Transformation of n-hexane on deposited iridium and copper-iridium catalysts

Transformation of n-hexane on deposited iridium (Ir/SiO2) and copper-iridium (Ir-Cu/SiO2) catalysts was studied in the temperature range 620-780 K. The dehydrocyclization reaction gave benzene, and cracking gave propane. Both catalysts were treated in a glow discharge plasma in oxygen. The yield of C6H6 on Ir/SiO2 increased many times after plasma treatment, but the activity of this catalyst was unstable and relaxed to its initial value. The activity of the Ir-Cu(5 wt %)/SiO2 catalyst increased 1.4-2 times and its selectivity with respect to benzene increased 1.3 times after plasma treatment. The selectivity was stable in time. The formation of stable active centers on the Ir-Cu/SiO2 catalyst was explained by the presence of copper in its structure.

Редакторы
-
Издательство
-
Номер выпуска
3
Язык
Английский
Страницы
364-367
Статус
Опубликовано
Подразделение
-
DOI
-
Номер
-
Том
76
Год
2002
Организации
  • 1 Russ. Univ. of Peoples' Friendship, ul. Miklukho-Maklaya 6, Moscow 117198, Russian Federation
Ключевые слова
copper; hexane; iridium; oxygen; propane; article; biotransformation; catalysis; catalyst; cyclization
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/211/