A solid molecular basket sorbent for CO2 capture from gas streams with low CO2 concentration under ambient conditions

Xiaoxing Wang; Xiaoliang Ma; Viviane Schwartz; Jason C. Clark; Steven H. Overbury; Shuqi Zhao; Xiaochun Xu; Chunshan Song

doi:10.1039/C1CP23366A

A solid molecular basket sorbent for CO₂ capture from gas streams with low CO₂ concentration under ambient conditions

Xiaoxing Wang,*^a Xiaoliang Ma,^a Viviane Schwartz,^b Jason C. Clark,†^b Steven H. Overbury,^b Shuqi Zhao,^a Xiaochun Xu ‡^a and Chunshan Song*^a

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* Corresponding authors

^a Clean Fuels and Catalysis Program, EMS Energy Institute, and Department of Energy & Mineral Engineering, Pennsylvania State University, 209 Academic Projects Building, University Park, USA
E-mail: xxwang@psu.edu, csong@psu.edu
Fax: +1 814 865 3573
Tel: +1 814 863 4466

^b Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, USA

Abstract

In this paper, a solid molecular basket sorbent, 50 wt% PEI/SBA-15, was studied for CO₂ capture from gas streams with low CO₂ concentration under ambient conditions. The sorbent was able to effectively and selectively capture CO₂ from a gas stream containing 1% CO₂ 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 CO₂/CO and 185 for CO₂/Ar. The sorption performance of the sorbent was influenced greatly by the operating temperature. The CO₂-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 CO₂ 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 CO₂ in N₂.

Article information

https://doi.org/10.1039/C1CP23366A

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Paper

Submitted

12 Aug 2011

Accepted

17 Nov 2011

First published

18 Nov 2011

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Phys. Chem. Chem. Phys., 2012,14, 1485-1492

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A solid molecular basket sorbent for CO₂ capture from gas streams with low CO₂ concentration under ambient conditions

X. Wang, X. Ma, V. Schwartz, J. C. Clark, S. H. Overbury, S. Zhao, X. Xu and C. Song, Phys. Chem. Chem. Phys., 2012, 14, 1485 DOI: 10.1039/C1CP23366A

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Physical Chemistry Chemical Physics

A solid molecular basket sorbent for CO₂ capture from gas streams with low CO₂ concentration under ambient conditions

Abstract

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A solid molecular basket sorbent for CO₂ capture from gas streams with low CO₂ concentration under ambient conditions

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