期刊
RENEWABLE ENERGY
卷 145, 期 -, 页码 2715-2722出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2019.08.050
关键词
Waste-derived synthesis gas; High-temperature water-gas shift; Ba promoter; Co/CeO2 catalyst; Stability
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2017R1A2B4007145]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20184030202240]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2019R1I1A3A01061053]
- National Research Foundation of Korea [2018H1A2A1061324, 2019R1I1A3A01061053, 22A20153413355, 21A20130011104, 2017R1A2B4007145] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The loading amount of Ba promoter in the 15 wt% Co/CeO2 catalyst system was varied from 0 wt% to 3 wt %, and the resulting catalysts were used for the high-temperature water-gas shift (HTS) reaction. The catalysts were prepared by the incipient wetness co-impregnation method and studied through various characterization techniques such as X-ray diffraction, Brunauer-Emmet-Teller measurements, CO-chemisorption, H-2-temperature programmed reduction, X-ray photoelectron spectroscopy, and transmission electron microscopy. The doping of Ba as a promoter in the optimal amount (1-2 wt%) improves the reducibility of the catalyst and enhances its sintering resistance. However, the doping of an excessive amount (>= 3 wt%) of the promoter lowers the reducibility of the catalyst, resulting in the instability of the active phase (Co-0). Overall, the 1% BaCo/CeO2 catalyst exhibited the best performance even at a severe reaction condition (CO conc. = 38%, GHSV = 143,000 h(-1)) owing to the strong resistance to the sintering and high stability of the active phase. (c) 2019 Elsevier Ltd. All rights reserved.
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