|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Selective Hydrogenation of Phenylacetylene on Ni and Ni–Pd Catalysts Modified with Heteropoly Compounds of the Keggin Typeстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
- Авторы: Navalikhina M.D., Kavalerskaya N.E., Lokteva E.S., Peristyi A.A., Golubina E.V., Lunin V.V.
- Журнал: Russian Journal of Physical Chemistry A
- Том: 86
- Номер: 12
- Год издания: 2012
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 1800
- Последняя страница: 1807
- DOI: 10.1134/S0036024412120187
- Аннотация: —It is established that unmodified Ni catalysts and Ni catalysts modified with Mo and Whet eropoly compounds (HPC) of the Keggin type (6 wt %) along with catalyst containing 6% K4SiW12O40/Al2O3 appear to be active in the reaction of phenylacetylene (PA) hydrogenation. At low temperatures (100– 150°C), the selectivity of the process strongly depends on the nature of the modifier or second active metal (Pd). It is demonstrated that in the presence of 6% Ni–0.015% Pd/Al2O3 modified by HPC K4SiMo6W6O40, the conversion of PA at 100°C was 87% at a styrene : ethylbenzene ratio of 1 : 1. The acidity of HPC is found to influence the side reactions of alkylation and condensation. Transmission electron microscopy demon strates that Ni in modified HPC 6% Ni/Al2O3 is present in the form of the particles below 2 nm in size, and these particles of Ni become larger when affected by the reaction medium during PA hydrogenation. Ke
- Добавил в систему: Локтева Екатерина Сергеевна