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Infrared Spectroscopic Study of Cross-Linked Polyamines for CO2 Separation

Zhang, Long
http://orcid.org/0000-0003-2770-3593
http://rave.ohiolink.edu/etdc/view?acc_num=akron1367232019

Abstract Details

2013, Master of Science, University of Akron, Polymer Science.
CO2 emission is considered one of the major causes of climate change. The control of CO2 emission is of prime importance. In this thesis, the current researches and progress on the CO2 capture and CO2 capturing materials are reviewed. Polyethylenimine (PEI) has been used as an active species for the preparation of CO2 capture materials. CO2 has a maximum adsorption rate on PEI at 75oC due to the mass transfer limitation through liquid layers. In-situ Fourier Transform Infrared Spectroscopy (FTIR) could be applied to characterize the interactions between CO2 and amines, and to understand the diffusion process of CO2 in the CO2 capture materials. This technique was used to probe the CO2 diffusion process in PEI layers of different thicknesses and in PEI cross-linked with 1,6-hexanediol diacrylate (PEI/HDDA). Preliminary results show a diffusion limitation of CO2 on ~500µm-thick layer of PEI and low CO2 capture capacity on PEI/HDDA. The cross-linking reaction of PEI and HDDA was evaluated with FTIR by monitoring the consumption of the C=O band at 1635 cm-1. This technique was extended to study the effect of pH on the precipitation of silica from sodium silicate solutions. Near infrared spectroscopy results were used to correlate the water content on the silica precipitated at different pH values. PEI and PEI/HDDA will be incorporated with sodium silicate to create hybrid amine/silica networks with enhanced mechanical strength and CO2 transport properties.
Steven Chuang, Dr. (Advisor)
Stephen Cheng, Dr. (Committee Member)
85 p.
Chemical Engineering; Chemistry; Materials Science; Polymers
CO2 Capture; FTIR; Polyethyleneimine

Recommended Citations

Citations

  • Zhang, L. (2013). Infrared Spectroscopic Study of Cross-Linked Polyamines for CO2 Separation [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367232019

    APA Style (7th edition)

  • Zhang, Long. Infrared Spectroscopic Study of Cross-Linked Polyamines for CO2 Separation . 2013. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1367232019.

    MLA Style (8th edition)

  • Zhang, Long. "Infrared Spectroscopic Study of Cross-Linked Polyamines for CO2 Separation ." Master's thesis, University of Akron, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367232019

    Chicago Manual of Style (17th edition)

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© 2013, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.