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Mechanisms and Reaction Pathways in MEA Degradation; A Computational Study

Abstract

The mechanistic details on formation of HEGly and HEPO in MEA degradation are studied using the ab initio and density functional theory methods. The energetics of various pathways leading to formation of HEGly and HEPO are investigated. The addition of glyoxalic acid to MEA and simultaneous proton transfer results in a carbinolamine intermediate. This intermediate undergoes dehydration to generate zwitterion or imine. The hydrogenation of the resulting imine or zwitterion to form HEGly is found to be the rate determining step of the reaction.

Category

Academic article

Language

English

Author(s)

Affiliation

  • Norwegian University of Science and Technology
  • SINTEF Industry / Process Technology

Year

2014

Published in

Energy Procedia

ISSN

1876-6102

Publisher

Elsevier

Volume

63

Page(s)

1115 - 1121

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