Conversion of Dimethyl and Diethyl Disulfides into Thiols in the Presence of Solid Catalysts Full article
Journal |
Petroleum Chemistry
ISSN: 0965-5441 , E-ISSN: 1531-8532 |
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Output data | Year: 2001, Volume: 41, Number: 1, Pages: 50-56 Pages count : 7 | ||
Tags | dimethyl sulfide; disulfide; ethylene; hydrogen sulfide; Lewis acid; thiol derivative | ||
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Abstract:
The reaction of gas-phase conversion of dimethyl disulfide and diethyl disulfide in the presence of solid catalysts in different environments at atmospheric pressure and a temperature of 200-350°C was investigated. Over catalysts that contain Brönsted and Lewis acid sites on their surface, the disulfides decompose in a helium almosphere to yield thiols by eliminating H2S and ethylene; the reactions proceed via independent routes. A produced thiol disproportionates to form the sulfide and H2S, this process is retarded in the presence of water. The addition of H2S to helium increases the reaction rate. The yield of thiol in terms of the disulfide converted is 60-87 mol % at 90% disulfide conversion over catalysts containing weak Lewis acid sites, but increases to 92-98% over hydrogenating sulfide catalysts at t = 200°C in a hydrogen atmosphere.
Cite:
Mashkina A.V.
, Yakovleva V.N.
, Sakhaltueva L.G.
, Khairulina L.N.
Conversion of Dimethyl and Diethyl Disulfides into Thiols in the Presence of Solid Catalysts
Petroleum Chemistry. 2001. V.41. N1. P.50-56. WOS Scopus РИНЦ
Conversion of Dimethyl and Diethyl Disulfides into Thiols in the Presence of Solid Catalysts
Petroleum Chemistry. 2001. V.41. N1. P.50-56. WOS Scopus РИНЦ
Original:
Машкина А.В.
, Яковлева В.Н.
, Сахалтуева Л.Г.
, Хайрулина Л.Н.
Превращение диметил- и диэтилдисульфидов в тиолы в присутствии твердых катализаторов
Нефтехимия. 2001. Т.41. №1. С.54-61. Scopus РИНЦ
Превращение диметил- и диэтилдисульфидов в тиолы в присутствии твердых катализаторов
Нефтехимия. 2001. Т.41. №1. С.54-61. Scopus РИНЦ
Dates:
Submitted: | May 18, 2000 |
Published print: | Jan 1, 2001 |
Identifiers:
Web of science | WOS:000167189700010 |
Scopus | 2-s2.0-0035241286 |
Elibrary | 13387870 |