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

Paul J. Wesson; Randall Q. Snurr

doi:10.1016/j.micromeso.2009.03.026

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

Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

20 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 language	English (US)
Pages (from-to)	35-38
Number of pages	4
Journal	Microporous and Mesoporous Materials
Volume	125
Issue number	1-2
DOIs	https://doi.org/10.1016/j.micromeso.2009.03.026
State	Published - 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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10.1016/j.micromeso.2009.03.026

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title = "Modified temperature programmed desorption evaluation of hydrocarbon trapping by CsMOR zeolite under cold start conditions",

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.",

keywords = "Cold start, Hydrocarbon trap, Mordenite, Single-file diffusion, Temperature programmed desorption",

author = "Wesson, {Paul J.} and Snurr, {Randall Q.}",

note = "Funding Information: The work was supported by the NSF through Grant CTS-0302428. We thank Prof. J{\"o}rg K{\"a}rger for stimulating our thinking about single-file diffusion in zeolites and for many years of enjoyable collaborations and discussions.",

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doi = "10.1016/j.micromeso.2009.03.026",

language = "English (US)",

volume = "125",

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T1 - Modified temperature programmed desorption evaluation of hydrocarbon trapping by CsMOR zeolite under cold start conditions

AU - Wesson, Paul J.

AU - Snurr, Randall Q.

N1 - Funding Information: The work was supported by the NSF through Grant CTS-0302428. We thank Prof. Jörg Kärger for stimulating our thinking about single-file diffusion in zeolites and for many years of enjoyable collaborations and discussions.

PY - 2009/10/1

Y1 - 2009/10/1

N2 - 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.

AB - 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.

KW - Cold start

KW - Hydrocarbon trap

KW - Mordenite

KW - Single-file diffusion

KW - Temperature programmed desorption

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DO - 10.1016/j.micromeso.2009.03.026

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SN - 1387-1811

VL - 125

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JO - Zeolites

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

Abstract

Keywords

ASJC Scopus subject areas

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