Alteration of Adsorption Selectivity of LSX Zeolite in Li+ and H+ Forms towards CO2 and N2O
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Catalysis for Sustainable Energy
ISSN: 2084-6819
|
| Вых. Данные |
Год: 2017,
Том: 4,
Номер: 1,
Страницы: 31-35
Страниц
: 5
DOI:
10.1515/cse-2017-0006
|
| Ключевые слова |
LSX zeolite; ion-exchange; Li-LSX; H-LSX; separation CO2; N2O; adsorption; selectivity |
| Авторы |
Leonova A.A.
1
,
Mel’gunov M.S.
1,2
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Novosibirsk, 630090, Akad. Lavrentieva 5, Russia
|
| 2 |
Novosibirsk State University, Novosibirsk, 630090, Pirogova 2, Russia
|
|
Информация о финансировании (1)
|
1
|
Федеральное агентство научных организаций России
|
0303-2016-0002
|
The adsorption and textural properties of LSX zeolite after cation exchange both in LiCl and NH4Cl aqueous solutions have been evaluated from elemental analysis, XRD, N2 adsorption at 77K, and CO2 and N2O adsorption at 273K. Incorporation of Li+ and H+ results in a significant decrease of adsorption selectivity towards CO2 in a pressure range 0.01 – 1 Torr compared to the initial LSX in the K-Na form. This feature allows simultaneous quantitative sequestration of CO2 and N2O traces from contaminated gas flows, or can be useful for pre-concentration of these gases prior to catalytic utilization. Above 1 Torr adsorption selectivity rises to 1.0 for the unmodified LSX, but incorporation of Li+ and H+ increases it in the range 5 – 50 Torr, allowing adsorption purification of N2O from CO2 diluted an in inert gas flow
under the applied conditions.