Long-term deactivation of supported Pt catalysts in the dehydrogenation of methylcyclohexane to toluene

Faisal Alhumaidan; David Cresswell; Arthur Garforth

doi:10.1021/ie1013025

Long-term deactivation of supported Pt catalysts in the dehydrogenation of methylcyclohexane to toluene

Faisal Alhumaidan, David Cresswell, Arthur Garforth

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

Abstract

The kinetics of methylcyclohexane (MCH) dehydrogenation over supported Pt catalysts was successfully described by a non-Langmuirian/noncompetitive Horiuti-Polanyi model (Ind. Eng. Chem. Res., in press). The daily reversible and irreversible deactivation, associated with activity tests, was satisfactorily included in the dehydrogenation model. The objective of this work is to incorporate the long-term deactivation of Pt catalysts, associated with life or deactivation tests, in the kinetic model. This has been successfully achieved by assuming that the long-term deactivation is the sum of two exponential decay processes, one rapid and completed in a few days, while the other is slow with a half-life of weeks to months. © 2010 American Chemical Society.

Original language	English
Pages (from-to)	9764-9770
Number of pages	6
Journal	Industrial and Engineering Chemistry Research
Volume	49
Issue number	20
DOIs	https://doi.org/10.1021/ie1013025
Publication status	Published - 20 Oct 2010

Keywords

Exponential decays
Kinetic models
Methylcyclohexane
Polanyi model
Pt catalysts
Supported Pt
Catalyst activity
Catalyst supports
Dehydrogenation
Platinum
Toluene
Catalyst deactivation

Access to Document

10.1021/ie1013025

http://www.scopus.com/inward/record.url?eid=2-s2.0-77957981398&partnerID=40&md5=a185d89002f4eec0b46fed61cf8d6358

Cite this

@article{3e75f87278974a43bba55bb6504c2682,

title = "Long-term deactivation of supported Pt catalysts in the dehydrogenation of methylcyclohexane to toluene",

abstract = "The kinetics of methylcyclohexane (MCH) dehydrogenation over supported Pt catalysts was successfully described by a non-Langmuirian/noncompetitive Horiuti-Polanyi model (Ind. Eng. Chem. Res., in press). The daily reversible and irreversible deactivation, associated with activity tests, was satisfactorily included in the dehydrogenation model. The objective of this work is to incorporate the long-term deactivation of Pt catalysts, associated with life or deactivation tests, in the kinetic model. This has been successfully achieved by assuming that the long-term deactivation is the sum of two exponential decay processes, one rapid and completed in a few days, while the other is slow with a half-life of weeks to months. {\textcopyright} 2010 American Chemical Society.",

keywords = "Exponential decays, Kinetic models, Methylcyclohexane, Polanyi model, Pt catalysts, Supported Pt, Catalyst activity, Catalyst supports, Dehydrogenation, Platinum, Toluene, Catalyst deactivation",

author = "Faisal Alhumaidan and David Cresswell and Arthur Garforth",

note = "cited By (since 1996) 1",

year = "2010",

month = oct,

day = "20",

doi = "10.1021/ie1013025",

language = "English",

volume = "49",

pages = "9764--9770",

journal = "Industrial and Engineering Chemistry Research",

issn = "1520-5045",

publisher = "American Chemical Society",

number = "20",

}

TY - JOUR

T1 - Long-term deactivation of supported Pt catalysts in the dehydrogenation of methylcyclohexane to toluene

AU - Alhumaidan, Faisal

AU - Cresswell, David

AU - Garforth, Arthur

N1 - cited By (since 1996) 1

PY - 2010/10/20

Y1 - 2010/10/20

N2 - The kinetics of methylcyclohexane (MCH) dehydrogenation over supported Pt catalysts was successfully described by a non-Langmuirian/noncompetitive Horiuti-Polanyi model (Ind. Eng. Chem. Res., in press). The daily reversible and irreversible deactivation, associated with activity tests, was satisfactorily included in the dehydrogenation model. The objective of this work is to incorporate the long-term deactivation of Pt catalysts, associated with life or deactivation tests, in the kinetic model. This has been successfully achieved by assuming that the long-term deactivation is the sum of two exponential decay processes, one rapid and completed in a few days, while the other is slow with a half-life of weeks to months. © 2010 American Chemical Society.

AB - The kinetics of methylcyclohexane (MCH) dehydrogenation over supported Pt catalysts was successfully described by a non-Langmuirian/noncompetitive Horiuti-Polanyi model (Ind. Eng. Chem. Res., in press). The daily reversible and irreversible deactivation, associated with activity tests, was satisfactorily included in the dehydrogenation model. The objective of this work is to incorporate the long-term deactivation of Pt catalysts, associated with life or deactivation tests, in the kinetic model. This has been successfully achieved by assuming that the long-term deactivation is the sum of two exponential decay processes, one rapid and completed in a few days, while the other is slow with a half-life of weeks to months. © 2010 American Chemical Society.

KW - Exponential decays

KW - Kinetic models

KW - Methylcyclohexane

KW - Polanyi model

KW - Pt catalysts

KW - Supported Pt

KW - Catalyst activity

KW - Catalyst supports

KW - Dehydrogenation

KW - Platinum

KW - Toluene

KW - Catalyst deactivation

U2 - 10.1021/ie1013025

DO - 10.1021/ie1013025

M3 - Article

SN - 1520-5045

VL - 49

SP - 9764

EP - 9770

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 20

ER -

Long-term deactivation of supported Pt catalysts in the dehydrogenation of methylcyclohexane to toluene

Abstract

Keywords

Access to Document

Fingerprint

Cite this