And Rare Earth Metal (sc, Y Or Lanthanide)containing Patents (Class 502/65)
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Patent number: 4957889Abstract: Aluminum-rare earth element-oxygen oligomers, having unprecedented hydrothermal stability and disclosed such materials having utility as precursors in the preparation of large pore intercalated clays.Type: GrantFiled: January 31, 1989Date of Patent: September 18, 1990Assignee: UOPInventor: John R. McCauley
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Patent number: 4956075Abstract: The use of a catalyst containing Mn, a large pore crystalline molecular sieve, and optionally rare earths in catalytic cracking is disclosed. This catalyst gives high gasoline selectivity with low coke yields and is suitable for either gas oil or resid cracking applications.Type: GrantFiled: December 22, 1988Date of Patent: September 11, 1990Assignee: Mobil Oil CorporationInventors: Philip J. Angevine, Robert G. Bundens, Joseph A. Herbst, Albin Huss, Jr., Sadi Mizrahi
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Patent number: 4952544Abstract: Large-pore intercalated clays, for example, smectites, with pillars of aluminum-rare earth element-oxygen oligomers, having unprecedented hydrothermal stability. Product distributions demonstrate desirable synergistic effects (less gas, more gasoline, higher activity) using a mixture of intercalated clay and zeolite.Type: GrantFiled: March 5, 1987Date of Patent: August 28, 1990Assignee: UOPInventor: John R. McCauley
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Patent number: 4950312Abstract: A SiO.sub.2 -bound, substantially carbonate-free, calcium-containing zeolite A granulate in which the calcium content is 0.4 to 1 mole CaO/mole Al.sub.2 O.sub.3 and a process for the production such SiO.sub.2 -bound calcium exchanged zeolite A granulate in a CO.sub.2 -free atmosphere at temperatures of 350.degree. C. to 700.degree. C. The SiO.sub.2 -bound zeolite granulate A being useful as an adsorbent in the recovery of oxygen by the pressure change adsorption process.Type: GrantFiled: May 11, 1988Date of Patent: August 21, 1990Assignee: Bayer AktiengesellschaftInventors: Lothar Puppe, Gerhard Reiss
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Patent number: 4946581Abstract: Disclosed are hydrocarbon conversion catalyst compositions, such as fluidizable cracking catalyst compositions, containing an anionic clay, e.g. a clay having a hydrotalcite, an ettringite or a hydrocalumite structure, for the conversion of sulphur-containing feedstocks, the anionic clay serving as sulphur oxides binding material. Also disclosed are absorbents containing the anionic clay embedded in a matrix. The absorbents may be used to purify sulphur oxides-containing gases.Type: GrantFiled: May 19, 1989Date of Patent: August 7, 1990Assignee: Akzo N.V.Inventor: Emanuel H. van Broekhoven
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Patent number: 4943545Abstract: Zeolitic catalysts containing framework displaced aluminum, e.g., steamed or spent catalysts, are activated by contact with aqueous fluoride solution under mild conditions. The treatment can enhance catalytic activity, ion-exchange capacity and crystallinity by replacing aluminum in the zeolitic framework.Type: GrantFiled: October 14, 1988Date of Patent: July 24, 1990Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Scott Han, Bruce P. Pelrine
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Patent number: 4935393Abstract: A process for catalytically reducing nitrogen oxides in an exhaust gas such as a combustion gas and a catalyst suitable for use therein. The catalyst comprises a zeolite Y which has been ion exchanged with lithium ions and/or rare earth metal ions, and may be dispersed in an amorphous oxide gel matrix.Type: GrantFiled: October 5, 1987Date of Patent: June 19, 1990Assignee: Kali-Chemie AGInventors: Norbert Schwetje, Dieter Kipping
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Patent number: 4933487Abstract: In an improved process for preparing 4-pentenates by isomerization, where isomeric pentenates are treated at elevated temperatures with zeolites and 4-pentenates are distilled out of the reaction mixture, the improvement comprises using pentenates in mixture with alkanols.Type: GrantFiled: March 22, 1989Date of Patent: June 12, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Heinrich Aichinger, Fritz Naeumann, Rolf Fischer
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Patent number: 4929583Abstract: Hydrocarbons containing vanadium are converted to lower boiling fractions employing a zeolitic cracking catalyst containing a significant concentration of a vanadium passivator.Type: GrantFiled: June 16, 1988Date of Patent: May 29, 1990Assignee: Chevron Research CompanyInventors: Eugene A. Pasek, Norman C. Morgan
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Patent number: 4921824Abstract: An improved composition and method for passivating vanadium on or in a catalytic cracking catalyst during the process of catalytic cracking of hydrocarbons is described. The improved method comprises mixing discrete particles of lanthanum oxide and, optionally, other rare earth oxides along with the catalyst and the hydrocarbon during the catalytic cracking process.Type: GrantFiled: June 30, 1988Date of Patent: May 1, 1990Assignee: Mobil Oil Corp.Inventors: Arthur A. Chin, Michael S. Sarli
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Patent number: 4914067Abstract: Cracking catalysts and their use in cracking processes are disclosed. The cracking catalyst are prepared using mixtures of catalytic cracking catalysts and selected silicoaluminophosphate molecular sieves of U.S. Pat. No. 4,440,871.Type: GrantFiled: November 28, 1986Date of Patent: April 3, 1990Assignee: UOPInventors: Regis J. Pellet, Peter K. Coughlin, Mark T. Staniulis, Gary N. Long, Jule A. Rabo
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Patent number: 4910177Abstract: Disclosed is a process of reduction of aldehydes or ketones by means of reaction with alcohols, in the presence of a catalyst, to produce alcohols which correspond to said respective aldehyde or ketone. A solid of partially dehydrated one or more metal hydroxides whose metal is selected from the group consists of titanium, tin, ion, aluminum, cerium, and niobium is used as the catalyst. This process can be conducted either in a gas phase or in a liquid phase.Type: GrantFiled: April 22, 1988Date of Patent: March 20, 1990Assignee: Japan Tobacco Inc.Inventors: Hajime Matsushita, Kyoko Takahashi, Makoto Shibagaki
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Patent number: 4900529Abstract: ZSM-5 crystallites are produced with very low levels of blocking tetrapropyl ammonium ions (Q). The reaction mixture contains sources of silica, soda, alumina and trace amounts of Q ions as nucleation agents. Because the crystallites as synthesized from the aqueous medium exhibit only a very small fraction of blocking cations, there is always a diffusion path for the hydrated sodium ions to be exchanged without the need of prior removal of the blocking cations by calcination or otherwise. The small size crystallites can be exchanged, blended with other materials, and formed into catalyst particles. The silica to alumina ratio can be varied and when no aluminum is added, silicalite may be formed. The systhesis can be done in 24 hours or less.Type: GrantFiled: December 23, 1985Date of Patent: February 13, 1990Assignee: W. R. Grace & Co.-Conn.Inventors: Moises G. Sanchez, Charles C. Chang, Norman R. Laine, Sandra M. Waters
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Patent number: 4894142Abstract: A highly selective hydrocracking process providing increased yields of middle distillates is disclosed. The process employs a catalyst comprising a Y-type hydrogen form zeolite having a unit cell size between about 24.20 Angstroms and 24.40 Angstroms, a metal hydrogenation component and refractory oxide support materials. The catalyst is characterized by low ammonia temperature programmed desorption (TPD) acidity strength values. This may be achieved by dehydroxylation caused by a dry calcination.Type: GrantFiled: February 28, 1989Date of Patent: January 16, 1990Assignee: UOPInventor: Karl Z. Steigleder
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Patent number: 4891164Abstract: A method is disclosed for separating and immobilizing a radioactive material comprising: contacting an aqueous medium containing said radioactive material with a reactive composition comprising at least one alkali metal, at least one Group IIIB metal and at least one phosphorus oxide; maintaining said reactive composition in contact with said aqueous medium for an effective period of time to react a desired amount of said radioactive material with said reactive composition to form a radioactive-material-containing composition; and separating said radioactive-material-containing composition from said aqueous medium. Radioactive-material-containing compositions exhibiting low leach rates are also disclosed.Type: GrantFiled: January 6, 1989Date of Patent: January 2, 1990Assignee: The Standard Oil CompanyInventors: Thomas R. Gaffney, JoAnn Henry, Michael J. Desmond
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Patent number: 4880787Abstract: New catalyst compositions of superior hydrothermal stability, which evidence increased gasoline plus distillate yields, improved coke selectivity and reduced C.sub.4.sup.- gas yields, are based on framework dealuminated faujasitic zeolites having a framework silica to alumina molar ratio of from about 5 to 100. In a preferred embodiment, an "ultrastable Y" composited with a matrix, is subjected to a treatment with a source of aluminum and rare earth compounds followed by hydrothermal treatments to improve the hydrothermal stability and selectivity of the catalyst for catalytic cracking. This is evidenced by higher gasoline plus distillate yields and lower coke and gas production at lower catalyst useage per barrel of feed relative to commercial cracking catalysts currently being used.Type: GrantFiled: January 6, 1988Date of Patent: November 14, 1989Assignee: Mobil Oil CorporationInventors: Robert G. Bundens, Joseph A. Herbst
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Patent number: 4877514Abstract: Commercial catalysts are prepared combining the various ingredients into a catalytic binder system which has been freed of sodium so that the catalyst ingredients can be preferably spray dried and used in Fluid Catalytic Cracking or Reduced Crude Conversion hydrocarbon conversion operations without subsequent washing or drying. Catalysts can even be prepared on site, e.g., in spray drier operations performed in the FCC/RCC refenerator. Low-sodium slurries of any or all of the following ingredients can be employed in the manufacture: zeolites, clays, sols, carbon blacks, sacrificial sieves, acid matrix substances, and getters.Type: GrantFiled: November 10, 1988Date of Patent: October 31, 1989Assignee: Ashland Oil, Inc.Inventors: William P. Hettinger, H. Wayne Beck
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Patent number: 4866019Abstract: Disclosed are hydrocarbon conversion catalyst compositions, such as fluidizable cracking catalyst compositions, containing an anionic clay, e.g. a clay having a hydrotalcite, an ettringite or a hydrocalumite structure, for the conversion of sulphur-containing feedstocks, the anionic clay serving as sulphur oxides binding material. Also disclosed are absorbents containing the anionic clay embedded in a matrix. The absorbents may be used to purify sulphur oxides-containing gases.Type: GrantFiled: December 28, 1987Date of Patent: September 12, 1989Assignee: Akzo N.V.Inventor: Emanuel H. van Broekhoven
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Patent number: 4855036Abstract: Catalytic cracking processes wherein the cracking catalysts are prepared by: (1) contacting a mixture of a large pore zeolite and an inorganic oxide matrix at effective conditions of temperature, pH and time with a fluoro salt; and (2) ammonium exchanging the product of step (1) to provide a catalyst having less than 0.3 percent by weight Na.sub.2 O, based on total catalyst weight, or less than 2.0 percent by weight of the zeolite employed in the catalyst. Optionally, the zeolite used is provided with an effective amount of at least one cation selected from the class consisting of cerium, lanthanum, praseodymium, neodymium, promethium, samarium, europium, lutetium, gadolinium, terbium dysprosium, holmium, erbium, thulium and ytterbium.Type: GrantFiled: December 18, 1987Date of Patent: August 8, 1989Assignee: UOPInventors: Robert L. Chiang, Raymond G. Perigard, Jule A. Rabo
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Patent number: 4853203Abstract: New ferrierites are disclosed as well as their process of manufacture.According to the invention, these new ferrierites are characterized by:(a) The following approximate formula:M.sub.x/n (T.sup.III O.sub.2).sub.x (Si.sup.IV O.sub.2).sub.36-xwherein T.sup.III is at least one element selected from the group formed of boron (B.sup.III),aluminum (Al.sup.III),gallium (Ga.sup.III) and iron (Fe.sup.III)x ranges from 0.05 and 6.6M is a compensation cationn is the valence of M.(b) A particular X-ray diagram,(c) A fluorine content after synthesis ranging from about 0.01 to 1.6% by weight, and(d) A Si.sup.IV /T.sup.III molar ratio of at least 4.75.Type: GrantFiled: November 23, 1987Date of Patent: August 1, 1989Assignee: Institut Francais Du PetroleInventors: Jean-Louis Guth, Anne-Catherine Faust, Francis Raatz, Jean-Marc Lamblin
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Patent number: 4853355Abstract: A method for enhancing the binding of certain negatively surface charged molecular sieves to a silica binder is disclosed. As modified, molecular sieves having enhanced binding characteristics are also taught.Type: GrantFiled: January 7, 1988Date of Patent: August 1, 1989Assignee: UOPInventors: Albert S. Behan, Robert L. Chiang, Mark T. Staniulis
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Patent number: 4842720Abstract: A novel siliceous crystalline composition of matter further comprising one or more metals is prepared by admixing a basic silica salt and a dissolved metal salt in the presence of a quaternary ammonium ion and subsequently heating under pressurized conditions. This novel composition of matter is useful as a catalyst for oxidation, alkylation, disproportionation, synthesis gas conversion, hydrocracking, and hydrodewaxing.Type: GrantFiled: May 18, 1987Date of Patent: June 27, 1989Assignee: Union Oil Company of CaliforniaInventor: Eric L. Moorehead
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Patent number: 4834869Abstract: This invention relates to a method of preparing a metal-containing amorphous magnesia-alumina-aluminum phosphate catalyst support involving the admixture of an organic cation having a size equal to or greater than 2 Angstroms, the organic cation preferably being a tertiary or a tetraalkylammonium or phosphonium cation. The method permits recovery of a catalyst support having a controlled pore size distribution. The invention also relates to an improved catalytic support as well as an improved petroleum residua upgrading process comprising hydrotreating residua in the presence of the improved catalyst support.Type: GrantFiled: February 29, 1988Date of Patent: May 30, 1989Assignee: Mobil Oil Corp.Inventors: Philip J. Angevine, Pochen Chu, Thomas F. Degnan, Garry W. Kirker
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Patent number: 4824815Abstract: This invention relates to a catalyst suitable for use in a fluid catalytic process and a method of using the catalyst on hydrocarbons containing one or more poison metal of vanadium or nickel to convert the hydrocarbons to lower boiling fractions. The catalyst contains a particulate and substantially water-insoluble strontium compound (in addition to a conventional zeolite and catalyst matrix) which reacts with and traps the metal poison to preserve the structure of the zeolite and, in addition, lowers the coke make and hydrogen production.Type: GrantFiled: February 13, 1987Date of Patent: April 25, 1989Assignee: Exxon Research and Engineering CompanyInventor: Edwin L. Kugler
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Patent number: 4818737Abstract: Large-pore intercalated clays, for example, smectites, with pillars of aluminum-rare earth element-oxygen oligomers, having unprecedented hydrothermal stability. Product distributions demonstrate desirable synergistic effects (less gas, more gasoline, higher activity) using a mixture of intercalated clay and zeolite.Type: GrantFiled: March 5, 1987Date of Patent: April 4, 1989Assignee: UOPInventor: John R. McCauley
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Patent number: 4810369Abstract: Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock under cracking conditions with a cracking catalyst having a surface area of at least 150 m.sup.2 /gm and comprising greater than about 25 weight percent of a rare earth exchanged Y zeolite dispersed in a matrix containing a synthetic silica-alumina component in which the weight ratio of silica-to-alumina is equal to or greater than about 0.5.Type: GrantFiled: May 7, 1987Date of Patent: March 7, 1989Assignee: Union Oil Company of CaliforniaInventor: Julius Scherzer
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Patent number: 4808563Abstract: A catalyst is disclosed which comprises a molybdenum-tungsten-containing complex represented by the formulaMo.sub.a W.sub.b M.sub.c A.sub.d O.sub.Type: GrantFiled: August 19, 1987Date of Patent: February 28, 1989Assignee: The Standard Oil CompanyInventor: Louis J. Velenyi
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Patent number: 4806512Abstract: A process for treating a virgin catalyst useful to promote hydrocarbon conversion, e.g., cracking at hydrocarbon conversion, e.g., cracking, conditions comprising:(a) contacting the virgin catalyst with a liquid reductive wash medium; and(b) contacting the reductively washed virgin catalyst with a liquid oxidative wash medium, thereby producing a washed virgin catalyst with at least one improved catalytic property.Type: GrantFiled: May 18, 1987Date of Patent: February 21, 1989Assignee: ChemCat CorporationInventor: Frank J. Elvin
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Patent number: 4803185Abstract: The invention provides petroleum cracking and octane boosting catalysts containing a composite of an intermediate pore NZMS in combination with another non-zeolitic molecular sieve having the same framework structure, and to processes for cracking of petroleum for the purpose of enhancing the octane rating of the gasoline produced.Type: GrantFiled: June 4, 1987Date of Patent: February 7, 1989Assignee: UOPInventors: James G. Miller, Regis J. Pellet, Edwar S. Shamshoum, Jule A. Rabo
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Patent number: 4801692Abstract: A compound having the formula ##STR1## wherein R is one or more moieties selected from the group consisting of hydrogen and alkyl having from 1 to 20 carbon atoms, R.sup.2 is an alkyl group having from 1 to 20 carbon atoms, R.sup.1 is an alkyl group having from 1 to 20 carbon atoms, m is an integer from 0 to 3, y is an integer from 1 to 3, x and z are each an integer from 0 to 2, n and p are each an integer from 1 to 20, with the proviso that m+yp=4n, the sum of x, y and z is 3.Type: GrantFiled: August 11, 1986Date of Patent: January 31, 1989Assignee: Rhone-Poulenc Inc.Inventors: Peter S. Gradeff, Fred G. Schreiber
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Patent number: 4793980Abstract: Hollow porous microspheres are used as substrates and containers for catalyst to make microsphere catalysts.The hollow porous microspheres are made from dispersed particle compositions. The microspheres have a single central cavity, have substantially uniform diameters and substantially uniform wall thickness and the walls of the microspheres have substantially uniform void content, i.e., interconnecting voids, and have substantially uniform distribution of interconnecting voids. The interconnecting voids in the walls of the microspheres are continuous and extend from the outer wall surface of the microsphere to the inner wall surface of the microsphere.The microsphere catalysts are prepared by coating or impregnating the hollow porous microspheres with a catalyst or by applying a catalyst support to the microspheres and then coating or impregnating the microspheres and catalyst support with a catalyst.Type: GrantFiled: July 30, 1987Date of Patent: December 27, 1988Inventor: Leonard B. Torobin
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Patent number: 4791084Abstract: A cracking catalyst for hydrocarbons with superior selectivity to gasoline production and greater metals tolerance comprising a porous inorganic oxide matrix composited with a crystalline aluminosilicate zeolite and a phosphorus-containing alumina in the form of small lumps.Type: GrantFiled: June 8, 1987Date of Patent: December 13, 1988Assignee: Catalysts & Chemicals Industries Co., Ltd.Inventors: Goro Sato, Masamitsu Ogata, Takanori Ida, Tatsuo Masuda
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Patent number: 4791083Abstract: Cracking catalysts and their use in cracking processes are disclosed. The cracking catalysts are prepared using novel non-zeolitic molecular sieves and, optionally, traditional zeolitic aluminosilicate cracking components.Type: GrantFiled: June 15, 1987Date of Patent: December 13, 1988Assignee: Union Carbide CorporationInventors: Regis J. Pellet, Peter K. Coughlin, Mark T. Staniulis, Gary N. Long, Jule A. Rabo
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Patent number: 4791082Abstract: There are prepared zeolite molded articles which also contain alkali silicate and/or alkaline earth silicate and mineral fibers and/or carbon fibers in addition to the zeolite.Type: GrantFiled: October 16, 1987Date of Patent: December 13, 1988Assignee: Degussa AGInventors: Jurgen Dorr, Peter Kleinschmit, Reinhard Klingel, Reinhard Manner
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Patent number: 4781815Abstract: Catalytic cracking catalysts, the process of their preparation and the process of their use. The cracking catalyst comprises a zeolite having a mole ratio of oxides in the dehydrated state of (0.85-1.1) M.sub.2/n O:Al.sub.2 O.sub.3 :xSiO.sub.2 wherein "M" is a cation having a valence of "n", "x" has a value greater than 6.0, has a x-ray powder diffraction pattern having at least the d-spacings of Table A, has extraneous silicon atoms in the crystal lattice in the form of framework SiO.sub.4 tetrahedra and has been thermally treated and/or cation exchanged with a multivalent cation. The catalyst of the instant invention are unique in the fact that the zeolitic aluminosilicate has less than 1.2 weight percent Na.sub.2 O and such is achieved without the requirement of a pre-calcination step.Type: GrantFiled: April 27, 1987Date of Patent: November 1, 1988Assignee: Union Carbide CorporationInventors: Regis J. Pellet, Donald F. Best, Gary N. Long, Jule A. Rabo, Edward T. Wolynic
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Patent number: 4778666Abstract: A crystallization process employing microwave energy is described. The process is especially useful in the manufacture of porous crystalline materials.Type: GrantFiled: December 4, 1986Date of Patent: October 18, 1988Assignee: Mobil Oil CorporationInventors: Pochen Chu, Francis G. Dwyer, James C. Vartuli
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Patent number: 4776946Abstract: A novel siliceous crystalline composition of matter further comprising one or more metals is prepared by admixing a basic silica salt and a dissolved metal salt in the presence of a quarternary ammonium ion and subsequently heating under pressurized conditions. This novel composition of matter is useful as a catalyst for oxidation, alkylation, disproportionation, synthesis gas conversion, hydrocracking, and hydrodewaxing.Type: GrantFiled: May 1, 1987Date of Patent: October 11, 1988Assignee: Union Oil Company of CaliforniaInventor: Eric L. Moorehead
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Patent number: 4767733Abstract: This invention relates to a new and useful amorphous, solid, combination refractory composition and to its synthesis. The new composition is an x-ray amorphous rare earth aluminum phosphorus oxide having high surface area and unique pore size distribution. The composition is useful as a catalyst support and provides improvement over prior art supports such as alumina or aluminum phosphate for certain catalytic applications.Type: GrantFiled: May 18, 1987Date of Patent: August 30, 1988Assignee: Mobil Oil CorporationInventors: Arthur W. Chester, Garry W. Kirker
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Patent number: 4760044Abstract: This invention relates to a catalytic composite comprising a mixture of a primary refractory inorganic oxide having dispersed thereon at least one first active component selected from the group consisting of rare earth oxides and a secondary support consisting of zirconia, titania or cerium oxide having dispersed thereon at least one second active component selected from the group consisting of metals which form a stable sulfide said mixture having at least one main catalytic metal selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium deposited thereon. This invention also relates to a method of manufacturing said catalytic composite. Finally a method to minimize the formation of H.sub.2 S when automotive exhaust is contacted with a catalytic composite is also claimed.Type: GrantFiled: June 15, 1987Date of Patent: July 26, 1988Assignee: Allied-Signal Inc.Inventors: George C. Joy, III, George R. Lester, Richard E. Marinangeli
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Patent number: 4757041Abstract: Heavy oils are simultaneously subjected to hydrocracking and dewaxing using a catalyst comprising zeolite beta and an X or Y or other faujasite zeolite together with a hydrogenation component. The process is able to effect a bulk conversion of the oil while, at the same time, yielding a low pour point product.Type: GrantFiled: December 16, 1986Date of Patent: July 12, 1988Assignee: Mobil Oil CorporationInventors: Stephen M. Oleck, Robert C. Wilson, Jr
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Patent number: 4749672Abstract: Catalysts which comprise or contain caustic leached spinel/mullite are found to possess a particularly high activity and stability for the catalytic conversion of hydrocarbons.Type: GrantFiled: November 27, 1985Date of Patent: June 7, 1988Assignee: W. R. Grace & Co.Inventors: Roger J. Lussier, George J. Surland
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Patent number: 4749671Abstract: An exhaust gas cleaning catalyst composed of a refractory three-dimensional structure and a catalytically active substance supported thereon. That surface or part of the catalyst which makes contact with an exhaust gas is formed of numerous irregularly arranged protrusions composed of a refractory inorganic powder having a particle diameter of 5 to 300 micrometers or a mixture of it with refractory inorganic fibers and the catalytically active substance supported on the protrusions.Type: GrantFiled: July 1, 1986Date of Patent: June 7, 1988Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Koichi Saito, Kenji Ueda, Yasuo Ikeda
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Patent number: 4744919Abstract: A particulate aerosol tracer which comprises a particulate carrier of sheet silicate composition having a particle size up to one micron, and a cationic dopant chemically absorbed in solid solution in the carrier. The carrier is preferably selected from the group consisting of natural mineral clays such as bentonite, and the dopant is selected from the group consisting of rare earth elements and transition elements. The tracers are dispersed by forming an aqueous salt solution with the dopant present as cations, dispersing the carriers in the solution, and then atomizing the solution under heat sufficient to superheat the solution droplets at a level sufficient to prevent reagglomeration of the carrier particles.Type: GrantFiled: September 12, 1986Date of Patent: May 17, 1988Assignee: KMS Fusion, Inc.Inventor: Thomas P. O'Holleran
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Patent number: 4735928Abstract: Process for hydrocracking a crude oil feed, hydrocracking catalyst employed therein and the process for its preparation. The instant invention employs new aluminosilicate zeolite catalysts derived from a new zeolites denominated "LZ-210" which provide hydrocracking catalysts which demonstrate improved activity in first and/or second stage operation.Type: GrantFiled: August 12, 1985Date of Patent: April 5, 1988Assignee: Union Carbide CorporationInventors: Donald F. Best, Gary N. Long, Regis J. Pellet, Jule A. Rabo, Edward T. Wolynic
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Patent number: 4711864Abstract: Catalytic cracking catalysts, the process of their preparation and the process of their use.Type: GrantFiled: April 11, 1985Date of Patent: December 8, 1987Assignee: Union Carbide CorporationInventors: Regis J. Pellet, Richard J. Hinchey
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Patent number: 4701431Abstract: A rare earth stabilized aluminum deficient zeolite having the structure of faujasite is provided. The zeolite is produced by contacting a Y-type zeolite with a dealuminating agent to remove aluminum from the crystal structure of the zeolite and ion exchanging the zeolite with a specified amount of rare earth metal cations to stabilize the aluminum deficient zeolite.Type: GrantFiled: April 10, 1986Date of Patent: October 20, 1987Assignee: Exxon Research and Engineering CompanyInventor: Lloyd A. Pine
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Patent number: 4698449Abstract: This invention relates to a novel crystalline silicate useful as a catalyst for various organic reactions such as polymerization of organic compounds, alkylation, isomerization, disproportionation and the like, which has a chemical composition represented by the general formula in the terms of mole ratios of oxides under dehydrated state,(0.1-2)R.sub.2/n O. [aLa.sub.2 O.sub.3.bCe.sub.2 O.sub.3 ].ySiO.sub.2in which R is at least one mono- or divalent cation, n is the valence of R, M is at least one trivalent transition metal ion and/or aluminum ion, and a+b=1, a.gtoreq.0, b.gtoreq.0, and y.gtoreq.12.Type: GrantFiled: July 31, 1986Date of Patent: October 6, 1987Assignee: Research Association for Petroleum Alternatives DevelopmentInventors: Tetsuya Imai, Hiroshi Fujita, Minoru Koikeda, Takashi Suzuki
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Patent number: 4687754Abstract: Catalytic cracking catalysts, the process of their preparation and the process of their use. The cracking catalyst comprises a zeolite having a mole ratio of oxides in the dehydrated state of (0.85-1.1) M.sub.2/n O:Al.sub.2 O.sub.3 :xSiO.sub.2 wherein "M" is a cation having a valence of "n", "x" has a value greater than 6.0, has a x-ray powder diffraction pattern having at least the d-spacings of Table A, has extraneous silicon atoms in the crystal lattice in the form of framework SiO.sub.4 tetrahedra and has been thermally treated and/or cation exchanged with a multivalent cation. The catalyst of the instant invention are unique in the fact that the zeolitic aluminosilicate has less than 1.2 weight percent Na.sub.2 O and such is achieved without the requirement of a pre-calcination step.Type: GrantFiled: October 3, 1984Date of Patent: August 18, 1987Assignee: Union Carbide CorporationInventors: Regis J. Pellet, Donald F. Best, Gary N. Long, Jule A. Rabo, Edward T. Wolynic
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Patent number: 4681747Abstract: A molecular sieving metallosilicate is disclosed which comprises a complex represented in terms of mole ratios of oxides by the formula: ##STR1## wherein A is an ammonium, alkyl ammonium, alkyl phosphonium or alkyl arsonium ion; D is an alkali or alkaline earth metal ion or a mixture of two or more thereof; E is selected from the group consisting of Al, B, Mo, W, Fe, or a mixture of two or more thereof; M is a tetravalent metal selected from the Lanthanide or Actinide series; a is a number ranging from zero to about 25; b is a number ranging from zero to about 1.5; c is a number ranging from zero to about 0.3; d is a number ranging from about 20 to about 500; e is a number ranging from zero to about 200. The X-ray diffraction pattern for these metallosilicates indicates a ZSM-5 like crystalline structure. A method for making these metallosilicates, and a method for dehydrating and reforming methanol using these metallosilicates are disclosed.Type: GrantFiled: November 16, 1984Date of Patent: July 21, 1987Assignee: The Standard Oil CompanyInventors: Michael J. Desmond, Janie K. Currie, Frederick A. Pesa
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Patent number: 4678765Abstract: Catalytic cracking catalysts, the process of their preparation and the process of their use. Cracking catalysts are disclosed for improving the octane number of gasoline products. The catalysts comprise a zeolitic aluminosilicate having a mole ratio of oxides in the dehydrated state of(0.85-1.1) M.sub.2/n O: Al.sub.2 O.sub.3 : xSiO.sub.2wherein M is a cation having a valence of "n" and "x" has a value greater than 6.0 to about 11.0; has an x-ray powder diffraction pattern having at least the d-spacings of Table A; has extraneous silicon atoms in the crystal lattice in the form of framework SiO.sub.4 tetrahedra; has between greater than zero to less than 5.0 percent by weight, expressed as the oxide, of at least one rare earth cation selected from the group consisting of cerium, lanthanum, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium; and less than 1.2 weight percent Na.sub.Type: GrantFiled: October 3, 1984Date of Patent: July 7, 1987Assignee: Union Carbide CorporationInventors: Robert L. Chiang, Mark T. Staniulis