Study of Catalytic CO2 Absorption and Desorption with Tertiary Amine DEEA and 1DMA-2P with the Aid of Solid Acid and Solid Alkaline Chemicals

Molecules

Paitoon Tontiwachwuthikul¹  Huancong Shi²  Qiming Wu²  Lifeng Cui²  Min Huang²  Linna Zheng²  Shuping Zhang² 

[1] Clean Energy Technology Research Innovation (CETRI), Faculty of Engineering and Applied Science, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada;Department of Environmental Science and Engineering, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China;

关键词: CO2 absorption;    tertiary amines;    CO2 desorption;    energy cost;    equilibrium;    solubility;   

DOI  :  10.3390/molecules24061009

来源: DOAJ

【 摘 要 】

Studies of catalytic CO2 absorption and desorption were completed in two well-performed tertiary amines: diethylmonoethanolamine (DEEA) and 1-dimethylamino-2-propanol (1DMA-2P), with the aid of CaCO3 and MgCO3 in the absorption process, and with the aid of γ-Al2O3 and H-ZSM-5 in the desorption process. The batch process was used for CO2 absorption with solid alkalis, and the recirculation process was used for CO2 desorption with solid acid catalysts. The CO2 equilibrium solubility and pKa were also measured at 293 K with results comparable to the literature. The catalytic tests discovered that the heterogeneous catalysis of tertiary amines on both absorption and desorption sides were quite different from monoethanolamine (MEA) and diethanolamine (DEA). These results were illustrative as a start-up to further study of the kinetics of heterogeneous catalysis of CO2 to tertiary amines based on their special reaction schemes and base-catalyzed hydration mechanism.

【 授权许可】

Unknown