Nitrogen Adsorption at ca. 77.4 K on Partially Hydrated and Anhydrous α-Al2O3
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Adsorption
ISSN: 0929-5607
, E-ISSN: 1572-8757
|
| Вых. Данные |
Год: 2019,
Том: 25,
Номер: 3,
Страницы: 601-611
Страниц
: 11
DOI:
10.1007/s10450-019-00055-z
|
| Ключевые слова |
Reference adsorption; N2; Alumina; Corundum |
| Авторы |
Mel’gunov Maxim S.
1,2
,
Ayupov Artem B.
1,2
,
Krapivina Elena A.
1,2
,
Mel’gunova Elena A.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis SB RAS, Akad. Lavrentieva 5, Novosibirsk, Russian Federation 630090
|
| 2 |
Novosibirsk State University, Pirogova 2, Novosibirsk, Russian Federation 630090
|
|
Информация о финансировании (1)
|
1
|
Федеральное агентство научных организаций России
|
0303-2016-0002
|
N2 adsorption isotherms at ca. 77 K on macroporous α-Al2O3 have been measured and analyzed in the frameworks of the classic thermodynamic approach, with independent experimental data obtained by means of SEM-EDX, XRD, TGA, helium pycnometry, and mercury porosimetry taken into account. It is shown, that presence of adsorbed water considerably influences N2 adsorption, which gradually increases with temperature of the degas treatment. Simultaneously, the shape of the isotherms has a trend to change from Type II to Type VI, that assumes changing of adsorption mechanism from progressive increasing of the adsorbed layer thickness towards layer-by-layer adsorption. Corrected and smoothed isotherms are presented in the tabular form as reference for subsequent more comprehensive analysis using molecular statistical approaches.