Dynamic Removal of CO₂ on MDEA-Loaded SBA-15 for Biogas Upgrading

Abstract:

A promising adsorbent for CO₂ removal was prepared by introducing methyl-diethyl-amine (MDEA) into mesoporous silica SBA-15 using impregnation method. The MDEA modified adsorbents were characterized by X-ray powder diffraction (XRD) and nitrogen adsorption/desorption. Surface area, pore size and pore volume of MDEA-modified SBA-15 adsorbent decreased with the increasing of MDEA loading, while the loaded MDEA could not change the structure of the adsorbents. The adsorption performance of CO₂ on the adsorbents was conducted in a dynamic setup. Dynamic adsorption performance changed with change of the amount of loaded MDEA. In addition, not only the adsorbent was regenerable by purging with the purified gas, but also the adsorption performance is stable in adsorption cycles. The results indicated that the MDEA modified adsorbents were novel for removing CO₂ for biogas upgrading.

• Periodical: Advanced Materials Research (Volumes 204-210)
• Pages: 1245-1249
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.204-210.1245
• Online since: February 2011
• Authors: Quan Min Xue, Ying Shu Liu, Peng Huo
• Keywords: Biogas, Breakthrough, Carbon Dioxide CO₂, MDEA, SBA-15

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