5 years ago

CO2 Capture Partner Molecules in Highly Loaded PEI Sorbents

CO2 Capture Partner Molecules in Highly Loaded PEI Sorbents
Enrico Andreoli, Andrew R. Barron, Athanasios Koutsianos
Decoupling amine loading from diffusion resistance is one of the main challenges in the development of immobilized amine 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 polyethylenimine-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.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b07541

DOI: 10.1021/acs.jpcc.7b07541

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.