Modified temperature programmed desorption evaluation of hydrocarbon trapping by CsMOR zeolite under cold start conditions

Paul J. Wesson, Randall Q. Snurr*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A cesium-exchanged mordenite zeolite was tested as a hydrocarbon trap for cold-start automotive applications using a modified temperature programmed desorption (TPD) procedure. In the modified TPD procedure, a step increase in feed concentration was performed simultaneously with the start of the temperature ramp to more closely mimic cold start conditions. The feed stream contained mixtures of toluene, propane, and water. The cesium-exchanged mordenite trapped propane under these dynamic conditions, demonstrated improved propane trapping when toluene was coadsorbed, and retained its trapping capacity after nearly 40 h of hydrothermal treatment.

Original languageEnglish (US)
Pages (from-to)35-38
Number of pages4
JournalMicroporous and Mesoporous Materials
Volume125
Issue number1-2
DOIs
StatePublished - Oct 1 2009

Keywords

  • Cold start
  • Hydrocarbon trap
  • Mordenite
  • Single-file diffusion
  • Temperature programmed desorption

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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