Development of novel sorbents for removing SO2 from cathode air for fuel cells

Xiaoxing Wang, Xiaoliang Ma, Shuqi Zhao, Bei Wang, Chunshan Song

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nowadays, fuel cells have been considered as a promising device for portable power supply. Almost all fuel cells use air as an oxidant. However, there are many contaminants in the air that may significantly degrade the performance of the fuel cells. Although researchers have realized the significant effect of the contaminants in cathode air on the fuel cell performance, little or no work has been reported on the cleanup of cathode air for fuel cells. In the present paper, we report two novel types of "Molecular Basket" sorbents, PEG(50)/SBA-15 and PEI(50)/SBA-15, for SO2 removal at room temperature. Both sorbents could effectively remove SO2 to at least lower than 0.2 ppmv. It was found that the spent PEG(50)/SBA-15 can be regenerated and the capacity can be completely recovered. Although the sorption capacity of PEI(50)/SBA-15 can be only partly recovered (about one-tenth), the initial capacity for SO2 sorption can reach as high as 136 mg-SO2/g, the highest one ever reported in open literature to the best of our knowledge. Both sorbents are promising for SO2 removal and cleanup of cathode air for fuel cells.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
StatePublished - 2009
Event238th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Washington, DC, United States
Duration: Aug 16 2009Aug 20 2009

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other238th National Meeting and Exposition of the American Chemical Society, ACS 2009
CountryUnited States
CityWashington, DC
Period8/16/098/20/09

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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