Synergistic effect of blended primary and secondary amines functionalized onto the silica on CO2 capture performance

• Published in: The Korean journal of chemical engineering Vol. 36; no. 8; pp. 1267 - 1273
• Main Authors: Manianglung, Clinton, Pacia, Rose Mardie, Ko, Young Soo
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.08.2019; Springer Nature B.V; 한국화학공학회
• Subjects: Adsorbents; Adsorption; Amines; Biotechnology; Carbon dioxide; Carbon sequestration; Catalysis; Chemistry; Chemistry and Materials Science; Ethylenediamine; Industrial Chemistry/Chemical Engineering; Materials Science; Moisture content; Reaction Engineering; Silicon dioxide; Sorbents; Synergistic effect; Synthesis; 화학공학; Blended Amine; Incipient Wetness; Amine-functionalized Silica; Adsorption; CO; Capture
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-019-0321-z

Amine-functionalized silica sorbents were synthesized by blending (3-aminopropyl)trimethoxysilane (1NSP) and [3-(methylamino)propyl]trimethoxysilane (1NS-S) of varying proportions and incorporating it in the support via incipient wetness technique. Adsorption characteristics were examined at a design adsorption temperature of 30 oC. The blended amine adsorbents exhibited higher CO 2 adsorption capacity (5.6-6.4 wt%) and CO 2 /N efficiency (0.47-0.48) than 1NS-P and 1NS-S. Among the blended amine adsorbents synthesized in this work, 1NS-PS-50, which has 50% primary amine and 50% secondary amine, is the most ideal for post-combustion CO 2 capture application because it has high CO 2 adsorption capacity, high CO 2 /N efficiency, and better performance than its diamine counterpart, N-[3-(trimethoxysilyl)propyl]ethylenediamine.