title: A solid molecular basket sorbent for CO2 capture from gas streams with low CO2 concentration under ambient conditions.
abstract: In this paper, a solid molecular basket sorbent, 50 wt% PEI/SBA-15, was studied for CO(2) capture from gas streams with low CO(2) concentration under ambient conditions. The sorbent was able to effectively and selectively capture CO(2) from a gas stream containing 1% CO(2) at 75 °C, with a breakthrough and saturation capacity of 63.1 and 66.7 mg g(-1), respectively, and a selectivity of 14 for CO(2)/CO and 185 for CO(2)/Ar. The sorption performance of the sorbent was influenced greatly by the operating temperature. The CO(2)-TPD study showed that the sorbent could be regenerated under mild conditions (50-110 °C) and was stable in the cyclic operations for at least 20 cycles. Furthermore, the possibility for CO(2) capture from air using the PEI/SBA-15 sorbent was studied by FTIR and proved by TPD. A capacity of 22.5 mg g(-1) was attained at 75 °C via a TPD method using a simulated air with 400 ppmv CO(2) in N(2).
authors.affiliation: Clean Fuels and Catalysis Program, Department of Energy & Mineral Engineering, Pennsylvania State University, University Park, PA 16802, USA. xxwang@psu.edu
authors.forename: Xiaoxing
authors.initials: X
authors.lastname: Wang
authors.forename: Xiaoliang
authors.initials: X
authors.lastname: Ma
authors.forename: Viviane
authors.initials: V
authors.lastname: Schwartz
authors.forename: Jason C
authors.initials: JC
authors.lastname: Clark
authors.forename: Steven H
authors.initials: SH
authors.lastname: Overbury
authors.forename: Shuqi
authors.initials: S
authors.lastname: Zhao
authors.forename: Xiaochun
authors.initials: X
authors.lastname: Xu
authors.forename: Chunshan
authors.initials: C
authors.lastname: Song