Adsorption of nitrogen oxides by the moisture-saturated zeolites in gas stream

Jing Yang, Ting Ting Zhuang, Feng Wei, Yu Zhou, Yi Cao, Zheng Ying Wu, Jian Hua Zhu, Chuan Liu

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

This investigation examined the instantaneous adsorption of NOx by moisture-saturated zeolites at ambient temperature. Among the zeolites studied, Faujasite exhibited the highest adsorption capacity owing to its relatively large pore size. Besides, the influence of cation was demonstrated by comparing the adsorption of zeolites with different cation densities (NaX vs. NaY, mesoporous silica MCM-48-like vs. Faujasite) and treatments (ion exchange of NaY with Cu2+). For the adsorption of NO, the effects of gas flow rates and pre-adsorbed hydrocarbons such as benzene, acetaldehyde or 1,3-butadiene were evaluated. It was proven that zeolite could efficiently capture nitrogen oxides in gas stream even it had been saturated by moisture, which will be valuable for the protection of environment and public health.

Original languageEnglish
Pages (from-to)866-873
Number of pages8
JournalJournal of Hazardous Materials
Volume162
Issue number2-3
DOIs
StatePublished - 15 Mar 2009
Externally publishedYes

Keywords

  • Adsorption
  • CuO modification
  • NO
  • NaX
  • NaY

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