Enhanced performance of catalyst pellets for methane dry reforming by engineering pore network structure

Enhanced performance of catalyst pellets for methane dry reforming by engineering pore network structure Научная публикация

Конференция

XXIII International Conference on Chemical Reactors
04-11 нояб. 2018 , Ghent

Журнал

Chemical Engineering Journal
ISSN: 1385-8947

Вых. Данные

Год: 2019, Том: 373, Страницы: 1389-1396 Страниц : 8 DOI: 10.1016/j.cej.2019.03.125

Авторы

Liu Xinlei ¹ , Wang Hailang ¹ , Ye Guanghua ¹ , Zhou Xinggui ¹ , Keil Frerich J. ²

Организации

1	State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
2	Institute of Chemical Reaction Engineering, Hamburg University of Technology, Hamburg D-21073, Germany

Enhancing the utilization and activity of catalytic materials is crucial in designing catalysts for industrial use. This work achieves these performance enhancements in Rh/Al2O3 catalyzed dry reforming of methane (DRM) at the catalyst pellet level, through engineering catalyst pore network structure. A continuum model, describing the coupled mass, heat transfer and reactions, is developed to optimize the monodisperse and bidisperse catalyst pellets under different temperatures, pressures, and CH4/CO2 ratios. The results show that the preferred pore diameter for the monodisperse catalyst and macropore diameter for the bidisperse catalyst are all 300 nm, above which Knudsen diffusion is not important. Besides, the optimal porosities for the monodisperse and bidisperse catalysts are in the ranges of 0.51–0.59 and 0.61–0.64, which is the result of the trade-off between diffusion and reaction. The optimal bidisperse catalyst can be 56–175% more active but uses 10–18% less catalyst materials when compared to the optimal monodisperse catalyst with the same mesopore size, indicating the great advantage of introducing the optimal macroporosity into mesoporous catalyst pellets for DRM. These results should serve to guide the rational design of industrial catalyst pellets.

Liu X. , Wang H. , Ye G. , Zhou X. , Keil F.J.
Enhanced performance of catalyst pellets for methane dry reforming by engineering pore network structure
Chemical Engineering Journal. 2019. V.373. P.1389-1396. DOI: 10.1016/j.cej.2019.03.125 WOS Scopus OpenAlex

Опубликована online:

15 мар. 2019 г.

Web of science:	WOS:000471682900130
Scopus:	2-s2.0-85063161781
OpenAlex:	W2921627719

БД	Цитирований
OpenAlex	30
Scopus	28