期刊
SUSTAINABLE ENERGY & FUELS
卷 4, 期 9, 页码 4679-4687出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0se00760a
关键词
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资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20182010600530]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20182010600530] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A novel integrated CO(2)capture and utilization (CCU) process for direct methanation was proposed to reduce the total required thermal energy by effectively combining CO(2)capture and conversion using a Ni/CaO catal-sorbent. Compared to the conventional carbonation/decarbonation process, carbonated Ni/CaO catal-sorbents were regenerated by converting captured CO(2)to CH(4)under a H(2)atmosphere at temperatures lower than those required for CO(2)desorption. According to the theoretical and experimental results, the optimum reaction temperature for the novel CCU process was determined at 500 degrees C; while the Ni/CaO catal-sorbent exhibited high CO(2)capture and direct methanation capacity without sintering during consecutive cycle tests at 500 degrees C. Therefore, this new integrated CCU process for direct methanation could be a cost- and energy-effective approach to CH(4)production and climate emergency mitigation.
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