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Optimization of Cobalt Loading in Co-CeO2 Catalyst for the High Temperature Water-Gas Shift Reaction

Title
Optimization of Cobalt Loading in Co-CeO2 Catalyst for the High Temperature Water-Gas Shift Reaction
Author
전병훈
Keywords
Water-gas shift reaction; Co-CeO2; Cobalt; loading; Dispersion
Issue Date
2017-07
Publisher
SPRINGER/PLENUM PUBLISHERS
Citation
TOPICS IN CATALYSIS, v. 60, no. 9-11, page. 721-726
Abstract
We varied the cobalt loading (10, 15, 25, 35 wt%) to determine the optimum loading in a Co-CeO2 catalytic system used for the high temperature water-gas shift (WGS) reaction. Severe reaction conditions were used to compare the catalytic performances including a very high gas hourly space velocity (142,663 h(-1)) and a high CO concentration (similar to 38%). Among the prepared catalysts, 15% Co-CeO2 exhibited excellent catalytic activity in the temperature range of 350-550 degrees C without promoting the methanation reaction. In addition, this catalyst showed relatively stable activity for 50 h at 400 degrees C. The outstanding performance of 15% Co-CeO2 catalyst is mainly due to the highest amount of dispersed cobalt atoms on the catalyst surface. Additionally, the WGS activity was affected by the oxygen vacancy concentration.
URI
https://link.springer.com/article/10.1007%2Fs11244-017-0776-2https://repository.hanyang.ac.kr/handle/20.500.11754/114995
ISSN
1022-5528; 1572-9028
DOI
10.1007/s11244-017-0776-2
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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