Inhibitors of Oxidative Degradation of Polyamine-Modified Silica Sorbents for CO2 Capture

Amine-functionalized materials have been widely investigated as promising candidates for CO2 capture. However, they are prone to degradation in the presence of O2, resulting in loss in the CO2 capture ability as well as a decrease in the sorbent lifetime. In this study, we evaluated the effect of different oxidation inhibitors on degradation of polyamines, including tetraethylenepentamine- and polyethylenimine-impregnated mesoporous silica. Sulfur-containing compounds and traditional antioxidants were selected as additives. Oxidative degradation tests of the amine solid sorbents were performed in a packed-bed reactor equipped with a temperature controller. The results showed that traditional antioxidants, such as butylated hydroxytoluene, N,N′-diphenyl-1,4-phenylenediamine, N,N′-di-2-butyl-1,4-phenylenediamine, 2,2′-thiodiethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], catalyzed oxidative degradation. In contrast...

• Publication year

  2019

• Venue

  Industrial & Engineering Chemistry Research

• Publication date

  2019-08-05

• Fields of study

  Materials Science, Chemistry, Environmental Science

• Identifiers
  DOI 10.1021/ACS.IECR.9B02742
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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