Abstract: It provide a catalyst for the production of epoxides by a vapor-phase oxidation of an unsaturated hydrocarbon having a chain length of 4-20 carbon atoms and containing no allylic hydrogen atom, characterized by having a catalytic component containing silver and at least one element selected from the group consisting of alkali metals and thallium deposited onto a carrier obtained by mixing &agr;-alumina having a sodium content in the range of 1-70 mmol (as reduced to Na) per kg of &agr;-alumina with an aluminium compound, a silicon compound, and a sodium compound and calcining the resultant mixture, the carrier having a silicon content (as reduced to SiO2) in the range of 0.3-11.5 mass % based on the mass of the carrier and a sodium content (as reduced to Na2O) in the range of 0.11-2.5 mass % based on the mass of the carrier.
Type:
Application
Filed:
August 2, 2002
Publication date:
January 16, 2003
Applicant:
Nippon Shokubai Co. Ltd., a Japan Corporation
Abstract: A carrier which permits preparation of a catalyst possessed of excellent catalytic performance and used for the production of ethylene oxide, a catalyst obtained by using this carrier, endowed with excellent catalytic performance, and used for the production of ethylene oxide, and a method for the production of ethylene oxide by the use of the catalyst are provided. The carrier is obtained by mixing &agr;-alumina having an alkali metal content in the range of 1-70 m.mols/kg (&agr;-alumina) with an aluminum compound, a silicon compound, and an alkali metal compound and calcining the produced mixture. The carrier which has an aluminum content as reduced to Al in the range of 0-3 mols/kg of carrier, a silicon compound content as reduced to Si in the range of 0.01-2 mols/kg of carrier, and an alkali metal content as reduced to alkali metal in the range of 0.01-2 mols/kg of carrier is used for the deposition of a catalyst for use in the production of ethylene oxide.
Type:
Application
Filed:
November 2, 2001
Publication date:
August 1, 2002
Applicant:
Nippon Shokubai Co., Ltd. a Japan corporation
Abstract: A method for producing a molding of binderless zeolite by exposing to saturated steam a precursor having a tetraalkylammonium salt component, an alkali metal component, and a metal component incorporated in the crystal skeleton of zeolite supported on a molding using silica as a main component, the molding of binderless zeolite, and use of the molding as a catalyst for the production of an alkanolamine.
Type:
Application
Filed:
October 11, 2001
Publication date:
April 11, 2002
Applicant:
Nippon Shokubai co., Ltd., Japan corporation
Abstract: A method for producing inexpensively in a high yield a halogen-containing aromatic compound, particularly a halogen-containing aromatic compound incorporating therein a bromodifluoroalkyl group, and a halogen-containing naphthalene compound useful as a raw material for a resin excelling in heat resistance, chemical resistance and water repellency, and having a low dielectric constant and a low refractivity are provided.
Type:
Application
Filed:
June 21, 2001
Publication date:
November 29, 2001
Applicant:
Nippon Shokubai Co., Ltd., a Japan corporation
Abstract: A process is provided which allows a 1,4-bis(difluoroalkyl)benzene derivative to be produced inexpensively by a simple procedure without requiring any special facility.
Type:
Application
Filed:
January 11, 2001
Publication date:
May 31, 2001
Applicant:
Nippon Shokubai Co., Ltd., a Japan Corporation