Effects of plasmochemical treatments and cerium additions on the structural characteristics and activity of copper catalyst particles in isopropanol dehydrogenation

The effect of the treatment of the 5 wt % Cu/SiO 2 (I) and (5 wt % Cu + 0.5 wt % Ce)/SiO 2 (II) catalysts with glow discharge plasma in O 2, H 2, and Ar on their structural characteristics was studied by X-ray phase analysis; the influence of cerium additions and plasmochemical treatments on the catalyst activity in isopropanol dehydrogenation was also investigated. Under the plasmochemical treatment, the diameters of Cu particles in catalyst I nearly doubled and microstresses in the metal particles also changed. Catalyst II was X-ray amorphous both before and after plasmochemical treatments. The activity of I after plasmochemical treatment increased because of the increase in the number of centers and changes in their composition. Growth of the activity of I compared with the activity of II was explained by the formation of new catalytic centers due to positive charging of the C +α e adatom on the surface of the copper particle. © Pleiades Publishing, Ltd., 2012.

Редакторы
-
Издательство
-
Номер выпуска
8
Язык
Английский
Страницы
1196-1198
Статус
Опубликовано
Подразделение
-
Номер
-
Том
86
Год
2012
Организации
  • 1 Russian Peoples' Friendship University, Moscow, Russian Federation
Ключевые слова
Activity in dehydrogenation; Copper catalyst; Plasmochemical treatment
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/2279/