Tosoh Corporation

Toyo Soda Manufacturing Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Sagami Chemical Research Center

Kazuhiko Sekizawa

Masao Nakano

Senshi Kasahara

Yukihiro Tsutsumi

Toshio Hironaka

Akinori Eshita

Yasushi Hara

Yukio Ito

Hiroshi Miura

Hidekazu Aoyama

Takanori Miyake

Shunji Inoue

Nobumasa Suzuki

Shinichi Takeshima

Kiyotaka Oyama

Tatsuji Mizuno

Keiichi Kihara

Teruhisa Sakamoto

Masaru Ichikawa

Satoshi Fujii

Seiichi Asano

Kazuo Sekitani

Shuji Okazaki

Shirou Nakamura

Hironobu Hosose

Shoji Adachi

Kohichi Shikakura

Kazuaki Tanaka

A catalyst for purifying an exhaust gas to remove nitrogen oxides, carbon monoxide and hydrocarbons from an oxygen rich exhaust gas containing the same, comprising (i) a zeolite having an SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio of at least 15 and (ii) (a) silver and, optionally, (b) an alkali metal and/or an alkaline earth metal incorporated therein.

Catalyst for purifying exhaust gas

A method for removing nitrogen oxides from an oxygen-rich exhaust gas containing nitrogen oxides and hydrocarbons comprising bringing the oxygen-rich exhaust gas into contact with a catalyst comprising (1)(i) a zeolite containing an apatite compound and having an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 15 and (ii) at least one active metal or (2)(ii) a zeolite containing an apatite compound and having an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 15, (ii) an alkaline earth metal and (iii) at least one active metal.

Method for removal of nitrogen oxides

A process for removing nitrogen oxides from oxygen rich exhaust gas containing nitrogen oxides and hydrocarbons using a catalyst composed of at least one active metal and zeolite having a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 of at least 15, treated with a vapor of at least one silicon compound selected from alkylchlorosilanes, alkoxysilanes, alkoxyalkylsilanes, and silicon tetrachloride or treated with an alkoxysilane or silicon tetrachloride in an organic solvent.

Process for removing nitrogen oxides from oxygen rich exhaust gas

A catalyst for purifying an exhaust gas comprising a zeolite catalyst ion exchanged with cobalt and at least one alkaline earth metal and a zeolite catalyst ion-exchanged with copper, provided on an inlet side of an exhaust gas stream and an outlet side of the exhaust gas respectively, or randomly present in a mixed state.

Nitrogen oxides are removed from an oxygen rich exhaust gas containing nitrogen oxides and hydrocarbons by bringing the oxygen rich exhaust gas into contact with a catalyst composed of phosphorus and at least one active metal contained in a zeolite having a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 of at least 15.

A catalyst for purifying an exhaust gas to remove nitrogen oxides, carbon monoxide and hydrocarbons from an oxygen-rich exhaust gas containing nitrogen oxides, carbon monoxide and hydrocarbons, comprising (i) a zeolite having an SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio of at least 15 and (ii) (a) cobalt, (b) an alkaline earth metal and (c) silver, or nickel and/or zinc, or platinum and/or manganese, or copper and/or rhodium, incorporated thereinto.

Method for purifying exhaust gas

A method for purifying an exhaust gas using a transition metal-containing zeolite having a high hydrothermal stability having the formula, in terms of a molar composition of oxides:

Purifying gases with an alkali metal and transition metal containing

A catalyst for purifying an exhaust gas comprising: a crystalline aluminosilicate containing a rare earth or alkaline earth metal produced by allowing a rare earth or alkaline earth metal salt to exist in reactants for a synthesis of a crystalline aluminosilicate, and introduced therein, at least one element selected from the consisting of the group Ib metals and VIII metals of the periodic table.

A catalyst for purifying an exhaust gas to remove nitrogen oxides, carbon monoxide and hydrocarbons from an oxygen-rich exhaust gas containing nitrogen oxides, carbon monoxide and hydrocarbons comprising (i) a zeolite having an SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio of at least 15 and (ii) (a) cobalt, (b) a rare earth metal and (c) silver, or nickel and/or zinc, or platinum and/or manganese, or copper and/or rhodium, incorporated thereinto.

A process for producing an alkylenamine, which comprises reacting ammonia and/or an alkylenamine with an alkanolamine in the presence of niobium oxide treated with an acid, to obtain an alkylenamine having an increased number of alkylene chains over the ammonia and/or the alkylenamine as starting material.

Process for producing alkylenamine

A process for producing an alkylenamine, which comprises reacting ammonia and/or a polyalkylene polyamine with an alkanolamine to obtain an alkylenamine having an increased number of alkylene chains over the ammonia and/or the alkylenamine as starting material, wherein a catalyst having a niobium-containing substance supported on a carrier is used for the reaction.

Process for producing a polyalkylene polyamine

Disclosed is a shaped zeolite catalyst used for liquid phase organic reactions. The shaped zeolite catalyst is composed of substantially spherical particles having a particle diameter substantially in the range of from 70 to 300 .mu.m, and which has fine pores having a pore volume of 0.4 to 1 cc per gram of the shaped catalyst and a median pore diameter based on the pore volume of 1,000 to 5,500 .ANG..

Shaped zeolite catalyst for liquid phase organic reactions

A mixed oxide catalyst comprising niobium oxide and a member selected from the group consisting of titania, alumina, silica, zirconia and oxides of elements in Groups IIA, VA, VIA, IB, IIB, IIIB, VB, VIB, VIIB and VIII of the Periodic Table. A process for producing an alkylenamine, which comprise reacting ammonia and/or an alkylenamine with an alkanolamine in the presence of such a mixed oxide.

Mixed oxide catalyst and process for producing an alkylenamine by using

A para-substituted halogenobenzene derivative is prepared by halogenating a benzene derivative in the liquid phase in the presence of a molded zeolite catalyst body comprising, based on the weight of the molded zeolite catalyst body, 10 to 95% by weight of an L-type zeolite as the anhydrous state and 5 to 90% by weight of amorphous silica.

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Shinnanyo, Japan

Kazuhiko Sekizawa