Nanoporous molecular basket sorbent for NO2 and SO2 capture based on a polyethylene glycol-loaded mesoporous molecular sieve

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

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36 Scopus citations

Abstract

A novel type of nanoporous molecular basket sorbent (MBS) has been designed for NO2 and SO2 capture and separation from gas streams at room temperature based on polyethylene glycol (PEG)-loaded mesoporous molecular sieve SBA-15. The MBS material prepared, PEG(50)/SBA-15, is a nanoporous composite of 50 wt% PEG and SBA-15. The sorption capacity and selectivity of PEG(50)/SBA-15 have been evaluated for NO2 and SO 2 removal from the simulated gas streams in a fixed-bed flow sorption system at room temperature under atmospheric pressure. It was found that the PEG(50)/SBA-15 sorbent is capable of efficiently removing >99.6% of NO 2 and SO2 in gas mixtures, i.e., from 2000 to below 5 ppmv NO2 in N2 and from 500 to below 2 ppmv SO2 in N2, respectively, at ambient conditions with high capacity and selectivity. In addition, the spent sorbent can be regenerated easily and completely by heating to 100 °C. With this new approach, the present study may open a new window for developing high-performance sorbents for SO 2 and NO2 removal from various gas streams.

Original languageEnglish (US)
Pages (from-to)878-882
Number of pages5
JournalEnergy and Environmental Science
Volume2
Issue number8
DOIs
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

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