Selective C-and O-Methylation of Catechol in Gas Phase over Modified y-Aluminas Научная публикация
Сборник | Science and Technology in Catalysis 1998 : Proceedings of the Third Tokyo Conference on Advanced Catalytic Science and Technology,19-24 July 1998, Tokyo Сборник, 1999. 492 c. ISBN 978-0-444-50218-6. |
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Журнал |
Studies in Surface Science and Catalysis
ISSN: 0167-2991 |
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Вых. Данные | Год: 1999, Том: 121, Страницы: 159-164 Страниц : 6 DOI: 10.1016/S0167-2991(99)80060-3 | ||||
Авторы |
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Организации |
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Информация о финансировании (1)
1 | Swiss National Science Foundation |
Реферат:
Gas phase methylation of catechol by methanol over modified y-alumina catalysts is studied experimentally. The catalyst composition and the reaction conditions are optimized to attain the highest selectivity towards 3-methylcatechol (C-methylation) or guaiacol (O-methylation and to diminish the catalyst deactivation. The modified y-alumina Li+ 3 % Mg2+ 5 %/γ-Al2O3 was found to be the best with respect to the 3-methylcatechol formation. At 35O°C and at a conversion level of 28% the selectivity of 92% towards 3-methylcatehcol was reached. The deactivation was observed to be lower if compared to pure y-alumina. Selectivity towards guaiacol formation increased with surface acidity and reached 89% over phosphated γ-alumina at 270γC. The catalyst structure was determined with a high confidence factor via “full-profile X-ray analysis”. The experimental data relating to activity/selectivity as well as catalyst stability to coke formation were explained from the model found for the catalyst structure.
Библиографическая ссылка:
Kiwi-Minsker L.
, Jenzer G.
, Pliasova L.
, Renken A.
Selective C-and O-Methylation of Catechol in Gas Phase over Modified y-Aluminas
В сборнике Science and Technology in Catalysis 1998 : Proceedings of the Third Tokyo Conference on Advanced Catalytic Science and Technology,19-24 July 1998, Tokyo. 1999. – C.159-164. – ISBN 978-0-444-50218-6. DOI: 10.1016/S0167-2991(99)80060-3 WOS Scopus РИНЦ
Selective C-and O-Methylation of Catechol in Gas Phase over Modified y-Aluminas
В сборнике Science and Technology in Catalysis 1998 : Proceedings of the Third Tokyo Conference on Advanced Catalytic Science and Technology,19-24 July 1998, Tokyo. 1999. – C.159-164. – ISBN 978-0-444-50218-6. DOI: 10.1016/S0167-2991(99)80060-3 WOS Scopus РИНЦ
Даты:
Опубликована в печати: | 1 янв. 1999 г. |
Опубликована online: | 2 сент. 2007 г. |
Идентификаторы БД:
Web of science | WOS:000081933100022 |
Scopus | 2-s2.0-0009598308 |
РИНЦ | 13307949 |
Chemical Abstracts | 1999:630687 |
Chemical Abstracts (print) | 132:224053 |
OpenAlex | W1531360413 |