The Way to Enhance SAPO-34 Activity and Stability in Methanol-to-Olefin Conversion
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
В печати (In Press),
Оригинальность:
Оригинальная
|
| Журнал |
Journal of Porous Materials
ISSN: 1380-2224
, E-ISSN: 1573-4854
|
| Вых. Данные |
Год: 2023,
DOI:
10.1007/s10934-022-01383-2
|
| Ключевые слова |
SAPO-34; MTO; Silicon content; SiO2/Al2O3 molar ratio; Ultrasonic pre-treatment |
| Авторы |
Shamanaeva Irina A.
1
,
Yu Zhichao
2,3
,
Golodnova Daria A.
4
,
Sladkovskiy Dmitry A.
4
,
Babina Kseniya A.
1
,
Parkhomchuk Ekaterina V.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Lavrentiev Ave. 5, Novosibirsk, Russia 630090
|
| 2 |
Heilongjiang University, 150080 Harbin, People’s Republic of China
|
| 3 |
Novosibirsk State University, Novosibirsk, Russia 630090
|
| 4 |
St. Petersburg State Institute of Technology, Saint Petersburg, Russia 190013
|
|
Информация о финансировании (1)
|
1
|
Министерство науки и высшего образования Российской Федерации
|
0239-2021-0004
|
The study on influence of initial SiO2/Al2O3 ratio and approaches to precursor mixing (conventional mixing with magnetic stirrer and overhead mixing with ultrasonication (US)) on phase, texture and acidity of SAPO-34 and catalytic performance in methanol-to-olefin (MTO) process is presented. Contribution of the amorphous phase in the catalysts were determined using neural network via counting cubic (crystalline) and spherical (amorphous) particles in SEM images. We have found out that ultrasonication pre-treatment improves the crystallinity of SAPO-34 crystals and facilitates silicon incorporation into AlPO framework at higher SiO2/Al2O3 ratio. Acidity of samples synthesized with US pre-treatment is increased comparing with corresponding samples synthesized without US pre-treatment. US-treated catalyst lifetime is also enhanced. As a result, total olefin yield is higher on US-treated catalysts comparing with corresponding SiO2/Al2O3 ratio of non-treated ones.