文献类型：期刊文献

英文题名：Potential Application of Alkaline Metal Nitrate-Promoted Magnesium-Based Materials in the Integrated CO2 Capture and Methanation Process

作者：Liu, Wei[1,2];Cai, Yifan[1,2];Luo, Mengjie[1,2];Yang, Ying[1,2];Li, Ping[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake, Shanghai 200237, Peoples R China

年份：2022

卷号：61

期号：7

起止页码：2882

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20220911704745);WOS:【SCI-EXPANDED(收录号:WOS:000766191300020)】；

基金：The authors wish to acknowledge the National Natural Science Foundation of China (nos. 21978090, 22178115, and 21776089).

语种：英文

外文关键词：Magnesium - Nickel compounds - Alumina - Aluminum oxide - Hydrogenation - Sodium nitrate - Catalyst selectivity - Methanation - Carbon dioxide

摘要：An integrated CO2 capture and methanation process with regenerable H-2 is a promising approach to mitigate anthropogenic CO2 emissions. In this integrated process, the development of efficient adsorbents and catalysts is very critical. Here, NaNO3-promoted MgO adsorbents are prepared and shaped into similar to 1.5 mm particles for CO2 capture, and the potential application of NaNO3-MgO adsorbents in the integrated CO2 capture and methanation process is evaluated through experiments. Experimental demonstration is performed in the combined adsorbent/catalyst packed column, where CO2 adsorbents are prepared with 10 mol % NaNO3-promoted MgO and catalysts are prepared with 20 wt % Ni loaded on gamma-Al2O3. The effects of the flowrate of 50% CO2/N-2 feed gas and the flowrate of regenerable H-2 on the CO2 capture and methanation performance are investigated through experiments done in the packed column with 40 g of NaNO3-MgO granules and 30 g of Ni-Al2O3 catalysts. The CO2 recovery rate, CO2 adsorption amount, CO2 conversion rate, and CH4 yield and selectivity will be evaluated based on the experimental results, and the efficiency and feasibility of the integrated CO2 capture and methanation in the combined NaNO3-MgO adsorbent/Ni-Al2O3 catalyst packed column will be assessed.