Chemistry, Multidisciplinary
; Green & Sustainable Science & Technology
; Engineering, Chemical
WOS研究方向:
Chemistry
; Science & Technology - Other Topics
; Engineering
英文摘要:
Amine-based postcombustion CO2 capture technology has a great potential to control CO2 emissions but is expensive because a huge amount of thermal energy is required for solvent regeneration due to poor CO2 desorption kinetics. Tertiary amines can be efficiently regenerated, but the poor CO2 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 CO2 capture process. To analyze the catalytic performance, the rate constant for CO2 hydration, CO2 absorption rate, and CO2 desorption rate were experimentally studied. The gathered results suggest that catalyst 2 can improve the CO2 absorption and CO2 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 CO2 capture using tertiary amines.
1.Korea Inst Energy Res, Greenhouse Gas Lab, 152 Gajeong Ro, Daejeon 34129, South Korea 2.Univ Sci & Technol, 217 Gajeong Ro, Daejeon 34113, South Korea 3.VIT Univ, Ctr Nanotechnol Res, Vellore 632014, Tamil Nadu, India 4.Seonam Univ, Dept Environm & Chem Engn, 439 Chunhyang Ro, Namwon 55724, South Korea
Recommended Citation:
Sivanesan, Dharmalingam,Bhatti, Umair H.,Youn, Mm Hye,et al. Catalytic Characteristics of Metal Catalysts and Nitrate Salt of a Tripodal Ligand in a Basic Medium for Postcombustion CO2 Capture Process[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2019-01-01,7(14):11955-11962