Tin Containing Patents (Class 502/310)
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Patent number: 6632772Abstract: A method of coating a catalyst to a support for use in acrolein oxidation reaction. Metallic salt components of the catalyst including molybdate, vanadate and tungstate are dissolved in a liquid to form a suspension of particles of the catalyst. The precipitation of the catalyst particles is controlled by homogenizing the catalyst particles suspended in the liquid. The phase separation between the catalyst particles and the liquid can be substantially slowed down by the homogenization. Then the catalyst is coated on an inert support by applying the suspension of the catalyst particles to the support. In the suspension, the total weight of water is about 0.8 to about 5 times of the total weight of the metallic salts in the catalyst. This method of preparing suspension minimizes the amount of the liquid required to dissolve the metallic salts, which reduces the amount of time and energy to be used in evaporating the liquid from the suspension.Type: GrantFiled: December 22, 2000Date of Patent: October 14, 2003Assignee: LG Chemical, Ltd.Inventors: Won-Ho Lee, Kyung-Hwa Kang, Dong-Hyun Ko, Young-Chang Byun
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Publication number: 20030166465Abstract: Novel sorbent systems for the desulfurization of cracked-gasoline and diesel fuels are provided which are comprised of a bimetallic promotor on a particulate support such as that formed of zinc oxide and an inorganic or organic carrier. Such bimetallic promotors are formed of at least two metals of the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony and vanadium with the valence of same being reduced, preferably to zero. Processes for the production of such sorbents are provided wherein the sorbent is prepared from impregnated particulate supports or admixed to the support composite prior to particulation, drying, and calcination. Further disclosed is the use of such novel sorbents in the desulfurization of cracked-gasoline and diesel fuels whereby there is achieved not only removal of sulfur but also an increase in the olefin retention in the desulfurized product.Type: ApplicationFiled: January 21, 2003Publication date: September 4, 2003Inventor: Gyanesh P. Khare
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Patent number: 6514902Abstract: Disclosed is a process for producing an oxide catalyst for use in producing (meth)acrylonitrile from propane or isobutane by ammoxidation in the gaseous phase, the oxide catalyst comprising a compound oxide containing Mo, V and Sb as essential component elements, which process comprises subjecting a solution or slurry, in water and/or an alcohol, of a raw-material mixture comprising a Mo compound, a V compound and an Sb compound as essential raw materials to a specific oxidation treatment using an oxidizing gas and/or an oxidizing liquid before subjecting the solution or slurry to drying and subsequent calcination. Further, also disclosed is a process for producing a base-treated oxide catalyst by treating the above-mentioned oxide catalyst with an aqueous basic solution.Type: GrantFiled: November 3, 2000Date of Patent: February 4, 2003Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Tomoya Inoue, Hiroshi Ishida
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Publication number: 20030017944Abstract: Disclosed is a process for producing an oxide catalyst comprising, as component elements, molybdenum (Mo), vanadium (V), at least one element selected from the group consisting of the two elements of antimony (Sb) and tellurium (Te), and niobium (Nb), wherein the process comprises providing an aqueous raw material mixture containing compounds of the component elements of the oxide catalyst, and drying the aqueous raw material mixture, followed by calcination, and wherein, in the aqueous raw material mixture, at least a part of the niobium compound as one of the compounds of the component elements is present in the form of a complex thereof with a complexing agent comprising a compound having a hydroxyl group bonded to an oxygen atom or a carbon atom. Also disclosed is a process for producing (meth)acrylonitrile or (meth)acrylic acid, which comprises performing the ammoxidation or oxidation of propane or isobutane in the gaseous phase in the presence of the oxide catalyst.Type: ApplicationFiled: September 18, 2001Publication date: January 23, 2003Inventors: Hidenori Hinago, Hiroyuki Yano
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Patent number: 6504053Abstract: A catalyst comprising a promoted 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: GrantFiled: May 14, 2002Date of Patent: January 7, 2003Assignee: Rohm and Haas CompanyInventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song, Dominique Hung Nhu Le, Elsie Mae Vickery
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Patent number: 6475950Abstract: A chromium catalyst is disclosed for use in dehydrogenation and dehydrocyclization processes.Type: GrantFiled: March 15, 2001Date of Patent: November 5, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Kostantinos Kourtakis, Leo E. Manzer
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Patent number: 6451199Abstract: For transforming hydrocarbons into aromatic compounds, the reaction is conducted on a homogeneous bed of catalyst particles, said catalyst comprising at least one amorphous matrix, at least one noble metal, at least two additional metals M1 and M2 and at least one halogen, and in which, for a catalyst particle, Cpt is the local concentration of platinum; CM1 is the local concentration of additional metal M1; CM2 is the local concentration of additional metal M2; in which the standard deviation of the distribution of the local ratios of the concentrations of the additional metals, CM1/CM2, measured along the particle diameter, is better than 25% relative.Type: GrantFiled: February 8, 2000Date of Patent: September 17, 2002Assignee: Institut Francais du PetroleInventors: Hervé Cauffriez, Fabienne Le Peltier, Elisabeth Rosenberg
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Patent number: 6432870Abstract: A process for preparing a metal oxide catalyst for acrylic acid production which comprises calcining a metal compound mixture at 400° C. or higher to prepare a metal oxide powder comprising Mo, V, Sb, and at least one element selected from the group consisting of Nb and Ta, and supporting a compound comprising at least one element selected from the group consisting of Sb, Tl, Se, As, Pb, Sn, Ag, Cu, Ru, and Rh on the metal oxide powder, and a process for producing acrylic acid by gas phase oxidation of propane using the catalyst.Type: GrantFiled: May 24, 2000Date of Patent: August 13, 2002Assignee: Toagosei Co., Ltd.Inventors: Xinlin Tu, Mamoru Takahashi, Hiroshi Niizuma
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Publication number: 20020103077Abstract: Complex oxide catalysts represented by the formula,Type: ApplicationFiled: February 14, 2002Publication date: August 1, 2002Inventors: Naomasa Kimura, Michio Tanimoto, Hideo Onodera
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Patent number: 6414209Abstract: The invention relates to a calcinated catalyst for converting paraffinic hydrocarbon into corresponding olefin through dehydrogenation. The catalyst is an oxidic, heat-stable carrier material and contains a catalytic active constituent, which is applied on the carrier material and has the following composition (in wt. % in relation to the entire weight of the catalyst): a) 0.2 to 2.0% of at least one element of the groups Pt and Ir and, acting as a promoter, a combination of elements from the six following groups of substances: b) 0.2 to 5.0% of at least one of the following elements Ge, Sn, Pb, Ga, In, Tl; c) 0.1 to 5.0% of at least one of the following elements Li, Na, K, Rb, Cs, Fr; d) 0.2 to 5.0% of at least one of the following elements Fe, Co, Ni, Pd; e) 1.0 to 5.0% P; f) 0.2 to 5.0% of at least one of the following elements Be, Mg, Ca, Sr, Ba, Ra and lanthanides and g) 0.1 to 2.0% Cl.Type: GrantFiled: September 25, 2000Date of Patent: July 2, 2002Assignees: Mannesman AG, K.T.I. Group B.V.Inventors: Mordechay Herskowitz, Shimson Kogan
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Publication number: 20020077514Abstract: Catalysts for the fluid-bed hydrodechlorination of carbon tetrachloride to chloroform having high catalytic stability and comprising platinum supported on microspheroidal gamma alumina, characterized in that the platinum is in the form of particles dispersed throughout the mass of the support.Type: ApplicationFiled: October 9, 2001Publication date: June 20, 2002Inventors: Michele Rossi, Carlo Rubini, Antonia Pasquale, Luigi Cavalli
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Patent number: 6407280Abstract: A catalyst comprising a promoted 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: GrantFiled: August 10, 2001Date of Patent: June 18, 2002Assignee: Rohm and Haas CompanyInventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song, Dominique Hung Nhu Le, Elsie Mae Vickery
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Publication number: 20020072628Abstract: A process for preparing a metal oxide catalyst for acrylic acid production which comprises calcining a metal compound mixture at 400° C. or higher to prepare a metal oxide powder comprising Mo, V, Sb, and at least one element selected from the group consisting of Nb and Ta, and supporting a compound comprising at least one element selected from the group consisting of Sb, Tl, Se, As, Pb, Sn, Ag, Cu, Ru, and Rh on the metal oxide powder, and a process for producing acrylic acid by gas phase oxidation of propane using the catalyst.Type: ApplicationFiled: October 30, 2001Publication date: June 13, 2002Applicant: TOAGOSEI CO., LTD.Inventors: Xinlin Tu, Mamoru Takahashi, Hiroshi Niizuma
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Patent number: 6403525Abstract: A catalyst comprising an in promoted 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 nitrileType: GrantFiled: August 10, 2001Date of Patent: June 11, 2002Assignee: Rohm and Haas CompanyInventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Elsie Mae Vickery
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Publication number: 20020062038Abstract: A catalyst comprising a promoted 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: ApplicationFiled: August 10, 2001Publication date: May 23, 2002Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
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Patent number: 6383978Abstract: A promoted multi-metal oxide catalyst 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: GrantFiled: August 9, 2001Date of Patent: May 7, 2002Assignee: Rohm and Haas CompanyInventor: Leonard Edward Bogan, Jr.
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Patent number: 6346228Abstract: The present invention relates to a novel hydrophobic multicomponent catalyst useful in the direct oxidation of hydrogen to hydrogen peroxide and to a method for the preparation of such catalyst. More specifically, this invention relates to a novel hydrophobic muticomponent catalyst comprising a hydrophobic polymer membrane deposited on a Pd containing acidic catalyst, useful for the direct oxidation of hydrogen by oxygen to hydrogen peroxide, an a method for preparing the same.Type: GrantFiled: January 19, 2000Date of Patent: February 12, 2002Assignee: Council of Scientific and Industrial ResearchInventors: Vasant Ramchandra Choudhary, Subhash Dwarkanath Sansare, Abaji Govind Gaikwad
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Publication number: 20020009407Abstract: Reticulated ceramic monolithic catalysts and non-poisoning catalyst supports comprising one or more metal oxides of chromium, cobalt, nickel, an alkaline earth, a rare earth, or another sinterable metal oxide that are active in any of various chemical oxidation reactions are disclosed. Methods of making the new reticulated ceramic structures comprising impregnating an organic foam or other pore-templating material are also disclosed. Processes for the catalytic conversion of light hydrocarbons to products comprising carbon monoxide and hydrogen employing reticulated ceramic catalysts are described.Type: ApplicationFiled: February 16, 2001Publication date: January 24, 2002Inventors: Kostantinos Kourtakis, Anne M. Gaffney, Lin Wang
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Patent number: 6337129Abstract: Disclosed is a member having an antifouling surface on which the so-called “stains,” such as deposits and contaminants, are less likely to be deposited. The surface of the member has both a hydrophobic portion, and a hydrophilic portion induced by a photocatalyst, the hydrophobic portion and the hydrophilic portion being present in a microscopically dispersed and exposed state on the surface. More specifically, according to a first aspect of the present invention, there is provided a member comprising: a substrate; and a surface layer provided on the substrate, the surface layer comprising a photocatalytic oxide, a silicone resin or silica, and a water-repellent fluororesin, the silicone or silica and the water-repellent fluororesin being present in a microscopically dispersed and exposed state on the outermost surface of the surface layer.Type: GrantFiled: November 30, 1998Date of Patent: January 8, 2002Assignee: Toto Ltd.Inventors: Toshiya Watanabe, Makoto Hayakawa, Mitsuyoshi Machida
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Publication number: 20010046942Abstract: A chromium catalyst is disclosed for use in dehydrogenation and dehydrocyclization processes.Type: ApplicationFiled: March 15, 2001Publication date: November 29, 2001Inventors: Kostantinos Kourtakis, Leo E. Manzer
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Patent number: 6284215Abstract: A process for producing positive electrode active material includes feeding an aqueous nickel salt solution, aqueous solutions of different kinds of metals, aqueous solution containing ammonium ions and aqueous alkali solution each independently and simultaneously into a reaction vessel such that the amount of alkali metal is 1.9-2.3 moles relative to 1 mole of the total amount of nickel and different kinds of metals and the amount of ammonium ions is 2 moles or more relative to 1 mole of the total amount of nickel and different kinds of metals, the pH in the vessel is 11-13, the temperature in the vessel is 30-60° C. and the average residence time is 20-50 hours.Type: GrantFiled: April 27, 2000Date of Patent: September 4, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Sakamoto, Hidekatsu Izumi, Hirokazu Kimiya, Yoichi Izumi, Isao Matsumoto
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Patent number: 6274533Abstract: Novel sorbent systems for the desulfurization of cracked-gasoline are provided which are comprised of a bimetallic promotor on a particulate support such as that formed of zinc oxide and an inorganic or organic carrier. Such bimetallic promoters are formed of at least two metals of the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony and vanadium with the valence of same being reduced, preferably to zero. Processes for the production of such sorbents are provided wherein the sorbent is prepared from impregnated particulate supports or admixed to the support composite prior to particulation, drying, and calcination. Further disclosed is the use of such novel sorbents in the desulfurization of cracked-gasoline whereby there is achieved not only removal of sulfur but also an increase in the olefin retention in the desulfurized product. Such sorbents can also be utilized for the treatment of other sulfur-containing streams such as diesel fuels.Type: GrantFiled: December 14, 1999Date of Patent: August 14, 2001Assignee: Phillips Petroleum CompanyInventor: Gyanesh P. Khare
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Patent number: 6197719Abstract: A process for the activation of perovskite-type oxide by increasing its surface area and/or catalytic activity, which comprises: (i) treating perovskite-type oxide hydrothermally with liquid water with water/perovskite-type oxide ratio of above 0.1 at temperature of 50°-500° C. and period of 0.1-100 h under autogeneous pressure and drying the resulting mass or treating perovskite-type oxide hydrothermally with water vapors with or without any inert gas at space velocity of above 100 h−1, temperature of 200°-1000° C. and a period of 0.1-100 h and (ii) calcining the hydrothermally treated perovskite-type oxide in air or inert gas or under vacuum at temperature of 300°-1000° C. for a period of 0.1-100 h.Type: GrantFiled: April 1, 1999Date of Patent: March 6, 2001Assignee: Council of Scientific and Industrial ResearchInventors: Vasant Ramchandra Choudhary, Subhabrata Banerjee
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Patent number: 6177382Abstract: In a process for preparing spinel extrudates by extruding molding compositions comprising spinel powder with or without extrusion assistants, stabilizers, shrinkage reducers, pore-formers or mixtures thereof subsequent drying and calcination of the extrudates, the molding composition further comprises aluminum oxides or aluminum oxide hydrates and metal nitrates.Type: GrantFiled: March 25, 1999Date of Patent: January 23, 2001Assignee: BASF AktiengesellschaftInventors: Michael Hesse, Otto Kumberger
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Patent number: 6177380Abstract: A carbon supported solid catalyst suitable for the vapor phase carbonylation of lower aliphatic alcohols, ethers, ester, and ester-alcohol mixtures, and desirably, methanol, to produce carboxylic acid, esters and mixtures thereof. The solid supported catalyst includes an effective amount of iridium and gold associated with a solid carbon support, and a halogen promoter.Type: GrantFiled: May 22, 2000Date of Patent: January 23, 2001Assignee: Eastman Chemical CompanyInventors: Joseph Robert Zoeller, Andy Hugh Singleton, Gerald Charles Tustin, Donald Lee Carver
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Patent number: 6129902Abstract: A process for producing positive electrode active material includes feeding an aqueous nickel salt solution, aqueous solutions of different kinds of metals, aqueous solution containing ammonium ions and aqueous alkali solution each independently and simultaneously into a reaction vessel such that the amount of alkali metal is 1.9-2.3 moles relative to 1 mole of the total amount of nickel and different kinds of metals and the amount of ammonium ions is 2 moles or more relative to 1 mole of the total amount of nickel and different kinds of metals, the pH in the vessel is 11-13, the temperature in the vessel is 30-60.degree. C. and the average residence time is 20-50 hours.Type: GrantFiled: February 2, 1998Date of Patent: October 10, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Sakamoto, Hidekatsu Izumi, Hirokazu Kimiya, Yoichi Izumi, Isao Matsumoto
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Patent number: 6124232Abstract: There is provided a method for preparing an acidic solid oxide having a reduced particle density, where the acidic solid oxide comprises a Group IVB metal oxide modified with an anion or oxyanion of a Group VIB metal. An example of this acidic solid oxide is zirconia modified with tungstate. The acidic solid oxide having a reduced particle density is prepared by coprecipitating the Group IVB metal oxide along with the anion or oxyanion of the Group VIB metal in the presence of a salt. This acidic solid oxide is particularly effective as a paraffin isomerization catalyst.Type: GrantFiled: July 20, 1998Date of Patent: September 26, 2000Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Charles T. Kresge, Jose G. Santiesteban, James C. Vartuli
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Patent number: 6072070Abstract: Mixed oxide vanadium/antimony/titanium ammoxidation catalysts, particularly suited for the ammoxidation of alkanes and exhibiting X-ray diffraction spectra which are characteristic of a crystallographic phase of rutile TiO.sub.2, are prepared by (a) dissolving respective soluble compounds of vanadium, of antimony and of titanium in at least one saturated alcohol, (b) contacting the alcoholic solution thus obtained with water and precipitating the mixed oxide therefrom, and (c) separating and calcining the mixed oxide thus precipitated.Type: GrantFiled: May 8, 1997Date of Patent: June 6, 2000Assignee: R.P. Fiber & Resin IntermediatesInventors: Stefania Albonetti, Gilbert Blanchard, Paolo Burattin, Fabrizio Cavani, Ferruccio Trifiro
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Patent number: 6037295Abstract: The subject invention relates to a catalyst comprises 1-75% of iron oxide, 1-10% of titanium metal oxide and the balance being attapulgate useful for the preparation of alkylated aromatic amines.Type: GrantFiled: October 8, 1998Date of Patent: March 14, 2000Assignee: Council of Scientific & Industrial ResearchInventors: Bankupalli Satyavathi, Akash Narhar Rao Patwari, Uday Triambakraj Bhalerao
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Patent number: 5994258Abstract: Catalytic system for dehydrogenating ethylbenzene to styrene, containing chromium oxide, tin oxide, at least one oxide of an alkaline metal (M) and an alumina carrier, in delta or theta phase or in a mixture of delta+theta or theta+alpha or delta+theta+alpha phases, modified with silica, and characterized in that:the chromium, expressed as Cr.sub.2 O.sub.3, is in a quantity of between 6 and 30% by weight;the tin, expressed as SnO, is in a quantity of between 0.1 and 3.5% by weight;the alkaline metal, expressed as M.sub.2 O, is in a quantity of between 0.4 and 3% by weight,the silica is in a quantity of between 0.08 and 3% by weight, the complement to 100 being alumina.Type: GrantFiled: June 19, 1998Date of Patent: November 30, 1999Assignee: Snamprogetti S.p.A.Inventors: Franco Buonomo, Domenico Sanfilippo, Rodolfo Iezzi, Emilio Micheli
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Patent number: 5959143Abstract: A catalyst having a high activity and mechanical strength and a process for preparing it are provided. The catalyst comprises molybdenum, vanadium, copper and antimony as essential components. The peak in X-ray diffractometry of the catalytically active component with Cu--K.alpha. line is largest at 22.2.+-.0.30.degree. (2.theta.).Type: GrantFiled: October 30, 1996Date of Patent: September 28, 1999Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hideki Sugi, Fumio Sakai, Koichi Wada, Kazuo Shiraishi, Toshitake Kojima, Atsushi Umejima, Yoshimasa Seo
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Patent number: 5910608Abstract: A coated catalyst which consists of a hollow cylindrical carrier and a catalytically active oxide material applied to the outer surface of the carrier, the applied catalytically active oxide material being applied in a coat thickness of from 10 to 1000 .mu.m, and having a specific catalytic surface area of from 20 to 30 m.sup.2 /g and an abrasion of <10, preferably <5, particularly preferably <0,5, % by weight in the turntable abrasion test. The catalyst is useful in the preparation of acrylic acid by the gas phase oxidation of acroleins.Type: GrantFiled: June 4, 1997Date of Patent: June 8, 1999Assignee: BASF AktiengesellschaftInventors: Andreas Tenten, Peter Weidlich, Gerd Linden
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Patent number: 5854170Abstract: There is provided a method for preparing an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. An example of this acidic solid is zirconia, modified with tungstate. This modified solid oxide may be used as a catalyst, for example, to isomerize C.sub.4 to C.sub.8 paraffins. The modified solid oxide is treated with hydrogen at elevated temperatures to enhance catalytic properties of the material.Type: GrantFiled: September 30, 1997Date of Patent: December 29, 1998Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Frank T. DiGuiseppi, Scott Han, Jose G. Santiesteban, David L. Stern
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Patent number: 5808143Abstract: Catalysts of the formula I?A.sub.a B.sub.b O.sub.x !.sub.p ?C.sub.c D.sub.d Fe.sub.e Co.sub.f E.sub.i F.sub.j O.sub.y !.sub.q I,whereA is bismuth, tellurium, antimony, tin and/or copper,B is molybdenum and/or tungsten,C is an alkali metal, thallium and/or samarium,D is an alkaline earth metal, nickel, copper, cobalt, manganese, zinc, tin, cerium, chromium, cadmium, molybdenum, bismuth and/or mercury,E is phosphorus, arsenic, boron and/or antimony,F is a rare-earth metal, vanadium and/or uranium,a is from 0.01 to 8,b is from 0.1 to 30,c is from 0 to 4,d is from 0 to 20,e is from 0 to 20,f is from 0 to 20,i is from 0 to 6,j is from 0 to 15,x and y are numbers determined by the valency and frequency of the elements other than oxygen in I, and p and q are numbers whose ratio p/q is in the range from 0.001 to 0.Type: GrantFiled: March 22, 1996Date of Patent: September 15, 1998Assignee: BASF AktiengesellschaftInventors: Lothar Karrer, Hans-Peter Neumann, Hans-Dieter Eichhorn, Robin Stuart Jarret
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Patent number: 5780382Abstract: There is provided a method for preparing an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. An example of this acidic solid is zirconia, modified with tungstate. This modified solid oxide may be used as a catalyst, for example, to isomerize C.sub.4 to C.sub.8 paraffins. The method for preparing this acidic solid involves contacting a hydrated oxide of a Group IVB metal under hydrothermal conditions, such as reflux conditions, prior to contact of the hydrated oxide with an aqueous solution comprising a source of an oxyanion of a Group VIB metal.Type: GrantFiled: July 31, 1995Date of Patent: July 14, 1998Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Frank T. DiGuiseppi, Jose G. Santiesteban
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Patent number: 5675057Abstract: Disclosed is a process comprising the heat treatment of certain V and Sb-containing catalysts at a lower temperature than the previous calcination temperature of the base catalyst to improve catalytic performance; the catalysts resulting from such process; and certain oxidation and ammoxidation reactions in the presence of such a catalyst.Type: GrantFiled: June 7, 1995Date of Patent: October 7, 1997Assignee: BP America Inc.Inventors: Noel L. Bremer, Linda C. Brazdil, James F. Brazdil, Fernando A. P. Cavalcanti
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Patent number: 5637545Abstract: This invention relates to novel crystalline metallo manganese oxides that has the hollandite structure. The composition is represented by the formulaA.sub.y Mn.sub.8-x M.sub.x O.sub.16where A is a templating agent such as potassium, ammonium, and y varies from about 0.5 to about 2.0, M is a metal such as chromium, vanadium, gallium, antimony and x varies from about 0.01 to about 4.0. These oxides have a three-dimensional structure with manganese and the M metals forming the framework. Finally, these novel oxides are capable of catalyzing hydrocarbon conversion processes such as oxidation and oxidative dehydrogenation.Type: GrantFiled: June 6, 1995Date of Patent: June 10, 1997Assignee: UOPInventor: Gregory J. Lewis
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Patent number: 5585083Abstract: Disclosed is a process for oxidizing formaldehyde to carbon dioxide and water without the addition of energy. A mixture of formaldehyde and an oxidizing agent (e.g., ambient air containing formaldehyde) is exposed to a catalyst which includes a noble metal dispersed on a metal oxide which possesses more than one oxidation state. Especially good results are obtained when the noble metal is platinum, and the metal oxide which possesses more than one oxidation state is tin oxide. A promoter (i.e., a small amount of an oxide of a transition series metal) may be used in association with the tin oxide to provide very beneficial results.Type: GrantFiled: March 30, 1995Date of Patent: December 17, 1996Assignees: The United States as represented by the Administrator of the National Aeronautics and Space Administration, Rochester Gas & Electric Corp.Inventors: Erik J. Kielin, Kenneth G. Brown, Christine M. D'Ambrosia
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Patent number: 5569770Abstract: The present invention relates to a method for the production of N-vinyl-2-pyrrolidone by gas-phase reaction at atmospheric pressure. The method is characterized in that a gas-phase reaction is conducted by using N-.beta.-Hydroxyethyl-2-Pyrrolidones serving as raw materials, at a temperature of 300.degree.-450.degree. C., a space velocity of 500-4500 hr.sup.-1 in the presence of a mixed oxide of group IV elements, or an oxide of group IV elements, which has been modified by group I or group II elements.Type: GrantFiled: January 31, 1996Date of Patent: October 29, 1996Assignee: Industrial Technology Research InstituteInventors: Pine-Sci Kuo, Shiao-Jung Chu, Chu-Chang Dai, Hsi-Yen Hsu, Ching-Tang Lin, Yi-Yun Lin
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Patent number: 5491258Abstract: For providing a molded catalyst or a supported catalyst which has an excellent mechanical strength and is intended for producing methacrolein and methacrylic acid from isobutylene or tertiary butanol, the surface of a molded catalyst or a supported catalyst which contains molybdenum, bismuth and iron is coated with one or more highly depolymerizable organic high-molecular weight compounds.When used, the catalyst is packed into a reactor and then heated to remove the organic high-molecular weight compound(s) by depolymerization.Type: GrantFiled: September 12, 1994Date of Patent: February 13, 1996Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Seigo Watanabe, Motomu Ohkita
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Patent number: 5364825Abstract: Multimetal oxide compositions of the formula I[X.sup.1.sub.a X.sup.2.sub.b O.sub.x ].sub.p [X.sup.3.sub.c X.sup.4.sub.d X.sup.5.sub.e X.sup.6.sub.f X.sup.7.sub.g X.sup.2.sub.h O.sub.y ].sub.q(I)whereX.sup.1 is bismuth, tellurium, antimony, tin and/or copper,X.sup.2 is molybdenum and/or tungsten,X.sup.3 is an alkali metal, thallium and/or samarium,X.sup.4 is an alkaline earth metal, nickel, cobalt, copper, manganese, zinc, tin, cadmium and/or mercury,X.sup.5 is iron, chromium, cerium and/or vanadium,X.sup.6 is phosphorus, arsenic, boron and/or antimony,X.sup.7 is a rare-earth metal, titanium, zirconium, niobium, tantalum, rhenium, ruthenium, rhodium, silver, gold, aluminum, gallium, indium, silicon, germanium, lead, thorium and/or uranium,a is from 0.01 to 8,b is from 0.Type: GrantFiled: May 21, 1993Date of Patent: November 15, 1994Assignee: BASF AktiengesellschaftInventors: Hans-Peter Neumann, Hans Martan, Hermann Petersen, Walter Doerflinger
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Patent number: 5283041Abstract: A catalyst is disclosed for treating gas streams containing organic compounds such as halogenated organic compounds. The catalyst is comprised of vanadium oxide, zirconium oxide and at least one oxide of manganese, cerium or cobalt.Also disclosed is a process for treating gas streams using such catalysts.Type: GrantFiled: August 13, 1992Date of Patent: February 1, 1994Assignee: Engelhard CorporationInventors: Pascaline H. Nguyen, Eric W. Stern, Michel Deeba, Patrick L. Burk
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Patent number: 5214016Abstract: Disclosed is a method of making a catalyst containing vanadium antimony and tin in the oxide state which comprises making an aqueous slurry of a mixture of source batch materials comprising compounds of the elements to be included in the final catalyst followed by drying and heat calcining the mixture to an active catalyst, using as the source batch material for tin a stannous salt of a C.sub.1 to C.sub.18 acyclic, monocarboxylic acid containing no ethylenic or acetylenic carbon-to-carbon unsaturation.Type: GrantFiled: April 2, 1992Date of Patent: May 25, 1993Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Ian R. Little, Joseph B. Hazen
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Patent number: 5139988Abstract: A composition which contains as essential components: crystalline iron antimonate and at least one element selected from the group consisting of vanadium, molybdenum, and tungsten; is useful as a catalyst in the oxidation reaction of organic compounds. Also, a process for producing the composition is disclosed.Type: GrantFiled: September 17, 1991Date of Patent: August 18, 1992Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Hiroshi Utsumi, Kenichi Miyaki
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Patent number: 5132269Abstract: An iron-antimony-molybdenum-containing oxide catalyst composition for oxidation reactions, comprising a crystalline iron antimonate having a crystallite size of 100 .ANG. or more, said catalyst being represented by the following empirical formula:Fe.sub.a Sb.sub.b Mo.sub.c L.sub.d K.sub.e M.sub.m N.sub.n Q.sub.q R.sub.r T.sub.t O.sub.Type: GrantFiled: September 9, 1991Date of Patent: July 21, 1992Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Hiroshi Yamamoto, Koichi Mizutani, Kiyoshi Moriya, Kunio Mori
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Patent number: 5089461Abstract: Controlling sulfur oxide emissions from FCC regenerator flue gas by mixing a sulfur sorbent in the circulating inventory and having present in the regeneration zone a chromium/tin sulfur dioxide oxidation promoter.Type: GrantFiled: September 4, 1990Date of Patent: February 18, 1992Assignee: Chevron Research CompanyInventors: William A. Blanton, Jr., Alan W. Klaassen
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Patent number: 5071818Abstract: An improved process of preparing a composition, which is effective as a CO oxidation catalyst and contains (a) a SnO.sub.2 -coated porous ceramic material, (b) Pt and/or Pd and (c) at least one compound of Mn and/or Cr, requires the preparation of component (a) by impregnation of a porous ceramic material (preferably a monolith) with a tin carboxylate solution, followed by drying and calcining (so as to decompose tin carboxyte to tin dioxide).Type: GrantFiled: March 21, 1991Date of Patent: December 10, 1991Assignee: Phillips Petroleum CompanyInventor: John H. Kolts
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Patent number: 5051393Abstract: A method for the catalytic oxidation of carbon monoxide and unburnt hydrocarbon components of vehicle exhaust gas streams is disclosed. The method comprises using as the catalyst a mixed oxide catalyst composition consisting essentially of tin (IV) oxide (SnO.sub.2), chromium (VI) oxide (CrO.sub.3) and copper (II) oxide (CuO) free from platinum and other noble metals or noble metal oxides, and containing an Sn:Cr weight ratio (calculated as SnO.sub.2 :CrO.sub.3) in the range 99:1 to 1:99, and copper (II) oxide (CuO) in an amount of from 0.5 to 100% by weight, based on the combined weight of SnO.sub.2 and CrO.sub.3. The catalyst composition having been prepared by impregnating tin(IV) oxide (SnO.sub.2) with chromium(VI) oxide (CrO.sub.3) and copper oxide (CuO) and calcining the resulting product.Type: GrantFiled: December 8, 1989Date of Patent: September 24, 1991Assignee: TI Corporate Services LimitedInventors: Philip G. Harrison, Peter J. F. Harris
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Patent number: 4946820Abstract: A tin(IV) oxide dispersion is prepared by peptising metastannic acid with amine peptising agent such as n-butylamine or cyclohexylamine. The dispesion may be a sol or an intermediate convertible to a sol, and may include other components such as metal oxides or their precursors, e.g. one or more of a high surface area alumina and transition metal oxides such as copper(II) oxide and chromium (VI) oxide. The dispersion may be converted to a gel and then to a ceramic, optionally after the sol has been contacted with a substrate, for example to produce a catalyst. Further coatings may be applied to produce a catalyst comprising a mixture of tin(IV) oxide and chromium(VI) oxide on the substrate which may be effective as an oxidation catalyst and useful in the treatment of vehicle exhaust emissions.Type: GrantFiled: July 21, 1989Date of Patent: August 7, 1990Assignee: The Secretary of State for United Kingdom Atomic Energy AuthorityInventors: Edward S. Lane, David L. Segal, Donald F. Rush
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Patent number: RE34655Abstract: 2-way and 3-way catalyst compositions comprising tin(IV) oxide (SnO.sub.2) and chromium(VI) oxide (CrO.sub.3) are disclosed for use in catalytic converters for vehicle exhaust gas systems, such catalyst compositions being effective in the catalytic oxidation of carbon monoxide and unburnt hydrocarbons, and in the catalytic reduction of nitrogen oxides contained in the vehicle exhaust.Type: GrantFiled: March 12, 1992Date of Patent: July 5, 1994Assignee: Arvin UK LimitedInventors: Philip G. Harrison, Peter J. F. Harris