spots) in the catalyst layer and can stably maintain high acrolein or acrylic acid yield for a long time. The process is characterized by use of an oxide catalyst containing molybdenum as an essential component and having relative standard deviation of its particle size in a range of 0.02 to 0.20.
    Type: Application
    Filed: April 1, 2011
    Publication date: July 21, 2011
    Inventor: Naohiro Fukumoto
  • Publication number: 20110028760
    Abstract: The subject of the present invention is a method for the reactive vaporization of aqueous solutions of glycerol in a fluidized bed containing a reactive solid. The method of the invention makes it possible to simultaneously vaporize an aqueous solution of glycerol, to remove the impurities that are present in this solution or that are generated during the evaporation, and to carry out the dehydration reaction of the glycerol to acrolein and/or the oxydehydration reaction of the glycerol to acrylic acid.
    Type: Application
    Filed: September 5, 2008
    Publication date: February 3, 2011
    Applicant: ARKEMA FRANCE
    Inventors: Jean-Luc Dubois, Grégory Patience
  • Publication number: 20100298601
    Abstract: The present invention relates to a catalyst system, an oxidation reactor comprising the same, and a method for producing an acrolein and an acrylic acid by using the same. By using the catalyst system according to the present invention, when acrolein and acrylic acid are produced, since heat accumulation in a catalyst layer may be effectively prevented, catalyst deterioration may be prevented, and the catalyst may be stably used for a long period of time. In addition, an acrolein and an acrylic acid may be produced at high selectivity and high yield.
    Type: Application
    Filed: January 16, 2009
    Publication date: November 25, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Byung-Yul Choi, Hyun-Jong Shin, Young-Hyun Choe, Young-Jin Cho, Duk-Ki Kim, Ju-Yeon Park
  • Patent number: 7799945
    Abstract: A catalytic process for preparing aliphatic straight-chain and ?-alkyl-branched carboxylic acids of 5 to 13 carbon atoms by catalytic oxidation of the corresponding aldehydes by means of oxygen or oxygen-containing gas mixtures in the liquid phase in the presence of a catalyst system contains alkali metal carboxylates or alkaline earth metal carboxylates or a mixture thereof in an amount, calculated as alkali metal or alkaline earth metal, of 0.5 mmol to 15 mmol per mol of aldehyde used and also metals of groups 4 to 12 of the Periodic Table of the Elements, cerium or lanthanum in amounts of not more than 5 ppm, based on the aldehyde used, or compounds of such metals, with the catalyst system being the reaction product from an aldehyde oxidation reaction.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: September 21, 2010
    Assignee: Oxea Deutschland GmbH
    Inventor: Helmut Springer
  • Patent number: 7667073
    Abstract: A process for making acrylic acid from acrolein; a process for making methacrylic acid from methacrolein; and a process for making acrylic acid from propane.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: February 23, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Hartmut Hibst, Wolfgang Juergen Popel, Jochen Petzoldt, Klaus Joachim Mueller-Engel
  • Patent number: 7635786
    Abstract: Disclosed are a Mo—Bi—Nb—Te based composite metal oxide; and a process for producing (meth)acrylic acid from at least one reaction material selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, wherein the Mo—Bi—Nb—Te based composite metal oxide is used as a catalyst. Also, disclosed is a process for producing (meth)acrylic acid comprising a first step of producing (meth)acrolein as a main product from at least one reaction material selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, and a second step of producing (meth)acrylic acid from the (meth)acrolein, wherein yield of (meth)acrylic acid in the product of the first step is 20 mole % or higher.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: December 22, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Hyun Jong Shin, Byung Yul Choi, Yeon Shick Yoo, Young Hyun Choe, Young Jin Cho, Duk Ki Kim, Kwang Ho Park, Joo Yeon Park
  • Patent number: 7612230
    Abstract: There is provided a novel process for producing acrylic acid by which acrylic acid can be obtained from a raw material independent of petroleum. The process for producing acrylic acid according to the present invention comprises the steps of: applying a dehydration reaction to glycerol as a raw material in a gas phase; and then applying a gas phase oxidation reaction to a gaseous reaction product formed by the dehydration reaction.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: November 3, 2009
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Masahide Shima, Tsukasa Takahashi
  • Publication number: 20090234159
    Abstract: A process for making acrylic acid from acrolein; a process for making methacrylic acid from methacrolein; and a process for making acrylic acid from propane.
    Type: Application
    Filed: March 10, 2009
    Publication date: September 17, 2009
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin DIETERLE, Hartmut Hibst, Wolfgang Juergen Popel, Jochen Petzoldt, Klaus Joachim Muller-Engel
  • Patent number: 7579297
    Abstract: A method for producing a catalyst containing at least molybdenum, bismuth and iron including the steps of kneading particles containing catalyst components, an organic binder and a liquid, where the organic binder contains at least a high-viscosity organic binder having a viscosity of from 5,000 mPa·s to 25,000 mPa·s and a low-viscosity organic binder having a viscosity of from 10 mPa·s to less than 5,000 mPa·s, and extrusion molding the resultant kneaded mixture is provided.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: August 25, 2009
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Masahide Kondo, Hiroyuki Naitou, Toru Kuroda
  • Patent number: 7563927
    Abstract: A producing method of (meth)acrolein or (meth)acrylic acid where by use of a multi-tubular reactor that has a plurality of reaction tubes filled with a catalyst, catalytic gas phase oxidation of propylene, propane, isobutylene or (meth)acrolein is carried out in the presence of a composite oxide catalyst by use of molecular oxygen or a gas containing molecular oxygen, in which method (meth)acrolein or (meth)acrylic acid can be obtained stably in high yield for a long period of time without allowing the activity of the catalyst to decrease locally (disproportionately) and extremely. A temperature difference between a temperature of a heat medium at the beginning of operation and a peak temperature of the catalyst is set in a range of 20 to 80° C., and during operations a change of the peak temperature T of the catalyst in a tube axis direction is maintained in a definite range.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: July 21, 2009
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yasushi Ogawa, Shuhei Yada, Yoshiro Suzuki, Kenji Takasaki, Kimikatsu Jinno
  • Publication number: 20090171117
    Abstract: A catalyst suitable for the gas-phase oxidation of organic compounds to ?,?-unsaturated aldehydes and/or carboxylic acids and having an active phase comprising a multimetal oxide material is prepared by a process in which a particulate catalyst precursor which contains oxides and/or compounds of the elements other than oxygen which constitute the multimetal oxide material, which compounds can be converted into oxides, is prepared and said catalyst precursor is converted by calcination into a catalytically active form, wherein a stream of the particulate catalyst precursor is passed at substantially constant speed through at least one calcination zone at constant temperature for calcination.
    Type: Application
    Filed: March 2, 2009
    Publication date: July 2, 2009
    Applicant: BASF Aktiengesellschaft
    Inventors: Heiko Arnold, Signe Unverricht, Raimund Felder, Klaus Harth, Klaus Joachim Muller-Engel
  • Publication number: 20080242815
    Abstract: The invention provides a process which enables, in preparation of acrolein by catalytic gas-phase oxidation of propylene in the presence of molecular oxygen or a molecular oxygen-containing gas or in preparation of acrylic acid by catalytic gas-phase oxidation of acrolein in the presence of molecular oxygen or a molecular oxygen-containing gas, using single kind of atalyst, to suppress occurrence of localized extraordinarily high temperature spots (hot spots) in the catalyst layer and can stably maintain high acrolein or acrylic acid yield for a long time. The process is characterized by use of an oxide catalyst containing molybdenum as an essential component and having relative standard deviation of its particle size in a range of 0.02 to 0.20.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Inventor: Naohiro Fukumoto
  • Patent number: 7429678
    Abstract: There are disclosed a catalyst and a process for production of acrylic acid using this catalyst, wherein, even under conditions where hot spots are formed, the catalyst is excellent in activity, selectivity, and catalyst life time and displays stable performances for a long time.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: September 30, 2008
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Michio Tanimoto, Harunori Hirao
  • Publication number: 20080177105
    Abstract: A process for preparing shaped catalyst bodies whose active composition is a multielement oxide, in which a finely divided precursor mixture with addition of graphite having a specific particle size is shaped to the desired geometry and then treated thermally.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 24, 2008
    Applicant: BASF SE
    Inventors: Andreas Raichle, Frank Rosowski, Sabine Huber, Ulrich Cremer, Stefan Altwasser, Klaus Joachim Mueller-Engel
  • Patent number: 7304179
    Abstract: The present invention provides a method for producing methacrylic acid through gas-phase catalytic oxidation of methacrolein or a methacrolein-containing gas with molecular oxygen or a gas containing molecular oxygen by the use of a fixed-bed multitubular reactor comprising a plurality of reaction tubes each having a catalyst layer therein, wherein the above catalyst layer is divided in the direction of the tube axis of a reaction tube into two or more layers, to thereby provide a plurality of reaction zones, and the catalyst is caused to be present in the catalyst layer in such a way that a reaction load ratio CRc(i) per unit mass of the catalyst in each reaction zone becomes 0.8 to 1.0.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: December 4, 2007
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Tomomichi Hino, Akira Ogawa
  • Patent number: 7217836
    Abstract: A method for producing (meth)acrolein and/or (meth)acrylic acid by subjecting isobutylene and the like or propylene to a vapor-phase catalytic oxidation with molecular oxygen in the presence of a solid oxidation catalyst in a tubular type of fixed bed reactor, wherein a temperature of a hot-spot zone is sufficiently controlled and (meth)acrolein and (meth)acrylic acid are produced with a high yield. A method for producing (meth)acrolein and/or (meth)acrylic acid by passing a raw material gas comprising isobutylene and the like or propylene and oxygen through a catalyst layer in a tubular type of fixed bed reactor which is filled with a solid oxidation catalyst, which includes passing a gas containing isobutylene and the like or propylene in a concentration lower than that of the raw material gas, and oxygen through the catalyst layer for a period of one hour or more prior to passing the raw material gas through the catalyst layer.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: May 15, 2007
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Seigo Watanabe, Motomu Oh-Kita, Toshihiro Sato
  • Patent number: 7211691
    Abstract: In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, the starting reaction gas mixture is oxidized over a fixed catalyst bed which consists of at least two fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the transition from temperature zone A to temperature zone B does not spatially coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: May 1, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Jochen Petzoldt, Martin Dieterle, Heiko Arnold, Wilhelm Ruppel, Klaus-Joachim Mueller-Engel
  • Patent number: 7176335
    Abstract: A process prepares methacrolein from isobutane by subjecting isobutane to a partial catalytic dehydrogenation in the gas phase and using the isobutenic product gas mixture to charge an oxidation zone in which the isobutene is oxidized to methacrolein in the gas phase with heterogeneous catalysis using molecular oxygen accompanied by molecular nitrogen as the oxygen source.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: February 13, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Silke Berndt, Klaus Joachim Mueller-Engel, Goetz-Peter Schindler, Frank Rosowski, Jochen Petzoldt
  • Patent number: 6878847
    Abstract: A catalyst useful for catalytic vapor-phase oxidation of isobutylene, t-butanol or propylene to produce respectively corresponding unsaturated aldehyde and unsaturated carboxylic acid is provided. The catalyst consists of ring-formed shaped bodies composed of (i) a catalyst composition containing at least molybdenum and bismuth as the active ingredients and (ii) inorganic fibers. The catalyst excels in mechanical strength, can give the object products at high yield and shows little activity degradation with time.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: April 12, 2005
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Hiroto Kasuga, Eiichi Shiraishi
  • Patent number: 6864391
    Abstract: A process for preparing hydroformylation products of propylene and for preparing acrylic acid and/or acrolein comprises a) feeding a propylene-containing feed in which from 2 to 40% by weight of propane is present and also carbon monoxide and hydrogen into a reaction zone and reacting this mixture in the presence of a hydroformylation catalyst to form hydroformylation products of propane, b) separating a stream consisting essentially of unreacted propylene and propane from the output from the reaction zone, and c) subjecting the stream consisting essentially of propylene and propane to a catalytic gas-phase oxidation in the presence of molecular oxygen to form acrylic acid and/or acrolein.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: March 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Roland Krokoszinski, Ulrich Hammon, Kevin Todd
  • Patent number: 6800783
    Abstract: The invention relates to a method for the synthesis of aliphatic carboxylic acids by the catalytic oxidation of aldehydes with oxygen, or oxygen-containing gas mixtures. Metals of groups 5 11 of the periodic table of elements, or the compounds thereof are used as catalyst, in amounts of up to 5 ppm, based upon the amount of aldehyde used.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: October 5, 2004
    Assignee: Celanese Chemicals Europe GmbH
    Inventors: Helmut Springer, Peter Lappe
  • Publication number: 20040192964
    Abstract: In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, the starting reaction gas mixture is oxidized over a fixed catalyst bed which consists of at least two fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the transition from temperature zone A to temperature zone B does not spatially coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.
    Type: Application
    Filed: February 24, 2004
    Publication date: September 30, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Jochen Petzoldt, Martin Dieterle, Heiko Arnold, Wilhelm Ruppel, Klaus Joachim Muller-Engel
  • Publication number: 20040192965
    Abstract: In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid, the propene-containing starting reaction gas mixture is oxidized in a first reaction stage using a fixed catalyst bed 1 which consists of a plurality of fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the acrolein-containing product gas mixture of the first reaction stage is then oxidized in a second reaction stage using a fixed catalyst bed 2 which consists of a plurality of fixed catalyst bed zones and is accommodated in two successive temperature zones C, D, and the transition from one temperature zone to another temperature zone within one reaction stage does not spatially coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 30, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Jochen Petzoldt, Martin Dieterle, Heiko Arnold, Wilhelm Ruppel, Klaus Joachim Mueller-Engel
  • Patent number: 6797839
    Abstract: Multimetal oxide materials containing molybdenum, vanadium, antimony, one or more of the elements W, Nb, Ta, Cr and Ce and nickel and, if required, one or more of the elements Cu, Zn, Co, Fe, Cd, Mn, Mg, Ca, Sr and Ba and having a 2-component structure are used for the gas-phase catalytic oxidative preparation of acrylic acid.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: September 28, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Hartmut Hibst, Signe Unverricht
  • Patent number: 6794539
    Abstract: In a process for preparing a multiplephase multimetal oxide composition comprising Mo, V, Cu and, if desired, further elements, at least one phase is preformed separately and dispersed in a plastically deformable precursor composition of a further phase. The mixture is dried and calcined. The multimetal oxide composition is suitable as active composition of catalysts for the catalytically oxidation of organic compounds in the gas phase, in particular for the oxidation of acrolein to acrylic acid.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: September 21, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Signe Unverricht, Raimund Felder, Heiko Arnold, Jochen Petzoldt
  • Patent number: 6781013
    Abstract: A process is provided which can effectively inhibit occurrence of hot spots in reaction zones or heat accumulation at the hot spots, in the occasion of producing acrolein and acrylic acid through vapor phase oxidation of propylene in the presence of a catalyst using a fixed bed shell-and-tube reactor, said catalyst having a composition represented by a general formula (1): MoaWbBicFedAeBfCgDhEiOx (wherein A is at least an element selected from Co and Ni; B is at least an element selected from P, Te, As, B, Sb, Sn, Ce, Nb, Pb, Cr, Mn and Zn; C is alkali metal element; D is alkaline earth metal element; E is at least an element selected from Si, Al, Ti and Zr; and O is oxygen; a, b, c, d, e, f, g, h, i and x denote the atomic numbers of Mo, W, Bi, Fe, A, B, C, D, E and O, respectively, and where a is 12, b is 0-5, c is 0.1-10, d is 0.1-10, e is 1-20, fis 0-5, g is 0.001-3, h is 0-3, i is 0-30, and x is a numerical value which is determined depending on the extent of oxidation of each of the elements).
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: August 24, 2004
    Assignee: Nippon Shokubai Co., Ltd.
    Inventor: Michio Tanimoto
  • Patent number: 6777571
    Abstract: A catalyst comprising a mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: August 17, 2004
    Assignee: Rohm and Haas Company
    Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Ruozhi Song, Elsie Mae Vickery
  • Patent number: 6657079
    Abstract: A method for mixing a plurality of gases including forming a helical flow within a mixing vessel thereby allowing simplification of construction, avoiding pressure drop to the fullest possible extent, and expediting the mixture lest the volume of a gas within the explosion limits should increase, and an apparatus to be used for the method.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: December 2, 2003
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Tetsuji Mitsumoto, Tatsuaki Yoshimura, Takeshi Nishimura, Sei Nakahara
  • Patent number: 6657080
    Abstract: The invention provides a process which, in producing acrylic acid through vapor-phase catalytic oxidation of acrolein-containing gas using a shell-and-tube type fixed bed reactor, can effectively inhibit occurrence of hot spots and produce acrylic acid at high yields. Said process is characterized by dividing each of the reaction tubes into at least three reaction zones in its axial direction, filling the first reaction zone closest to the gas inlet with a catalyst having a higher activity than that of the catalyst filling the adjacent, second reaction zone and filling the subsequent reaction zones with catalysts of different activity levels such that the catalytic activity successively rises from the second reaction zone toward the gas outlet side.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: December 2, 2003
    Assignee: Nippon Shokukai Co. Ltd
    Inventor: Hiromi Yunoki
  • Patent number: 6624326
    Abstract: A novel method for preparing a heteropolyacid catalyst containing a heteropolyacid composed of molybdophosphoric acid and/or molybdovanadophosphoric acid, or a salt of the heteropolyacid, is provided. The method comprises preparing an aqueous solution or aqueous dispersion which (1) contains the nitrogen-containing heterocyclic compound, nitrate anions and ammonium ions, (2) the ammonium ion content not exceeding 1.7 mols per mol of the nitrate anion content, and (3) the ammonium ion content not exceeding 10 mols per 12 mols of the molybdenum atom content by mixing raw materials containing the catalyst-constituting elements with the nitrogen-containing heterocyclic compound in the presence of water, drying and calcining the same. This heteropolyacid catalyst excels over conventional catalysts in performance, life and strength.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: September 23, 2003
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Hiroto Kasuga, Kaori Nakatani, Eiichi Shiraishi
  • Publication number: 20030094381
    Abstract: The application of an electric current to catalysts useful for the vapor phase oxidation of hydrocarbons allows for processes for obtaining enhanced catalytic processing of a given feed material with a given catalyst, processes allowing the ready change-over from one product of a given feed stream to another product of that feed stream without the need to change catalyst, and processes allowing the ready change over from one feed stream to another feed stream with the concomitant change over from one product to another product without the need to change catalyst.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 22, 2003
    Inventors: Daniel Arthur Bors, Anne Mae Gaffney, Stephen Gerard Maroldo
  • Publication number: 20030078453
    Abstract: The invention relates to a method for the synthesis of aliphatic carboxylic acids by the catalytic oxidation of aldehydes with oxygen, or oxygen-containing gas mixtures. Metals of groups 5 11 of the periodic table of elements, or the compounds thereof are used as catalyst, in amounts of up to 5 ppm, based upon the amount of aldehyde used.
    Type: Application
    Filed: September 5, 2002
    Publication date: April 24, 2003
    Inventors: Helmut Springer, Peter Lappe
  • Patent number: 6545177
    Abstract: A catalyst which is a complex oxide catalyst represented by the following general formula (1): MoaVbWcCudAeBfCgDhEiOx  (1) (in which Mo is molybdenum; V is vanadium, W is tungsten, Cu is copper, A is at least an element selected from antimony, niobium and tin; B is at least an element selected from alkaline earth metals; C is at least an element selected from silicon, aluminum, titanium and zirconium; D is at least an element selected from phosphorus, tellurium, cerium, lead, arsenic and zinc; E is at least an element selected from Group IA and Group IIIb elements of the periodic table, boron, iron, bismuth, cobalt, nickel and manganese; and O is oxygen; a, b, c, d, e, f, g, h, i and x denote the atomic ratios of Mo, V, W, Cu, A, B, C, D, E and O, respectively; and where a=12, 2≦b≦15, 0≦c≦10, 0<d≦6, 0≦e≦6, 0<f≦10, 0<g≦10, 0≦h≦5, 0≦i≦5, and x is a numerical value determined by the extents of oxidation of the other elements) which is character
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: April 8, 2003
    Assignee: Nippon Shokubai Co. Ltd.
    Inventors: Michio Tanimoto, Daisuke Nakamura, Hiromi Yunoki
  • Patent number: 6498270
    Abstract: The present invention provides a process for preparing a catalyst and the same for use in production of methacrylic acid, which is characterized by molding a raw material including a powder containing phosphorus and molybdenum at the specific pressure. The invention also provides a process for preparing methacrylic acid by gas phase oxidation and/or oxidative dehydrogenation of at least one compound selected from the group consisting of methacrolein, isobutyraldehyde and isobutyric acid in the presence of the catalyst.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: December 24, 2002
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yuichi Kase, Naomasa Kimura, Hideo Onodera
  • Patent number: 6476259
    Abstract: Improved catalyst for use in production of methacrylic acid by vapor phase oxidation reaction and/or vapor phase oxidative dehydrogenation reaction of at least one compound selected from methacrolein, isobutylaldehyde and isobutyric acid is provided. This improved catalyst is a composition composed of (A) complex oxide containing as essential components molybdenum and phosphorus, which is per se known as a catalyst for the above reaction(s), and (B) complex oxide containing as essential components cerium and zirconium. When this improved catalyst is used, the operation for producing methacrylic acid can be stably continued over prolonged period.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: November 5, 2002
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yuichi Kase, Hideo Onodera