Effect of Number of Hydroxyl Group in Sterically Hindered Alkanolamine on CO2 Capture Activity. (July 2017)

• Record Type: Journal Article
• Authors: Muchan, Pailin; Narku-Tetteh, Jessica; Saiwan, Chintana; Idem, Rapheal; Supap, Teeradet; Tontiwachwuthikul, Paitoon
• Is Part Of: Energy procedia. Volume 114(2017)
• Page Start: 1966
• Page End: 1972
• Publication Date: 2017-07
• Subjects: CO2 capture -- sterically hindered alkanolamines -- heat of absorption -- heat duty -- absorption -- desorption; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2017.03.1328
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: Sterically hindered alkanolamines with different numbers of hydroxyl groups were investigated for the CO2 capture activities. The absorption were performed at 313 K and atmospheric pressure using 15% CO2 whereas the desorption were performed at 363 K and atmospheric pressure. Sterically hindered amine with higher number of hydroxyl groups showed lower performance for all CO2 capture activities. Amine with one hydroxyl group exhibited the best efficiency with CO2 solubility of 0.73 molCO2 /mol amine, initial absorption rate of 1.32 × 10 -2 molCO2 /L-soln.min, initial desorption rate of 5.81 × 10 -2 molCO2 /L-soln.min, heat of absorption of -49.99 kJ/mol, and heat duty of 3.25 kJ/mol.