Title:
Methods for Producing Dimethyl Sulfoxide
Document Type and Number:
Japanese Patent JP6309531
Kind Code:
B2
Abstract:
A process for producing dimethyl sulfoxide, wherein said process comprises the following steps: (1) contacting hydrogen sulfide with methanol to produce a mixture containing dimethyl sulfide, and separating dimethyl sulfide from the mixture; and (2) in the presence or absence of a solvent, contacting dimethyl sulfide obtained in step (1) with at least one oxidant and a catalyst to produce a mixture containing dimethyl sulfoxide, said catalyst comprises at least one Ti—Si molecular sieve.
Inventors:
Historical spring breeze
Forest people
Shukoda
Asahi Hiroshi
Red ink
Forest people
Shukoda
Asahi Hiroshi
Red ink
Application Number:
JP2015538254A
Publication Date:
April 11, 2018
Filing Date:
October 29, 2013
Export Citation:
Assignee:
China Petrochemical Co. Ltd.
China Petrochemical Co., Ltd. Petrochemical Science Institute
China Petrochemical Co., Ltd. Petrochemical Science Institute
International Classes:
C07C315/02; B01J20/10; B01J21/04; B01J29/89; C07C317/04
Domestic Patent References:
| JP2000219673A | ||||
| JP47011205B1 | ||||
| JP2001206714A |
Foreign References:
| CN1217326A | ||||
| US20030078160 |
Other References:
Ravinder s. Reddy, et al.,Sulfoxidation of Thioethers using Titanium Silicate Molecular Sieve Catalysts,Journal of the Chemical Society, Chemical Communications,英国,1992年,2号,84-85頁
Saitanya K., et al.,Chemoselective sulfoxidation by H2O2 or HNO3 using a phosphate impregnated titania catalyst,Tetrahedron Letters,2009年,50巻,3767-3771頁
Saitanya K., et al.,Chemoselective sulfoxidation by H2O2 or HNO3 using a phosphate impregnated titania catalyst,Tetrahedron Letters,2009年,50巻,3767-3771頁
Attorney, Agent or Firm:
Harakenzo world patent & trademark
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