We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The Effect Of Ca Doping On The CO2 Hydrogenation Performance Of CaxZn10‐xFe20 Catalysts (x=0, 0.5, 1 and1.5).
- Authors
Cai, Zhenyu; Zhang, Fenglei; Cao, Xinjie; Huang, Yifei; Wang, Danlei; Zhang, Lei; Huang, Kai
- Abstract
In this paper, CaxZn10‐xFe20 catalysts were prepared by the co‐precipitation method and applied to CO2 hydrogenation. The experimental results show that the CO2 conversion of the catalyst Ca1Zn9Fe20 at a Ca doping amount of 1 mmol can reach 57.91 %, which is 13.5 % more than the CO2 conversion of the catalyst Zn10Fe20. Moreover, the catalyst Ca1Zn9Fe20 has the lowest selectivity for both CO and CH4, with 7.40 % and 6.99 %, respectively. The catalysts were characterized by XRD, N2 adsorption‐desorption, CO2‐TPD, H2‐TPR, and XPS. The results demonstrate that the doping of Ca increases the basic sites on the catalyst surface and thus allows the catalyst to adsorb more CO2 to promote the reaction. Besides, the Ca doping amount of 1 mmol can suppress the formation of graphitic carbon on the catalyst surface and prevent the excess graphitic carbon from covering the active site Fe5C2.
- Subjects
CARBON dioxide; CATALYSTS; X-ray diffraction; COPRECIPITATION (Chemistry); METHANE
- Publication
Chemistry - An Asian Journal, 2023, Vol 18, Issue 10, p1
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.202300111