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Preparation of methylamines from methanol and ammonia
Patent report chanical strength and is especially useful in selectively separating alcohols.
Manufacture of crystalline, ultralarge-pore oxide materials D.C. Calebro; J. Hen Mobil 0//Corp. U.S. 5,308,602, May 3, 1994; Appl. Oct. 13, 1992 The process involves forming a reaction mixture comprising an amphiphilic compound, e.g., cetyltrimethylammonium compound, a source of /> one oxides, e.g., SiO2, and water, and maintaining the mixture under conditions sufficient to form a crystalline oxide material. The amphiphilic compound/water molecular ratio is <0.004. Upon calcination, the oxide material has an X-ray diffraction pattern having/> one peaks at a position >18 A units d-spacing, with relative intensity 100 and C6H6 adsorption at 25 °C and 50 tort ~>15 g/g anhydrous crystals. The source of SiO2 may be a Na silicate solution.
zeolite with dicarboxylic acid, such as oxalic acid at acid/catalyst volume ratio 1>1:1.
Preparing methylamines T. Kiyoura; K. Terada Mitsu/ Toatsu Chemica/s Inc. Fur. Pat. Appl. 593,086, Apr. 20, 1994; Jpn. Appl. Oct. 16, 1992 A method for industrially preparing methylamines by which the production of Me2NH and MeNH2 is increased and production of Me3N is decreased comprises reacting MeOH with NH3 in the gaseous phase in the presence of a mordenite modified with a silylating agent by a silylation treatment in a liquid phase.
Carbonylation process
CATALYSIS
W.J. Smith BP Chemicals Ltd. Eur. Pat. Appl. 596,632, May 11, 1994; U.K. Appl. Nov. 5, 1992 Aliphatic C<~6carboxylic acids (e.g., AcOH) are prepared by contacting an aliphatic alcohol (e.g., MeOH) with CO in the presence of a Cu-, Ni-, Ir-, Rh-, or Co-loaded mordenite zeolite catalyst.
Preparation of methylamines from methanol and ammonia
Conversion of a feedstock comprising linear olefins
T. Kyora; K. Terada Mitsui Toatsu Chemica/s Jpn. Kokai Tokkyo Koho 94,09,510, Jan. 18, 1994; Appl. June 26, 1992 MeNH2 and Me2NH are selectively prepared by reaction of MeOH with NH3 using Mg-containing high-silica mordenites as catalysts.
Selective decomposition of ethylbenzene in Cs aromatic compounds H. Horiuchi; K. Sato; K. Sumitani et al. Teijin Ltd. Jpn. Kokai Tokkyo Koho 94,56,710; 94,56,711, Mar. 1, 1994; Appl. Aug. 7, 1992 In a method for decreasing PhEt in a hydrocarbon feed raw material (substantially consisting of PhEt and a mixture of xylene isomers), PhEt is selectively decomposed by treating the hydrocarbon feed in the presence of a catalyst consisting of (1) MgO supported on silica/alumina (molecular ratio 10), which is a pentasil-type crystalline aluminosilicate zeolite with at least 10% of the cation site being occupied with divalent or higher valent metal cations, and (2) Pt or Sn supported on a refractory inorganic oxide. The above catalyst efficiently decomposes PhEt and suppresses the loss of xylene and the formation of heavy aromatic compounds.
Preparation of aryl alcohols from aryl halides H. Ishida; H. Nakajima Asahi Chemica/ Ind. Jpn. Kokai Tokkyo Koho 94,16,582, Jan. 25, 1994; Appl. Feb. 3, 1993 Aryl alcohols, useful as materials for polymers, are prepared by hydrolysis of aryl halides in the presence of H20 in the gas phase using Group IB metal-containing crystalline aluminosilicate AZ-1 as catalyst.
Use of dealuminated zeolite for catalytically converting cyclohexanone oxime to ~-caprolactam (a precursor for nylon) M.R. Apelian; W.K. Bell; A.S. Fung et al. Mobi/ Oil Corp. U.S. 5,292,880, Mar. 8, 1994; U.S. Appl. May 11, 1992 Cont.-in-part of U.S. 5,242,676 The conversion catalyst is a crystalline aluminosilicate zeolite having a constraint index >1 and a reduced surface acidity (I>40%) by selective surface dealumination (~<50%) of the crystalline aluminosilicate zeolite, such as ZSM-5, by contacting the
H.H. Mooiweer; J. Suurd; K.P. De Jong Shell Internationale Research Maatschappij B. V, Eur. Pat. Appl. 574,994, Dec. 22, 1993; Appl. June 15, 1992 A process yielding a product enriched in branched olefins involves contacting the feedstock with a tectometallosilicate having a ferrierite crystal structure at an olefin partial pressure of <~0.5 bar.
Aromatization of C2_4 hydrocarbons F. Alario; P. Renard /nstitut Francais du Petro/e Fr. Demande 2,592,259, Dec. 17, 1993; Appl. June 16, 1992 A mixture of C2_4 hydrocarbons is reacted in a fixed catalyst bed and then in a fluidized bed, at 1-5 bar and 400-700 °C, and the reaction products are cryogenically separated into H2,C3, and C4 gases that are recycled to the process, aromatics, light C;_2 gases, olefins, and paraffins. The catalyst is either a MFI zeolite, synthesized in a fluoride-containing medium, containing Si, AI, and optionally Ga, or a MFI zeolite containing /> one platinum family metal and also /> one additional metal chosen from Sn, Ge, Pb, and In.
Hydroalkylation of aromatic hydrocarbons G.G. Percival Broken Hi//Proprietary Co. Ltd, PCT Int. Appl. 94,08,712, Apt. 28, 1994; AUST Appl. Oct. 15, 1992 The catalyst comprises a molecular sieve material having an acid function, a hydrogenation component, and a shapeselective function, The sieve material has a pore size that is capable of accommodating molecules of the products and excluding molecules of reactants which are too large. Sieve materials described include zeolite types X and Y, ZSM-20, and zeolite ~. The hydrogenation component includes copper and/or nickel and/or a rare earth metal. Promoters for the catalyst include ruthenium and platinum.
Nitrogen oxide removal from exhaust gas K. Kitakizaki; Y. Asano; T. Tamura et al. Meidensha Electric Mfg. Co, Ltd. Jpn. Kokai Tokkyo Koho 94,71,141, Mar. 15, 1994; Appl. Aug. 31, 1992 NO× is removed from exhaust gas by passing the gases together with hydrocarbons through a device containing a NO× removing agent comprising iron loaded on NaX, NaY, Na-containing mordenite, and/or A-type zeolite containing K, Na, and/or Ca. The agent is prepared by impregnating zeolite with a Fe salt solution and drying. The agent has a long lifetime.
Zeolites 15:382-386, 1995
383
Manufacture of crystalline, ultralarge-pore oxide materials D.C. Calebro; J. Hen Mobil 0//Corp. U.S. 5,308,602, May 3, 1994; Appl. Oct. 13, 1992 The process involves forming a reaction mixture comprising an amphiphilic compound, e.g., cetyltrimethylammonium compound, a source of /> one oxides, e.g., SiO2, and water, and maintaining the mixture under conditions sufficient to form a crystalline oxide material. The amphiphilic compound/water molecular ratio is <0.004. Upon calcination, the oxide material has an X-ray diffraction pattern having/> one peaks at a position >18 A units d-spacing, with relative intensity 100 and C6H6 adsorption at 25 °C and 50 tort ~>15 g/g anhydrous crystals. The source of SiO2 may be a Na silicate solution.
zeolite with dicarboxylic acid, such as oxalic acid at acid/catalyst volume ratio 1>1:1.
Preparing methylamines T. Kiyoura; K. Terada Mitsu/ Toatsu Chemica/s Inc. Fur. Pat. Appl. 593,086, Apr. 20, 1994; Jpn. Appl. Oct. 16, 1992 A method for industrially preparing methylamines by which the production of Me2NH and MeNH2 is increased and production of Me3N is decreased comprises reacting MeOH with NH3 in the gaseous phase in the presence of a mordenite modified with a silylating agent by a silylation treatment in a liquid phase.
Carbonylation process
CATALYSIS
W.J. Smith BP Chemicals Ltd. Eur. Pat. Appl. 596,632, May 11, 1994; U.K. Appl. Nov. 5, 1992 Aliphatic C<~6carboxylic acids (e.g., AcOH) are prepared by contacting an aliphatic alcohol (e.g., MeOH) with CO in the presence of a Cu-, Ni-, Ir-, Rh-, or Co-loaded mordenite zeolite catalyst.
Preparation of methylamines from methanol and ammonia
Conversion of a feedstock comprising linear olefins
T. Kyora; K. Terada Mitsui Toatsu Chemica/s Jpn. Kokai Tokkyo Koho 94,09,510, Jan. 18, 1994; Appl. June 26, 1992 MeNH2 and Me2NH are selectively prepared by reaction of MeOH with NH3 using Mg-containing high-silica mordenites as catalysts.
Selective decomposition of ethylbenzene in Cs aromatic compounds H. Horiuchi; K. Sato; K. Sumitani et al. Teijin Ltd. Jpn. Kokai Tokkyo Koho 94,56,710; 94,56,711, Mar. 1, 1994; Appl. Aug. 7, 1992 In a method for decreasing PhEt in a hydrocarbon feed raw material (substantially consisting of PhEt and a mixture of xylene isomers), PhEt is selectively decomposed by treating the hydrocarbon feed in the presence of a catalyst consisting of (1) MgO supported on silica/alumina (molecular ratio 10), which is a pentasil-type crystalline aluminosilicate zeolite with at least 10% of the cation site being occupied with divalent or higher valent metal cations, and (2) Pt or Sn supported on a refractory inorganic oxide. The above catalyst efficiently decomposes PhEt and suppresses the loss of xylene and the formation of heavy aromatic compounds.
Preparation of aryl alcohols from aryl halides H. Ishida; H. Nakajima Asahi Chemica/ Ind. Jpn. Kokai Tokkyo Koho 94,16,582, Jan. 25, 1994; Appl. Feb. 3, 1993 Aryl alcohols, useful as materials for polymers, are prepared by hydrolysis of aryl halides in the presence of H20 in the gas phase using Group IB metal-containing crystalline aluminosilicate AZ-1 as catalyst.
Use of dealuminated zeolite for catalytically converting cyclohexanone oxime to ~-caprolactam (a precursor for nylon) M.R. Apelian; W.K. Bell; A.S. Fung et al. Mobi/ Oil Corp. U.S. 5,292,880, Mar. 8, 1994; U.S. Appl. May 11, 1992 Cont.-in-part of U.S. 5,242,676 The conversion catalyst is a crystalline aluminosilicate zeolite having a constraint index >1 and a reduced surface acidity (I>40%) by selective surface dealumination (~<50%) of the crystalline aluminosilicate zeolite, such as ZSM-5, by contacting the
H.H. Mooiweer; J. Suurd; K.P. De Jong Shell Internationale Research Maatschappij B. V, Eur. Pat. Appl. 574,994, Dec. 22, 1993; Appl. June 15, 1992 A process yielding a product enriched in branched olefins involves contacting the feedstock with a tectometallosilicate having a ferrierite crystal structure at an olefin partial pressure of <~0.5 bar.
Aromatization of C2_4 hydrocarbons F. Alario; P. Renard /nstitut Francais du Petro/e Fr. Demande 2,592,259, Dec. 17, 1993; Appl. June 16, 1992 A mixture of C2_4 hydrocarbons is reacted in a fixed catalyst bed and then in a fluidized bed, at 1-5 bar and 400-700 °C, and the reaction products are cryogenically separated into H2,C3, and C4 gases that are recycled to the process, aromatics, light C;_2 gases, olefins, and paraffins. The catalyst is either a MFI zeolite, synthesized in a fluoride-containing medium, containing Si, AI, and optionally Ga, or a MFI zeolite containing /> one platinum family metal and also /> one additional metal chosen from Sn, Ge, Pb, and In.
Hydroalkylation of aromatic hydrocarbons G.G. Percival Broken Hi//Proprietary Co. Ltd, PCT Int. Appl. 94,08,712, Apt. 28, 1994; AUST Appl. Oct. 15, 1992 The catalyst comprises a molecular sieve material having an acid function, a hydrogenation component, and a shapeselective function, The sieve material has a pore size that is capable of accommodating molecules of the products and excluding molecules of reactants which are too large. Sieve materials described include zeolite types X and Y, ZSM-20, and zeolite ~. The hydrogenation component includes copper and/or nickel and/or a rare earth metal. Promoters for the catalyst include ruthenium and platinum.
Nitrogen oxide removal from exhaust gas K. Kitakizaki; Y. Asano; T. Tamura et al. Meidensha Electric Mfg. Co, Ltd. Jpn. Kokai Tokkyo Koho 94,71,141, Mar. 15, 1994; Appl. Aug. 31, 1992 NO× is removed from exhaust gas by passing the gases together with hydrocarbons through a device containing a NO× removing agent comprising iron loaded on NaX, NaY, Na-containing mordenite, and/or A-type zeolite containing K, Na, and/or Ca. The agent is prepared by impregnating zeolite with a Fe salt solution and drying. The agent has a long lifetime.
Zeolites 15:382-386, 1995
383