No Cover Image

Journal article 17 views

CO2 Capture Partner Molecules in Highly Loaded PEI Sorbents / Enrico Andreoli

The Journal of Physical Chemistry C

Swansea University Author: Andreoli, Enrico

Abstract

Decoupling amine loading from diffusion resistance is one of the main challenges in the development of immobilised amines CO2 sorbents. Water has been reported to serve this goal alleviating CO2 diffusional hindrance in highly loaded amine sorbents. Acting as a mass transport facilitator, water is n...

Full description

Published in: The Journal of Physical Chemistry C
ISSN: 1932-7447
Published:
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa35139
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: Decoupling amine loading from diffusion resistance is one of the main challenges in the development of immobilised amines CO2 sorbents. Water has been reported to serve this goal alleviating CO2 diffusional hindrance in highly loaded amine sorbents. Acting as a mass transport facilitator, water is not the only partner molecule able to enhance bulk CO2 diffusion. Herein, we show that the enhancing effect of methanol is comparable to that of water in polyethyleneimine-based sorbents. Other molecules, such as ethanol, isopropanol, and chloroform, were also examined but did not appear to facilitate CO2 transport and uptake. Based on a comparison of the Hansen solubility parameters of these molecules, it appears that polarity plays a crucial role in enhancing CO2 diffusion together with molecular hindrance, and hydrogen bonding to a lesser extent.
College: College of Engineering