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Title: Adsorption Microcalorimetry of CO 2 in Confined Aminopolymers

Abstract

Aminopolymers confined within mesoporous supports have shown promise as materials for direct capture of CO 2 from ambient air. In spite of this, relatively little is known about the energetics of CO2 binding in these materials, and the limited calorimetric studies published to date have focused on materials made using molecular aminosilanes rather than amine polymers. In this work, poly(ethylenimine) (PEI) is impregnated within mesoporous SBA-15, and the heats of CO 2 adsorption at 30 °C are investigated using a Tian-Calvet calorimeter with emphasis on the role of PEI loading and CO 2 pressure in the compositional region relevant to direct capture of CO 2 from ambient air. In parallel, CO 2 uptakes of these materials are measured using multiple complementary approaches, including both volumetric and gravimetric methods, and distinct changes in uptake as a function of CO 2 pressure and amine loading are observed. The CO 2 sorption behavior is directly linked to textural data describing the porosity and PEI distribution in the materials.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Georgia Inst. of Technology, Atlanta, GA (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Understanding and Control of Acid Gas-induced Evolution of Materials for Energy (UNCAGE-ME)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1388725
Grant/Contract Number:  
SC0012577
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 33; Journal Issue: 1; Related Information: UNCAGE-ME partners with Georgia Institute of Technology (lead); Lehigh University; Oak Ridge National Laboratory; University of Alabama; University of Florida; University of Wisconsin; Washington University in St. Louis; Journal ID: ISSN 0743-7463
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; catalysis (heterogeneous); defects; membrane; carbon capture; materials and chemistry by design; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)

Citation Formats

Potter, Matthew E., Pang, Simon H., and Jones, Christopher W. Adsorption Microcalorimetry of CO 2 in Confined Aminopolymers. United States: N. p., 2016. Web. doi:10.1021/acs.langmuir.6b03793.
Potter, Matthew E., Pang, Simon H., & Jones, Christopher W. Adsorption Microcalorimetry of CO 2 in Confined Aminopolymers. United States. doi:10.1021/acs.langmuir.6b03793.
Potter, Matthew E., Pang, Simon H., and Jones, Christopher W. Fri . "Adsorption Microcalorimetry of CO 2 in Confined Aminopolymers". United States. doi:10.1021/acs.langmuir.6b03793. https://www.osti.gov/servlets/purl/1388725.
@article{osti_1388725,
title = {Adsorption Microcalorimetry of CO 2 in Confined Aminopolymers},
author = {Potter, Matthew E. and Pang, Simon H. and Jones, Christopher W.},
abstractNote = {Aminopolymers confined within mesoporous supports have shown promise as materials for direct capture of CO2 from ambient air. In spite of this, relatively little is known about the energetics of CO2 binding in these materials, and the limited calorimetric studies published to date have focused on materials made using molecular aminosilanes rather than amine polymers. In this work, poly(ethylenimine) (PEI) is impregnated within mesoporous SBA-15, and the heats of CO2 adsorption at 30 °C are investigated using a Tian-Calvet calorimeter with emphasis on the role of PEI loading and CO2 pressure in the compositional region relevant to direct capture of CO2 from ambient air. In parallel, CO2 uptakes of these materials are measured using multiple complementary approaches, including both volumetric and gravimetric methods, and distinct changes in uptake as a function of CO2 pressure and amine loading are observed. The CO2 sorption behavior is directly linked to textural data describing the porosity and PEI distribution in the materials.},
doi = {10.1021/acs.langmuir.6b03793},
journal = {Langmuir},
issn = {0743-7463},
number = 1,
volume = 33,
place = {United States},
year = {2016},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 11 works
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