Group Iii Metal Or Oxide Patents (Class 208/122)
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Publication number: 20030089640Abstract: A fluid catalytic cracking catalyst made from microspheres that initially contain kaolin, a dispersible boehmite alumina and a sodium silicate or silica sol binder. The kaolin portion contains hydrous kaolin and optionally kaolin which has been calcined through its characteristic exotherm. Calcination of the hydrous clay to metakaolin and formation of in-situ zeolite by treatment with sodium silicate yields a catalyst containing Y-faujasite and transforms the dispersible boehmite into a transitional alumina which contains a gamma alumina phase. The transitional alumina may contain a delta alumina phase as well. The catalyst can be used to crack resid or resid-containing feeds as the alumina phase formed from the dispersible boehmite passivates nickel and vanadium contaminants.Type: ApplicationFiled: October 17, 2001Publication date: May 15, 2003Inventors: Rostam Madon, David H. Harris, Mingting Xu, David Stockwell, Bruce Lerner, Glenn W. Dodwell
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Publication number: 20030034275Abstract: The sulfur content of liquid cracking products, especially the cracked gasoline, of the catalytic cracking process is reduced by the use of a sulfur reduction additive comprising a non-molecular sieve support containing a high content of vanadium. Preferably, the support is alumina. The sulfur reduction catalyst is used in the form of a separate particle additive in combination with the active catalytic cracking catalyst (normally a faujasite such as zeolite Y) to process hydrocarbon feedstocks in the fluid catalytic cracking (FCC) unit to produce low-sulfur gasoline and other liquid products.Type: ApplicationFiled: September 6, 2002Publication date: February 20, 2003Inventors: Terry G. Roberie, Ranjit Kumar, Michael S. Ziebarth, Wu-Cheng Cheng, Xinjin Zhao, Nazeer Bhore
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Patent number: 6489530Abstract: A process for producing polymers from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha feedstream is contacted in the reaction zone with a catalyst under catalytic conversion concditions. Vapor products are collected overhead and the catalyst particles are passed through the stripping zone on the way to the catalyst regeneration zone. Volatiles are stripped with steam in the stripping zone and the catalyst particles are sent to the catalyst regeneration zone where coke is burned from the catalyst, which is then recycled to the reaction zone. A stream rich in C4 and/or C5 olefins is recycled to the stripping zone.Type: GrantFiled: May 19, 2000Date of Patent: December 3, 2002Assignee: Exxon Mobile Chemical Patents Inc.Inventor: Gordon F. Stuntz
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Publication number: 20020061273Abstract: The present invention relates to non-noble metal combustion catalyst for carbon monoxide comprising Cu—Al/Ce—Al complex oxides and aluminum oxide support. The catalysts comprise Ce—Al complex oxide and Cu—Al complex oxide successively loaded on the aluminum oxide support, wherein the loading weight ratio is 0.02-0.10 for Ce—Al—O/Al2O3 and 0.05-0.15 for Cu—Al—O/Al2O3, and the Cu—Al complex oxide is dispersed in cluster form on the surface of the aluminum oxide support pre-covered with high dispersed nanoparticles of the Ce—Al complex oxide. Furthermore, the present invention relates to a process for preparing the catalysts and their use as combustion promoter with high catalytic activity, high hydrothermal stability and ability of reducing NOx exhaust in the fluid catalytic cracking (FCC) process of petroleum refining.Type: ApplicationFiled: April 4, 2001Publication date: May 23, 2002Inventors: Bingxiong Lin, Wanjing Zhang, Yingjun Liu, Shijie Li, Neng Li
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Patent number: 6388152Abstract: A process for producing polymers from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is introduced into a process unit comprised of a reaction zone, a stripping zone, a catalyst regeneration zone, and a fractionation zone. The naphtha feedstream is contacted in the reaction zone with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures ranging from about 500° to 650° C. and a hydrocarbon partial pressure from about 10 to 40 psia. Vapor products are collected overhead and the catalyst particles are passed through the stripping zone on the way to the catalyst regeneration zone. Volatiles are stripped with steam in the stripping zone and the catalyst particles are sent to the catalyst regeneration zone where coke is burned from the catalyst, which is then recycled to the reaction zone.Type: GrantFiled: March 2, 2000Date of Patent: May 14, 2002Assignee: ExxonMobil Chemical Patents Inc.Inventors: Paul K. Ladwig, John E. Asplin, Gordon F. Stuntz, Tan-Jen Chen
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Pillared clay catalysts for heavy oil catalytic pyrolisis process and the preparation method thereof
Patent number: 6342153Abstract: Pillared clay catalysts for converting heavy oil or residual feedstock into maximum ethylene, propylene and butylene products comprises 30-75 wt % special pillared clays prepared by aluminum pillaring agents of high alkaline degree, 10-40 wt % inorganic oxide bonding agents, 0-30 wt % ZRP series high silicon zeolites with pentasil structure or Y-type zeolites, 0-10 wt % modified compositions of Mg, Al, K, P, Sn and polyethylene gycol, or 0-50 wt % Kaolinite matrix. The catalysts are prepared by mixing slurries, spray drying to form microspheric shapes, pillaring reaction and adding modified components. The catalysts have high catalytic activities, good light olefin selectivities and attrition resistance index.Type: GrantFiled: December 23, 1998Date of Patent: January 29, 2002Assignees: China Petrochemical Corporation, Research Institute of Petroleum ProcessingInventors: Jingjie Guan, Xieqing Wang, Zhiqing Yu, Zhengyu Chen, Qinglin Liu, Yi Liao -
Patent number: 6339180Abstract: A process for producing polypropylene from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500° C. to 650° C. and a hydrocarbon partial pressure from about 10 to 40 psia.Type: GrantFiled: March 2, 2000Date of Patent: January 15, 2002Assignee: ExxonMobil Chemical Patents, Inc.Inventors: Paul K. Ladwig, John E. Asplin, Gordon F. Stuntz, William A. Wachter, B. Erik Henry
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Patent number: 6332974Abstract: A wide-cut lubricant base stock is made by hydroisomerizing and then catalytically dewaxing a waxy Fischer-Tropsch synthesized hydrocarbon fraction feed and comprises the entire dewaxate having an initial boiling point in the 650-75O° F.+ range. Formulated lubricating oils made by admixing the base stock with a commercial automotive additive package meet all specifications, including low temperature properties, for multigrade internal combustion engine crankcase oils. The waxy feed has an initial boiling point in the 650-750° F. range and continuously boils to an end point of at least 1050° F.+. Lower boiling hydrocarbons produced by the process are separated from the base stock by simple flash distillation. The base stock comprises the entire dewaxate having an initial boiling point in the 650-750° F. range.Type: GrantFiled: September 11, 1998Date of Patent: December 25, 2001Assignee: Exxon Research and Engineering Co.Inventors: Robert J. Wittenbrink, Daniel F. Ryan, Paul J. Berlowitz, Jacob J. Habeeb
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Patent number: 6319393Abstract: A modified alumina is useful as metals passivator in fluidizable catalytic cracking catalysts. The modified alumina is prepared from a hydrated alumina, e.g., gibbsite, which is reacted with a low-molecular weight organic acid, e.g., acetic acid, forming aluminum salts. Calcination of the modified alumina results in decomposition of the aluminum salt.Type: GrantFiled: March 27, 1995Date of Patent: November 20, 2001Assignee: Petroleo Brasiliero S.A., PetrobrasInventor: Jose Carlos Duarte Macedo
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Patent number: 6225255Abstract: An additive catalyst for the cracking of heavy oil, characterized in that the additive catalyst includes: (i) a mixed metal oxide composed of an acidic metal oxide and a basic metal oxide, in which the proportion of the basic metal oxide is from 5 to 50 mole %, (ii) clay, and (iii) silica.Type: GrantFiled: June 8, 1998Date of Patent: May 1, 2001Assignee: Exxon Research and Engineering CompanyInventors: Masato Shibasaki, Nobuo Ootake, Kaori Nakamura
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Patent number: 6214211Abstract: A catalytic cracking catalyst composition comprising (a) a spherical boehmite gel alumina, (b) a zeolite, (c) a clay mineral and (d) a binder; a catalytic cracking catalyst produced by spray-drying a slurry containing the catalytic cracking catalyst composition to obtain a spherical catalyst, and then calcining the spherical catalyst; a method of catalytically cracking a heavy oil comprising catalytically cracking a heavy oil in the presence of the catalytic cracking catalyst.Type: GrantFiled: April 15, 1999Date of Patent: April 10, 2001Assignee: Idemitsu Kosan Co., LTDInventor: Toshio Itoh
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Patent number: 6165351Abstract: A silica-containing bayerite alumina is prepared by reacting aluminum sulfate, sodium aluminate and sodium silicate at a pH of about 10.5 to 11.5, preferably in the presence of finely divided magnesium hydroxide "seeds". The silica-containing bayerite is heated to obtain a hydrothermally stable silica "stabilized" eta alumina which may be used in the preparation of catalytic compositions.Type: GrantFiled: February 23, 1994Date of Patent: December 26, 2000Assignee: W. R. Grace & Co.-Conn.Inventors: Norman Raymond Laine, John Allen Rudesill, Wu-Cheng Cheng
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Patent number: 6136180Abstract: The invention provides a hydrocracking catalyst comprising at least one NU-88 zeolite, at least one group VB metal, preferably niobium, at least one amorphous or low crystallinity matrix, optionally at least one metal selected from the group formed by group VIB and VIII metals, optionally at least one element selected from the group formed by phosphorous, boron and silicon, and optionally at least one group VIIA element. The invention also relates to the use of the catalyst for hydrocracking hydrocarbon-containing feeds.Type: GrantFiled: February 19, 1999Date of Patent: October 24, 2000Assignee: Institut Francais du PetroleInventors: Eric Benazzi, Nathalie Marchal-George, Fabrice Diehl, Slavik Kasztelan
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Patent number: 6093867Abstract: A process for selectively producing C.sub.3 olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is introduced into a process unit comprised of a reaction zone, a stripping zone, a catalyst regeneration zone, and a fractionation zone. The naphtha feedstream is contacted in the reaction zone with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures ranging from about 500.degree. to 650.degree. C. and a hydrocarbon partial pressure from about 10 to 40 psia. Vapor products are collected overhead and the catalyst particles are passed through the stripping zone on the way to the catalyst regeneration zone. Volatiles are stripped with steam in the stripping zone and the catalyst particles are sent to the catalyst regeneration zone where coke is burned from the catalyst, which is then recycled to the reaction zone.Type: GrantFiled: May 5, 1998Date of Patent: July 25, 2000Assignee: Exxon Research and Engineering CompanyInventors: Paul K. Ladwig, John Ernest Asplin, Gordon F. Stuntz, Tan-Jen Chen
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Patent number: 6027707Abstract: The invention concerns NU-88 zeolite, characterized by:i) a chemical composition with the following formula, expressed in terms of the mole ratios of the oxides for the anhydrous state:100 XO.sub.2, mY.sub.2 O.sub.3, pR.sub.2/n Owherem is 10 or less;p is 20 or less;R represents one or more cations with valency n;X represents silicon and/or germanium;Y represents one or more of the following elements: aluminium, iron, gallium, boron, titanium, vanadium, zirconium, molybdenum, arsenic, antimony, chromium and manganese; andii) an X ray diffraction diagram, in its as synthesized state, which comprises the results shown in Table 1 of the description.The invention also concerns the preparation of the zeolite, any catalyst containing the zeolite and any catalytic process using such a catalyst.Type: GrantFiled: August 22, 1997Date of Patent: February 22, 2000Assignee: Institut Francais du PetroleInventors: John Leonello Casci, Sheena Maberly, Eric Benazzi, Loic Rouleau, Roland Patrick Henney
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Patent number: 5997729Abstract: A catalytic cracking catalyst, which comprises (1) a zeolite, (2) a silica.cndot.alumina or an alumina and (3) a kaolin, has a pore diameter distribution having a peak at a pore diameter of 450 to 3,000 .ANG., and has 40 to 75% of a pore volume of pores of not less than 200 .ANG. and less than 2,000 .ANG. in pore diameter and 5 to 45% of a pore volume of pores of not less than 2,000 .ANG. and less than 18,000 .ANG. in pore diameter, both based on a pore volume of pores of 40 to 18,000 .ANG. in pore diameter.Type: GrantFiled: January 16, 1998Date of Patent: December 7, 1999Assignees: Idemitsu Kosan Co., Ltd., Petroleum Energy CenterInventor: Toshio Itoh
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Patent number: 5858208Abstract: The present invention, therefore, is directed to a novel method for improving conversion in a fluidized catalytic cracking unit feed stream containing vanadium. According to the method, an effective amount of a composition comprising at least one overbase complex of a magnesium or aluminum salt or a mixture thereof and an organic acid complexing agent is incorporated into the feed stream.Type: GrantFiled: February 25, 1997Date of Patent: January 12, 1999Assignee: Baker Hughes IncorporatedInventors: Robert L. Flanders, Roy W. Greenlee, George G. Duggan, Michael J. Zetlmeisl
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Patent number: 5658454Abstract: A catalyst composition which comprises a crystalline metallosilicate having the structure of zeolite Beta, phosphor and a matrix that is substantially free of crystalline aluminum phosphate which has improved resistance to steam deactivation which has higher cracking activity than analogous catalysts prepared without phosphorus. The crystalline metallosilicate be used in the as-synthesized form or in the calcined form. included is the method to produce the catalyst composition and methods for the use of catalysts prepared by the present method in organic conversion processes. Specific embodiments of the invention involve various techniques for preparation of catalyst containing phosphorus and crystalline metallosilicates having the structure of zeolite Beta. Catalysts prepared according to the method of this invention are useful for organic compound, e.g., hydrocarbon compound, conversion processes. Organic compound conversion processes include cracking, hydrocracking, and transalkylation, among others.Type: GrantFiled: June 5, 1995Date of Patent: August 19, 1997Assignee: Mobil Oil CorporationInventors: Robert P. L. Absil, Thomas F. Degnan, George H. Hatzikos, Jocelyn A. Kowalski, Thomas Mebrahtu, Grant H. Yokomizo
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Patent number: 5618406Abstract: Bastnaesite and magnesium-containing materials can be chemically reacted by use of reactions wherein alumina is made into a sol by use of a mono-protonic acid and then reacted with a magnesium-containing ingredient (e.g., magnesium acetate) and a bastnaesite ingredient such that, upon spray drying and calcination of the resulting composition, the bastnaesite is chemically reacted with magnesia to form a bastnaesite/magnesia/alumina compound having SO.sub.x activity.Type: GrantFiled: December 28, 1995Date of Patent: April 8, 1997Assignee: Intercat, Inc.Inventor: Edward J. Demmel
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Patent number: 5618407Abstract: A process for catalytically cracking a hydrocarbon-containing oil employs a cracking catalyst comprising aluminum borate and zirconium borate.Type: GrantFiled: July 18, 1995Date of Patent: April 8, 1997Assignee: Phillips Petroleum CompanyInventors: Lyle R. Kallenbach, Dwayne R. Senn, Marvin M. Johnson
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Patent number: 5609750Abstract: A catalyst composition for converting hydrocarbons in a hydrotreatment process (hydrodesulfurization and/or hydrodenitrogenization) and simultaneously cracking them, containing an alumina-silica-alumina carrier built up from alumina and silica-alumina, on which hydrogenation metals, such as molybdenum, nickel, and/or cobalt, have been provided and which also contains a catalytically active amount of boron, generally in the range of 1 to 20 wt. %. The invention also relates to a process for the preparation of such a catalyst, with boron being provided ahead of the Group VIII component. The carrier material used may be made up of mixtures of alumina and amorphous silica-alumina or of mixtures of alumina and silica-coated alumina. The catalyst composition is highly suitable for converting vacuum gas oil into middle distillate oils by hydrotreating.Type: GrantFiled: April 26, 1994Date of Patent: March 11, 1997Assignee: Akzo Nobel NVInventors: Pieter J. Nat, Jacob L. de Booys, Johannes W. F. M. Schoonhoven
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Patent number: 5601699Abstract: Methods for preparing phosphorus containing catalysts comprising a large-pore zeolite, e.g., zeolite Beta, zeolite ZSM-12, or zeolite ZSM-20, and a matrix which have improved attrition resistance. The present invention includes the catalyst compositions produced by the above methods. Also included in the present invention are methods for the use of catalysts prepared by the present method in hydrocarbon cracking processes. It is desired to develop cracking catalysts for organic compound conversion that have improved cracking yields and have good attrition resistance. This invention involves the use of large pore siliceous zeolites and a highly siliceous matrix to produce a cracking catalyst with improved cracking yields and good attrition resistance. The invention further involves the use of phosphorus and the use of selected sequences for combining the compounds in the manufacture of the catalyst to enhance the attrition resistance of the catalyst.Type: GrantFiled: May 19, 1995Date of Patent: February 11, 1997Assignee: Mobil Oil CorporationInventors: Thomas F. Degnan, Terry E. Helton, Grant H. Yokomizo
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Patent number: 5547564Abstract: Catalytic cracking catalysts which contain bayerite and/or eta alumina are used to process hydrocarbon feedstocks that contain nickel.Type: GrantFiled: May 22, 1995Date of Patent: August 20, 1996Assignee: W. R. Grace & Co.-Conn.Inventors: Wu-Cheng Cheng, Kuppuswamy Rajagopalan
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Patent number: 5525210Abstract: Zeolite cracking catalyst compositions and additives that contain a Lewis acid supported on alumina are useful to process hydrocarbon feedstocks. The compositions are especially useful for the production of reduced sulfur gasoline.Type: GrantFiled: August 30, 1994Date of Patent: June 11, 1996Assignee: W. R. Grace & Co. Conn.Inventors: Richard F. Wormsbecher, Gwan Kim
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Patent number: 5472594Abstract: Disclosed is a process for converting a hydrocarbon charge to a product containing improved yields of C.sub.4 /C.sub.5 olefins with a reduction in the loss of gasoline yield which comprises:passing said hydrocarbon charge into contact with a catalyst comprising a phosphorus-containing medium pore zeolite mixed as an additive with Y-zeolite in a weight ratio of 0.005 to 0.10, said zeolites in separate or composite spray dried particles,wherein the catalyst to oil ratio is 0.1 to 10, reacting said hydrocarbon charge at a temperature of 800.degree. F. to 1200.degree. F., a pressure of 0 to 150 psig, and in the absence of added hydrogen, thereby producing a product containing improved yields of C.sub.4 /.sub.5 olefins and reduced loss in gasoline yield.Type: GrantFiled: July 18, 1994Date of Patent: December 5, 1995Assignee: Texaco Inc.Inventors: Chih-Hao M. Tsang, Laurence D. Neff, Pei-Shing E. Dai
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Patent number: 5366616Abstract: This invention relates to hydrocarbon conversion processes using novel molecular sieve compositions as the catalyst. These molecular sieves contain chromium in the framework structure along with aluminum and silicon. The process of preparing the chromium-containing molecular sieves involves contacting a starting molecular sieve with a solution or slurry of a fluoro salt of chromium under effective process conditions to provide for aluminum extraction and substitution of chromium.Type: GrantFiled: November 24, 1992Date of Patent: November 22, 1994Assignee: UOPInventors: Gary W. Skeels, Diane M. Chapman, Edith M. Flanigen
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Patent number: 5326465Abstract: A process for producing LPG rich in propylene, butylenes and high octane number gasoline by catalytic conversion which comprises contacting the preheated hydrocarbon feedstock with a solid acidic catalyst which contains rare-earth-containing high silica zeolite having the structure of a pentasil (ZRP), rare-earth-Y zeolite (REY) and high silica Y zeolite in a riser or a fluidized bed reactor, at a temperature in the range of from about 480.degree. C. to about 550.degree. C., a pressure in the range of from about 130 KPa to about 350 KPa, a weight hourly space velocity in the range of 1 to 150 hr-1, a catalyst-to-oil ratio in the range of 4 to 15, and a steam-to-feedstock ratio in the range of 0.05 to 0.12:1 by weight.Type: GrantFiled: March 12, 1993Date of Patent: July 5, 1994Assignees: China Petro-Chemical Corporation, Research Institute of Petroleum ProcessingInventors: Huo Yongqing, Wang Zeyu, Wang Yamin, Lu Yukang
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Patent number: 5318695Abstract: A fluid catalytic cracking process for producing relatively low emissions fuels. The feedstock is exceptionally low in nitrogen and aromatics and relatively high in hydrogen. The catalyst is an amorphous silica-alumina or a zeolitic material having a relatively small unit cell size. The feedstock can be characterized as having less than about 50 wppm nitrogen; greater than about 13 wt. % hydrogen; less than about 7.5 wt. % 2+ring aromatic cores; and not more than about 15 wt. % aromatic cores overall.Type: GrantFiled: November 30, 1992Date of Patent: June 7, 1994Assignee: Exxon Research and Engineering CompanyInventors: Paul E. Eberly, William E. Winter, William L. Schuette, William A. Wachter, Tan-Jen Chen
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Patent number: 5314612Abstract: Disclosed is a fluid catalytic cracking process for producing low emissions fuels. The feedstock is exceptionally low in nitrogen and aromatics and relatively high in hydrogen. The catalyst is a mixture of zeolite Y and zeolite beta (.beta.). The feedstock can be characterized as having less than about 50 wppm nitrogen; greater than about 13 wt. % hydrogen; less than about 7.5 wt. % 2+ ring aromatic cores; and not more than about 15 wt. % aromatic cores overall.Type: GrantFiled: November 30, 1992Date of Patent: May 24, 1994Assignee: Exxon Research and Engineering CompanyInventors: Paul E. Eberly, William E. Winter
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Patent number: 5306417Abstract: Catalytic cracking catalysts and catalyst additives which contain silica modified bayerite and/or eta alumina.Type: GrantFiled: July 6, 1992Date of Patent: April 26, 1994Assignee: W. R. Grace & Co.-Conn.Inventors: Wu-Cheng Cheng, John A. Rudesill
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Patent number: 5302281Abstract: Middle distillates can be produced efficiently in high yields by catalytically cracking petroleum hydrocarbons by contacting the petroleum hydrocarbons at cracking conditions with a catalyst composition comprising a cation-exchanged stevensite.Type: GrantFiled: July 6, 1992Date of Patent: April 12, 1994Assignee: Idemitsu Kosan Co., Ltd.Inventors: Eiji Iwamatsu, Yasushi Wakushima, Yoshifumi Hiramatsu
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Patent number: 5294332Abstract: A process and catalyst are provided for the catalytic cracking of a hydrocarbon feedstock to catalytic cracking conversion products comprising the steps of contacting the hydrocarbon feedstock at catalytic cracking conditions with a catalytic cracking catalyst. The catalytic cracking catalyst is prepared by modifying a base catalyst comprising a crystalline molecular sieve and a binder by combining the base catalyst with an ion exchange solution comprising at least one trivalent cation, a trivalent cation complexing agent, and a hydroxide-producing component, wherein the ion exchange solution has a pH ranging from about 4 to about 8, and producing an ion exchanged catalyst and excess ion exchange solution. The modified catalyst is then separated from said excess ion exchange solution.Type: GrantFiled: November 23, 1992Date of Patent: March 15, 1994Assignee: Amoco CorporationInventor: Marvin R. Klotz
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Patent number: 5286374Abstract: An economic and safe process includes a catalytic cracking of the rubber tires and rubber products in the presence of mica catalyst selected from muscovite, sericite and biotite at a reaction temperature of 230.degree.-400.degree. C. under a pressure of 1-2.5 atmospheres for forming mixed oils, carbon black, gaseous products, and other residual products.Type: GrantFiled: February 26, 1993Date of Patent: February 15, 1994Inventor: Huang-Chuan Chen
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Patent number: 5243121Abstract: A composite fluid catalytic cracking catalyst comprising a non-zeolitic component of at least 45% Al.sub.2 O.sub.3 and containing .ltoreq.30% Y zeolite with unit cell size .ltoreq.24.29 .ANG., the matrix (non-zeolitic component) of said catalyst having a B.E.T. surface area .gtoreq.50 m.sup.2 /g and a catalyst Lewis/Bronsted acid site ratio of .gtoreq.1.5 wherein the total number of Bronsted acid sites is .ltoreq.30 micromoles/g of catalyst. The catalyst is used to increase the isobutylene and isoamylenes content of cracked products obtained in a fluid catalytic cracking unit.Type: GrantFiled: March 19, 1992Date of Patent: September 7, 1993Assignee: Engelhard CorporationInventors: Rostam J. Madon, Gerald S. Koermer, Michel Deeba, Kathleen Y. Yau
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Patent number: 5200058Abstract: A process is provided for effecting catalytic conversion of an organic compound-containing feedstock to conversion product which comprises contacting said feedstock under catalytic conversion conditions with a catalyst comprising an active form of a functionalized inorganic, porous, non-layered crystalline phase having uniformly sized pores of at least about 13, e.g., at least about 15, Angstrom Units in diameter.Type: GrantFiled: June 8, 1992Date of Patent: April 6, 1993Assignee: Mobil Oil Corp.Inventors: Jeffrey S. Beck, David C. Calabro, Sharon B. McCullen, Bruce P. Pelrine, Kirk D. Schmitt, James C. Vartuli
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Patent number: 5196633Abstract: A process is provided for effecting catalytic conversion of an organic compound-containing feedstock to conversion product which comprises contacting said feedstock under catalytic conversion conditions with a catalyst comprising an active form of an inorganic, porous crystalline phase exhibiting, after calcination, a hexagonal arrangement of uniformly-sized pores having diameters of at least about 13, e.g., at least about 15, Angstrom Units and exhibiting a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 Angstrom Units.Type: GrantFiled: March 18, 1992Date of Patent: March 23, 1993Assignee: Mobil Oil Corp.Inventors: Charles T. Kresge, Michael E. Leonowicz, Wieslaw J. Roth, James C. Vartuli
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Patent number: 5164072Abstract: A carbon monoxide oxidation catalyst especially useful as a co-catalyst in fluid catalytic cracking operations is made by impregnating particulate alumina with lanthana and a small amount of platinum. Cerium must be excluded.Type: GrantFiled: January 30, 1992Date of Patent: November 17, 1992Assignee: W. R. Grace & Co.-Conn.Inventor: Alan W. Peters
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Patent number: 5160601Abstract: Novel hydrocarbon conversion catalysts and methods for their preparation are disclosed. The catalysts are particularly appropriate for the conversion of hydrocarbon feeds to high octane gasoline, while increasing light cycle oil and decreasing heavy cycle oil yield. The catalyst comprises a zeolite, a cogelled silica-alumina matrix, and clay.Type: GrantFiled: September 4, 1990Date of Patent: November 3, 1992Assignee: Chevron Research CompanyInventor: Theresa A. Pecoraro
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Patent number: 5141624Abstract: A catalytic process for cracking vanadium-containing oils employs a physical mixture of (a) zeolite embedded in an inorganic matrix material and (b) magnesium oxide on alumina support.Type: GrantFiled: March 30, 1989Date of Patent: August 25, 1992Assignee: Phillips Petroleum CompanyInventors: Ping-Chau Liao, Douglas D. Klendworth, Fu M. Lee
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Patent number: 5131993Abstract: Disclosed is a method for cracking a hydrocarbon material. The method includes introducing a stream including a hydrocarbon fluid and a carrier fluid into a reaction zone. A microwave discharge plasma is continuously maintained within the reaction zone, and in the presence of the hydrocarbon fluid and the carrier fluid. Reaction products of the microwave discharge are collected downstream of the reaction zone.Type: GrantFiled: June 11, 1990Date of Patent: July 21, 1992Assignee: The Univeristy of ConnecticutInventors: Steven L. Suib, Zongchao Zhang
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Patent number: 5108579Abstract: A zeolite, designated zeolite NU-86, having a molar composition expressed by the formula 100 XO.sub.2 : equal to or less than 10 Y.sub.2 O.sub.3 : equal to less than 20 R.sub.2/n O where R is one or more cations of valency n, X is silicon and/or germanium, Y is one or more of aluminum, iron, gallium, boron, titanium, vanadium, zirconium, molybdenum, arsenic, antimony, chromium and manganese and having an X-ray diffraction pattern including the lines shown in Table 1 is prepared from a reaction mixture comprising XO.sub.2 (preferably silica), Y.sub.2 O.sub.3 (preferably alumina) and a polymethylene alpha, omega-diammonium cation. This zeolite is a useful catalyst for a variety of reactions.Type: GrantFiled: June 17, 1991Date of Patent: April 28, 1992Assignee: Imperial Chemical Industries PLCInventor: John L. Casci
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Patent number: 5037530Abstract: There is provided a process for cracking hydrocarbon feedstocks which include large hydrocarbon molecules. Examples of such feedstocks are those which include a large proportion of resids. The catalyst used in this process comprises a layered silicate, such as magadiite, containing interspathic polymeric silica which serves to prop open the layers.Type: GrantFiled: August 22, 1989Date of Patent: August 6, 1991Assignee: Mobil Oil CorporationInventors: Garry W. Kirker, Thomas F. Degnan, Jr., Albin Huss, Jr., Michael E. Landis
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Patent number: 5037531Abstract: A catalytic cracking process is disclosed using a catalyst comprising a framework dealuminate Y zeolite, which is rare earth and aluminum exchanged.Type: GrantFiled: October 30, 1989Date of Patent: August 6, 1991Assignee: Mobil Oil CorporationInventors: Robert G. Bundens, Joseph A. Herbst
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Patent number: 5021146Abstract: A process for regeneration of cracking catalyst while minimizing NO.sub.x emissions is disclosed. A Group IIIB based DeNO.sub.x additive is present in an amount and in a form which reduces NO.sub.x emissions. Relatively small amounts of lanthanum or yttrium oxides, or lanthanum titanate, preferably impregnated on a separate support are effective to reduce NO.sub.x produced in the regenerator. The additive converts NO.sub.x to nitrogen even when Pt CO combustion promoter and some excess oxygen are present in the regenerator.Type: GrantFiled: December 28, 1989Date of Patent: June 4, 1991Assignee: Mobil Oil CorporationInventor: Arthur A. Chin
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Patent number: 5019241Abstract: In a hydrocarbon fluid catalytic cracking process, high concentrations of sodium in the hydrocarbon entering the reactor will poison the reaction sites on the FCC catalysts, thereby reducing the efficiency of the cracking process. The addition of an aluminum compound to the hydrocarbon significantly reduces the poisoning effect of the sodium on the catalyst. The aluminum compound may be selected from the group consisting of aluminum nitrate, aluminum isopropoxide, aluminum oxide and sulfate salts of aluminum.Type: GrantFiled: April 27, 1990Date of Patent: May 28, 1991Assignee: Betz Laboratories, Inc.Inventor: David R. Forester
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Patent number: 5015349Abstract: Disclosed is a method for cracking a hydrocarbon material. The method includes introducing a stream including a hydrocarbon fluid into a reaction zone. A microwave discharge plasma is continuously maintained within the reaction zone, and in the presence of the hydrocarbon fluid. Reaction products of the microwave discharge are collected downstream of the reaction zone.Type: GrantFiled: December 21, 1989Date of Patent: May 14, 1991Assignee: University of ConnecticutInventors: Steven L. Suib, Zongchao Zhang
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Patent number: 4919787Abstract: An improved method for passivating metals in a hydrocarbon feedstock during catalytic cracking has been discovered. The method involves contacting the feedstock with a passivating agent comprising a precipitated porous rare earth oxide, alumina, and aluminum phosphate precipitate. The passivating agent may be coated on a cracking catalyst, be part of the matrix of a cracking catalyst, or be added to the cracking operation as discrete particles.Type: GrantFiled: April 7, 1989Date of Patent: April 24, 1990Assignee: Mobil Oil CorporationInventors: Arthur W. Chester, Pochen Chu, Albin Huss, Jr., Garry W. Kirker
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Patent number: 4898660Abstract: A novel family of crystalline, microporus aluminophosphate compositions is synthesized by hydrothermal crystallization at elevated temperatures of aluminophosphate gels containing a molecular structure forming template. The family comprises a number of distinct species, each with a unique crystal structure. Calcination removes volatile extraneous matter from the intracrystalline void space and yields microporus crystalline adsorbents with uniform pores, the dimensions of which vary, among the individual species, from about 3A to 10A diameter. The composition exhibit properties somewhat analogous to zeolitic molecular sieves which render them useful as catalysts or catalyst bases in chemical reactions such as hydrocarbon conversions.Type: GrantFiled: October 20, 1983Date of Patent: February 6, 1990Assignee: Union Carbide CorporationInventors: Stephen T. Wilson, Brent M. Lok, Edith M. Flanigen
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Patent number: 4895638Abstract: A process for the catalytic cracking of heavy petroleum fractions into lower hydrocarbons, such as fuel products. The process comprises contacting the petroleum fractions at an elevated temperature with a cracking catalyst comprising (a) a layered metal oxide of the titanometallate type intercalated with an interspathic polymeric chalcogenide, e.g., polymeric silica and, optionally (b) a porous crystalline silicate component such as a large pore zeolite material.Type: GrantFiled: April 17, 1989Date of Patent: January 23, 1990Assignee: Mobil Oil CorporationInventors: Brent A. Aufdembrink, Thomas F. Degnan, Charles T. Kresge
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Patent number: 4894143Abstract: Catalytic compositions which comprise alumina bound spinel and/or spinel-mullite mixtures having an alkali metal content of below about 0.50 weight percent, preferably below about 0.10. The compositions are obtained by calcining and caustic leaching preformed particulate composites of clay and alumina sol, preferably chlorhydrol. The catalysts are particularly useful for the catalytic cracking of heavy hydrocarbon feedstocks to obtain gasoline and light cycle oil. When used for cracking feedstocks high in vanadium content these compositions may contain added alkaline earth oxide in order to passivate the vanadium.Type: GrantFiled: September 26, 1988Date of Patent: January 16, 1990Assignee: W. R. Grace & Co.-Conn.Inventor: Roger J. Lussier