Methylation of Naphthalene on MTW-Type Zeolites. Influence of Template Origin and Substitution of Al by Ga
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Applied Catalysis A: General
ISSN: 0926-860X
, E-ISSN: 1873-3875
|
| Вых. Данные |
Год: 2010,
Том: 375,
Номер: 2,
Страницы: 279-288
Страниц
: 10
DOI:
10.1016/j.apcata.2010.01.003
|
| Ключевые слова |
2,6-Dimethylnaphthalene, Isomorphous substitution, Methylation, Selectivity, ZSM-12 zeolite |
| Авторы |
Wu Wei
1
,
Wu Weiguo
1
,
Kikhtyanin O.V.
2
,
Li Lingfei
1
,
Toktarev A.V.
2
,
Ayupov A.B.
2
,
Khabibulin J.F.
2
,
Echevsky G.V.
2
,
Huang Juan
1
|
| Организации |
| 1 |
Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, School of Chemistry and Material Sciences, Heilongjiang University, Harbin 150080, Heilongjiang, China
|
| 2 |
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
|
|
Two templates, methyltriethylammonium bromide (MTEA) and tetraethylammonium bromide (TEA) were used to synthesize aluminosilicate ZSM-12 zeolites. Additionally, zeolites isomorphously substituted (partially or totally) by gallium were prepared with MTEA. Various techniques including XRD, scanning electron microscopy (SEM), N2 adsorption, NH3-TPD, Fourier transform infrared (FTIR) spectroscopy and MAS NMR were used to monitor the physico-chemical properties of these solids. Catalytic properties of the prepared zeolites were studied in the methylation of naphthalene. Higher conversion of naphthalene, higher content of 2,6-DMN among total DMNs and higher 2,6-/2,7-DMN ratio were observed on Al-TEA sample and on Ga-containing zeolites compared to Al-MTEA. The specific morphology of zeolite crystals and the presence of secondary mesopores were identified to be responsible for remarkable catalytic performance of MTW-type zeolites.