Comparative Textural Study of Highly Ordered Silicate and Aluminosilicate Mesoporous Mesophase Materials Having Different Pore Sizes
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
Mesoporous Molecular Sieves : 2nd International Symposium
27 авг. - 2 сент. 2000
,
Quebec City
|
| Журнал |
Microporous and Mesoporous Materials
ISSN: 1387-1811
, E-ISSN: 1873-3093
|
| Вых. Данные |
Год: 2001,
Том: 44-45,
Страницы: 33-40
Страниц
: 8
DOI:
10.1016/S1387-1811(01)00166-4
|
| Ключевые слова |
Honeycomb structure model, MCM-41, SBA-15, Surface roughness |
| Авторы |
Fenelonov V.B.
1
,
Derevyankin A.Y.
1
,
Kirik S.D.
2
,
Solovyov L.A.
2
,
Shmakov A.N.
1
,
Bonardet J.-L.
3
,
Gedeon A.
3
,
Romannikov V.N.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Novosibirsk 630090, Russian Federation
|
| 2 |
Institute of Chemistry and Chemical Engineering, K. Marx Av., 42, Krasnoyarsk 660049, Russian Federation
|
| 3 |
Université P. et M. Curie, 4 place Jussieu, F-75252 Paris Cedex 05, France
|
|
Информация о финансировании (4)
|
1
|
Российский фонд фундаментальных исследований
|
98-03-32390
|
|
2
|
French National Centre for Scientific Research
|
5015
|
|
3
|
International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union
|
IR-97-0676
|
|
4
|
Министерство образования и науки Российской Федерации
|
|
Honeycomb structure model was applied for describing surface properties in the MCM-41 and SBA-15 types of highly ordered silicas and aluminosilicates with different nominal mesopore diameters: about 4 nm and about 10 nm. As shown, calculations of internal specific surface area Ame require a heterogeneity of this surface to be taken into account, the latter being quantified by the roughness coefficient β. These calculations at the condition β=1.0 will allow to estimate the lower limit of specific surface area of the materials only, which will correspond to the perfectly smooth walls of mesopores. This description seems to be valid for the MCM-41 type systems, for which β is about 1.1–1.2. On the contrary, β is found to exceed 1.5 for the SBA-15 type materials. This fact is probably due to an essential non-smoothness of the mesopore surface in these systems and may be associated with their synthesis conditions.