Minimizing solvent degradation and corrosion using multifunctional Additive

Payal A. Chandan, Fon Rogers, Saloni Bhatnagar, James Landon, Kunlei Liu

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


Solvent degradation and metal corrosion are critical concerns of a post-combustion CO2 capture process. Systemic analysis indicated that oxidation, nitrosation, and corrosion reactions occur or initiatethrough a radical reaction and thus addition of a radical scavenger is expected to work effectively to avoid these reactions. Here, for the first time, a multifunctional organic compound (CAER additive) has been evaluated as an inhibitor. The corrosion rate of A106 in 5 mol/kg MEA was lowered by one order of magnitude when 5mM inhibitor was added. Oxidation of 5 mol/kg MEA was monitored based on accumulation of formate concentration in the solution and formate levels were below the detection limit when CAER additive was present. Furthermore, the same additive was found to inhibit nitrosation of 5 mol/kgmorpholine with 100 ppm of NO2 gas by 91% in 6 h.

Original languageEnglish
Pages (from-to)814-821
Number of pages8
JournalEnergy Procedia
StatePublished - 2014
Event12th International Conference on Greenhouse Gas Control Technologies, GHGT 2014 - Austin, United States
Duration: Oct 5 2014Oct 9 2014

Bibliographical note

Funding Information:
The authors acknowledge the Carbon Management Research Group (CMRG) members, including Duke Energy, Electric Power Research Institute (EPRI), Kentucky Department of Energy Development and Independence (KY-DEDI), Kentucky Power (AEP), and LG&E and KU Energy, for their financial support.

Publisher Copyright:
© 2014 The Authors. Published by Elsevier Ltd.


  • CO capture
  • Corrosion
  • Multi-functionalinhibitor
  • Nitrosamine
  • Oxidation
  • Solvent degradation

ASJC Scopus subject areas

  • Energy (all)


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