Prerequisites for kinetic modeling of TPD data of porous catalysts-Exemplified by toluene/H-ZSM-5 system

J. M. Kanervo; S. Kouva; K. J. Kanervo; R. Kolvenbach; A. Jentys; J. A. Lercher

doi:10.1016/j.ces.2015.07.032

Prerequisites for kinetic modeling of TPD data of porous catalysts-Exemplified by toluene/H-ZSM-5 system

J. M. Kanervo, S. Kouva, K. J. Kanervo, R. Kolvenbach, A. Jentys, J. A. Lercher

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

11 Scopus citations

Abstract

Temperature-programmed desorption (TPD) is addressed as a transient kinetic tool to understand chemical and physical processes on heterogeneous catalysts. The two main implementations of TPD (atmospheric flow-through TPD and vacuum TPD) require different considerations and models. In this work a systematized process of TPD modeling is presented, a set of preliminary experiments is proposed for collecting data free of artifacts, and a scheme for selecting a suitable reactor/cell model is developed. The reactor model selection and mathematical modeling are demonstrated for interaction of toluene with H-ZSM-5 catalyst measured in both types of setups. Novel models for interpreting TPD data are presented and applied to determine parameters for sorption and diffusion in a zeolite pellet. Intrinsic descriptions and determined parameters agree for different TPD systems, underlining the significance of valid reactor/cell models.

Original language	English
Pages (from-to)	807-815
Number of pages	9
Journal	Chemical Engineering Science
Volume	137
DOIs	https://doi.org/10.1016/j.ces.2015.07.032
State	Published - 1 Dec 2015

Keywords

Continuum models
Mesopore diffusion
Sorption
TPD
Transient kinetics
Zeolites

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10.1016/j.ces.2015.07.032

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title = "Prerequisites for kinetic modeling of TPD data of porous catalysts-Exemplified by toluene/H-ZSM-5 system",

abstract = "Temperature-programmed desorption (TPD) is addressed as a transient kinetic tool to understand chemical and physical processes on heterogeneous catalysts. The two main implementations of TPD (atmospheric flow-through TPD and vacuum TPD) require different considerations and models. In this work a systematized process of TPD modeling is presented, a set of preliminary experiments is proposed for collecting data free of artifacts, and a scheme for selecting a suitable reactor/cell model is developed. The reactor model selection and mathematical modeling are demonstrated for interaction of toluene with H-ZSM-5 catalyst measured in both types of setups. Novel models for interpreting TPD data are presented and applied to determine parameters for sorption and diffusion in a zeolite pellet. Intrinsic descriptions and determined parameters agree for different TPD systems, underlining the significance of valid reactor/cell models.",

keywords = "Continuum models, Mesopore diffusion, Sorption, TPD, Transient kinetics, Zeolites",

author = "Kanervo, {J. M.} and S. Kouva and Kanervo, {K. J.} and R. Kolvenbach and A. Jentys and Lercher, {J. A.}",

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doi = "10.1016/j.ces.2015.07.032",

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T1 - Prerequisites for kinetic modeling of TPD data of porous catalysts-Exemplified by toluene/H-ZSM-5 system

AU - Kanervo, J. M.

AU - Kouva, S.

AU - Kanervo, K. J.

AU - Kolvenbach, R.

AU - Jentys, A.

AU - Lercher, J. A.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Temperature-programmed desorption (TPD) is addressed as a transient kinetic tool to understand chemical and physical processes on heterogeneous catalysts. The two main implementations of TPD (atmospheric flow-through TPD and vacuum TPD) require different considerations and models. In this work a systematized process of TPD modeling is presented, a set of preliminary experiments is proposed for collecting data free of artifacts, and a scheme for selecting a suitable reactor/cell model is developed. The reactor model selection and mathematical modeling are demonstrated for interaction of toluene with H-ZSM-5 catalyst measured in both types of setups. Novel models for interpreting TPD data are presented and applied to determine parameters for sorption and diffusion in a zeolite pellet. Intrinsic descriptions and determined parameters agree for different TPD systems, underlining the significance of valid reactor/cell models.

AB - Temperature-programmed desorption (TPD) is addressed as a transient kinetic tool to understand chemical and physical processes on heterogeneous catalysts. The two main implementations of TPD (atmospheric flow-through TPD and vacuum TPD) require different considerations and models. In this work a systematized process of TPD modeling is presented, a set of preliminary experiments is proposed for collecting data free of artifacts, and a scheme for selecting a suitable reactor/cell model is developed. The reactor model selection and mathematical modeling are demonstrated for interaction of toluene with H-ZSM-5 catalyst measured in both types of setups. Novel models for interpreting TPD data are presented and applied to determine parameters for sorption and diffusion in a zeolite pellet. Intrinsic descriptions and determined parameters agree for different TPD systems, underlining the significance of valid reactor/cell models.

KW - Continuum models

KW - Mesopore diffusion

KW - Sorption

KW - TPD

KW - Transient kinetics

KW - Zeolites

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SN - 0009-2509

VL - 137

SP - 807

EP - 815

JO - Chemical Engineering Science

JF - Chemical Engineering Science

ER -

Prerequisites for kinetic modeling of TPD data of porous catalysts-Exemplified by toluene/H-ZSM-5 system

Abstract

Keywords

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