Dehydrogenation of Methylcyclohexane for On-Board Hydrogen Use

Initial Rate Kinetics Over 1.0 wt% Pt/γ-Al2O3

Muhammad R. Usman, Rabya Aslam

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Dehydrogenation of methylcyclohexane was studied over an in-house developed 1.0 wt% Pt/γ-Al2O3 catalyst. Experiments were conducted at various levels of temperature, pressure, space velocity, and feed composition. With increase in W/FA0, the methylcyclohexane conversion was observed to increase exponentially towards the equilibrium or maximum conversion. The function "exponential rise to maximum" is used to represent the experimental data and initial rates of the reaction were employed to analyze the data. A power law model and two Langmuir-Hinshelwood-Hougen-Watson (LHHW) models (single-site and dual-site) were applied to model the experimental data. Kinetic model equation based on dual-site LHHW was found the most appropriate with activation energy of the reaction system equal to 62.9 kJ/mol.

Original languageEnglish
Pages (from-to)615-620
Number of pages6
JournalArabian Journal for Science and Engineering
Volume39
Issue number2
DOIs
Publication statusPublished - Feb 2014

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Dehydrogenation
Hydrogen
Kinetics
Exponential functions
Activation energy
Catalysts
Chemical analysis
Experiments
Temperature

Keywords

  • Dehydrogenation
  • Hydrogen economy
  • Kinetic modeling
  • Methylcyclohexane
  • The MTH system

ASJC Scopus subject areas

  • General

Cite this

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title = "Dehydrogenation of Methylcyclohexane for On-Board Hydrogen Use: Initial Rate Kinetics Over 1.0 wt{\%} Pt/γ-Al2O3",
abstract = "Dehydrogenation of methylcyclohexane was studied over an in-house developed 1.0 wt{\%} Pt/γ-Al2O3 catalyst. Experiments were conducted at various levels of temperature, pressure, space velocity, and feed composition. With increase in W/FA0, the methylcyclohexane conversion was observed to increase exponentially towards the equilibrium or maximum conversion. The function {"}exponential rise to maximum{"} is used to represent the experimental data and initial rates of the reaction were employed to analyze the data. A power law model and two Langmuir-Hinshelwood-Hougen-Watson (LHHW) models (single-site and dual-site) were applied to model the experimental data. Kinetic model equation based on dual-site LHHW was found the most appropriate with activation energy of the reaction system equal to 62.9 kJ/mol.",
keywords = "Dehydrogenation, Hydrogen economy, Kinetic modeling, Methylcyclohexane, The MTH system",
author = "Usman, {Muhammad R.} and Rabya Aslam",
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TY - JOUR

T1 - Dehydrogenation of Methylcyclohexane for On-Board Hydrogen Use

T2 - Initial Rate Kinetics Over 1.0 wt% Pt/γ-Al2O3

AU - Usman, Muhammad R.

AU - Aslam, Rabya

PY - 2014/2

Y1 - 2014/2

N2 - Dehydrogenation of methylcyclohexane was studied over an in-house developed 1.0 wt% Pt/γ-Al2O3 catalyst. Experiments were conducted at various levels of temperature, pressure, space velocity, and feed composition. With increase in W/FA0, the methylcyclohexane conversion was observed to increase exponentially towards the equilibrium or maximum conversion. The function "exponential rise to maximum" is used to represent the experimental data and initial rates of the reaction were employed to analyze the data. A power law model and two Langmuir-Hinshelwood-Hougen-Watson (LHHW) models (single-site and dual-site) were applied to model the experimental data. Kinetic model equation based on dual-site LHHW was found the most appropriate with activation energy of the reaction system equal to 62.9 kJ/mol.

AB - Dehydrogenation of methylcyclohexane was studied over an in-house developed 1.0 wt% Pt/γ-Al2O3 catalyst. Experiments were conducted at various levels of temperature, pressure, space velocity, and feed composition. With increase in W/FA0, the methylcyclohexane conversion was observed to increase exponentially towards the equilibrium or maximum conversion. The function "exponential rise to maximum" is used to represent the experimental data and initial rates of the reaction were employed to analyze the data. A power law model and two Langmuir-Hinshelwood-Hougen-Watson (LHHW) models (single-site and dual-site) were applied to model the experimental data. Kinetic model equation based on dual-site LHHW was found the most appropriate with activation energy of the reaction system equal to 62.9 kJ/mol.

KW - Dehydrogenation

KW - Hydrogen economy

KW - Kinetic modeling

KW - Methylcyclohexane

KW - The MTH system

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