Carbenium Ion Properties of Octene-1 Adsorbed on Zeolite H-ZSM-5
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Catalysis Letters
ISSN: 1011-372X
, E-ISSN: 1572-879X
|
| Вых. Данные |
Год: 1994,
Том: 24,
Номер: 3-4,
Страницы: 271-284
Страниц
: 14
DOI:
10.1007/BF00811800
|
| Ключевые слова |
13C carbon scrambling, 13C CP/MAS NMR, 2H NMR, carbenium ion, H-ZSM-5 zeolite, Octene-1 |
| Авторы |
Stepanov Alexander G.
1
,
Luzgin Mikhail V.
1
,
Romannikov Vyacheslav N.
1
,
Zamaraev Kirill I.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences
|
|
Информация о финансировании (1)
|
1
|
Российский фонд фундаментальных исследований
|
93-03-4808
|
It is shown that octene-1 adsorbed on zeolite H-ZSM-5 at ambient temperature exhibits carbenium ion properties. Namely: (1) According to 2H NMR, the proton of the acidic ≡Al-OH-Si≡ group of the zeolite is transferred into the CH2= group of the octene-1 molecule. (2) According to 13C NMR the 13C label inserted into the terminal CH2= group of the octene-1 molecule is scrambled over its hydrocarbon skeleton. Thermodynamic and kinetic parameters for carbon scrambling are measured within the temperature range 290–343 K. The zeolite framework is shown to favour the formation of the linear rather than branched carbenium ion.