Catalytic Processing of Dimethyl Disulphide into Dimethyl Sulphide Научная публикация
Журнал |
Chemistry for Sustainable Development
ISSN: 1817-1818 |
||
---|---|---|---|
Вых. Данные | Год: 2012, Том: 20, Номер: 2, Страницы: 181-188 Страниц : 8 | ||
Ключевые слова | catalysts, dimethyl disulphide, dimethyl sulphide | ||
Авторы |
|
||
Организации |
|
Реферат:
Regularities were studied concerning dimethyl disulphide transformation in an atmosphere of helium in the presence of solid catalysts those differ from each other in the acid-base properties. The catalysts containing mainly BrØnsted acidic centres or strong basic centres on the surface exhibit a low activity level. Under the action of weak Lewis acidic centres, the dimethyl sulphide is formed at a low rate, however with increasing the strength of these centres the rate of dimethyl sulphide formation increases. For a catalyst to exhibit a high activity level in the formation of dimethyl sulphide, it is required for the presence of strong Lewis and BrØnsted centers, as well as basic centres with a moderate strength on the surface. The results of kinetic studies indicate that before 200 °C there is a parallel reaction scheme realized, whereas at a higher temperature the reaction scheme is consecutive. The reaction kinetic type varies from the first-order kinetics to zero-order one depending on the concentration of the substrate. The rate of dimethyl sulphide formation increases with increasing the temperature, the apparent activation energy amounts to (55±1) kJ/mol. The selectivity level of dimethyl sulphide formation in the case of complete conversion level of the substrate reaches 50–60 %.
Библиографическая ссылка:
Mashkina A.V.
Catalytic Processing of Dimethyl Disulphide into Dimethyl Sulphide
Chemistry for Sustainable Development. 2012. V.20. N2. P.181-188. РИНЦ
Catalytic Processing of Dimethyl Disulphide into Dimethyl Sulphide
Chemistry for Sustainable Development. 2012. V.20. N2. P.181-188. РИНЦ
Оригинальная версия:
Машкина А.В.
Каталитическая переработка диметилдисульфида в диметилсульфид
Химия в интересах устойчивого развития. 2012. Т.20. №2. С.219-226. RSCI РИНЦ
Каталитическая переработка диметилдисульфида в диметилсульфид
Химия в интересах устойчивого развития. 2012. Т.20. №2. С.219-226. RSCI РИНЦ
Даты:
Поступила в редакцию: | 11 апр. 2011 г. |
Идентификаторы БД:
РИНЦ | 20570330 |
Цитирование в БД:
БД | Цитирований |
---|---|
РИНЦ | 3 |