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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Catalytic Characteristics of Metal Catalysts and Nitrate Salt of a Tripodal Ligand in a Basic Medium for Postcombustion CO2 Capture Process
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Catalytic Characteristics of Metal Catalysts and Nitrate Salt of a Tripodal Ligand in a Basic Medium for Postcombustion CO2 Capture Process

机译:黄金催化剂的催化特性及三码头配体培养基培养基中的三码型CO2捕获过程中的催化特性

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摘要

Amine-based postcombustion CO_(2) capture technology has a great potential to control CO_(2) emissions but is expensive because a huge amount of thermal energy is required for solvent regeneration due to poor CO_(2) desorption kinetics. Tertiary amines can be efficiently regenerated, but the poor CO_(2) absorption kinetics are a major limitation to its large-scale deployment. Here, we synthesized tripodal nitrate salt and its metal catalysts and investigated catalytic activity in a highly concentrated tertiary amine medium, N -methyldiethanolamine (MDEA), for the CO_(2) capture process. To analyze the catalytic performance, the rate constant for CO_(2) hydration, CO_(2) absorption rate, and CO_(2) desorption rate were experimentally studied. The gathered results suggest that catalyst 2 can improve the CO_(2) absorption and CO_(2) desorption efficiencies by 35% and 21%, respectively. On the basis of the obtained results, the possible reaction mechanism is also presented. These findings can provide a new route for energy-efficient CO_(2) capture using tertiary amines.
机译:基于胺类的后COMSTION CO_(2)捕获技术具有控制CO_(2)排放的潜力很大,但昂贵,因为由于CO_(2)解吸动力学差,溶剂再生需要大量的热能。叔胺可以有效地再生,但差的CO_(2)吸收动力学是对其大规模部署的主要限制。这里,我们在高浓度的叔胺培养基中,在高浓缩的叔胺培养基中得到了三款硝酸盐和其金属催化剂,并为CO_(2)捕获方法,研究了催化活性。为了分析催化性能,研究了CO_(2)水合,CO_(2)吸收率和CO_(2)解吸速率的速率常数。聚集的结果表明,催化剂 2可以分别将CO_(2)吸收和CO_(2)解吸效率分别提高35%和21%。在得到的结果的基础上,还提出了可能的反应机制。这些发现可以使用第三胺提供节能CO_(2)捕获的新路线。

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