n-Heptane isomerization over Pt/WO3-ZrO2: A kinetic study

Muneeb Khurshid; Sulaiman S. Al-Khattaf

doi:10.1016/j.apcata.2009.08.005

n-Heptane isomerization over Pt/WO₃-ZrO₂: A kinetic study

Muneeb Khurshid
, Sulaiman S. Al-Khattaf^*

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

34 Scopus citations

Abstract

Kinetics of n-C₇ isomerization was investigated over Pt loaded WO₃-ZrO₂ using a fixed-bed reactor under hydrogen pressure and the effect of reaction conditions on the activity of the catalyst towards n-C₇ isomerization and product selectivity was studied. The study shows that the cracked products appear mainly from di-branched isomers of heptane. By controlling the reaction conditions, the octane number of the feed was increased from 0 to 32 with 93% fuel volume recovery. The major product among the mono-branched isomers was 3-methyhexane while 2,3-dimethylpentane was dominant among di-branched isomers. Craking products consisted mainly of propane and isobutane which were produced from dimethylpentanes. Simplified kinetic models were developed based on the reaction conditions. The apparent kinetic parameters for mono-isomerization (M), di-isomerization (D) and cracking (C) reactions were estimated using nonlinear regression analysis. The apparent activation energies were found to decrease as follows: E_C > E_M > E_D.

Original language	English
Pages (from-to)	56-64
Number of pages	9
Journal	Applied Catalysis A: General
Volume	368
Issue number	1-2
DOIs	https://doi.org/10.1016/j.apcata.2009.08.005
State	Published - 31 Oct 2009

Bibliographical note

Funding Information:
The authors express their appreciation to the support from the Ministry of Higher Education , Saudi Arabia in establishment of the Center of Research Excellence in Petroleum Refining and Petrochemicals at King Fahd University of Petroleum & Minerals (KFUPM). The contributions of Dr. Saidu Waziri, Prof. Hideshi Hattori, and Mr. Khurshid Alam are highly acknowledged.

Keywords

Fixed-bed reactor
Kinetic modeling
Platinum promoted tungstated zirconia
n-Heptane isomerization

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2009.08.005

Cite this

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title = "n-Heptane isomerization over Pt/WO3-ZrO2: A kinetic study",

abstract = "Kinetics of n-C7 isomerization was investigated over Pt loaded WO3-ZrO2 using a fixed-bed reactor under hydrogen pressure and the effect of reaction conditions on the activity of the catalyst towards n-C7 isomerization and product selectivity was studied. The study shows that the cracked products appear mainly from di-branched isomers of heptane. By controlling the reaction conditions, the octane number of the feed was increased from 0 to 32 with 93\% fuel volume recovery. The major product among the mono-branched isomers was 3-methyhexane while 2,3-dimethylpentane was dominant among di-branched isomers. Craking products consisted mainly of propane and isobutane which were produced from dimethylpentanes. Simplified kinetic models were developed based on the reaction conditions. The apparent kinetic parameters for mono-isomerization (M), di-isomerization (D) and cracking (C) reactions were estimated using nonlinear regression analysis. The apparent activation energies were found to decrease as follows: EC > EM > ED.",

keywords = "Fixed-bed reactor, Kinetic modeling, Platinum promoted tungstated zirconia, n-Heptane isomerization",

author = "Muneeb Khurshid and Al-Khattaf, \{Sulaiman S.\}",

note = "Funding Information: The authors express their appreciation to the support from the Ministry of Higher Education , Saudi Arabia in establishment of the Center of Research Excellence in Petroleum Refining and Petrochemicals at King Fahd University of Petroleum \& Minerals (KFUPM). The contributions of Dr. Saidu Waziri, Prof. Hideshi Hattori, and Mr. Khurshid Alam are highly acknowledged.",

year = "2009",

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doi = "10.1016/j.apcata.2009.08.005",

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AU - Al-Khattaf, Sulaiman S.

N1 - Funding Information: The authors express their appreciation to the support from the Ministry of Higher Education , Saudi Arabia in establishment of the Center of Research Excellence in Petroleum Refining and Petrochemicals at King Fahd University of Petroleum & Minerals (KFUPM). The contributions of Dr. Saidu Waziri, Prof. Hideshi Hattori, and Mr. Khurshid Alam are highly acknowledged.

PY - 2009/10/31

Y1 - 2009/10/31

N2 - Kinetics of n-C7 isomerization was investigated over Pt loaded WO3-ZrO2 using a fixed-bed reactor under hydrogen pressure and the effect of reaction conditions on the activity of the catalyst towards n-C7 isomerization and product selectivity was studied. The study shows that the cracked products appear mainly from di-branched isomers of heptane. By controlling the reaction conditions, the octane number of the feed was increased from 0 to 32 with 93% fuel volume recovery. The major product among the mono-branched isomers was 3-methyhexane while 2,3-dimethylpentane was dominant among di-branched isomers. Craking products consisted mainly of propane and isobutane which were produced from dimethylpentanes. Simplified kinetic models were developed based on the reaction conditions. The apparent kinetic parameters for mono-isomerization (M), di-isomerization (D) and cracking (C) reactions were estimated using nonlinear regression analysis. The apparent activation energies were found to decrease as follows: EC > EM > ED.

AB - Kinetics of n-C7 isomerization was investigated over Pt loaded WO3-ZrO2 using a fixed-bed reactor under hydrogen pressure and the effect of reaction conditions on the activity of the catalyst towards n-C7 isomerization and product selectivity was studied. The study shows that the cracked products appear mainly from di-branched isomers of heptane. By controlling the reaction conditions, the octane number of the feed was increased from 0 to 32 with 93% fuel volume recovery. The major product among the mono-branched isomers was 3-methyhexane while 2,3-dimethylpentane was dominant among di-branched isomers. Craking products consisted mainly of propane and isobutane which were produced from dimethylpentanes. Simplified kinetic models were developed based on the reaction conditions. The apparent kinetic parameters for mono-isomerization (M), di-isomerization (D) and cracking (C) reactions were estimated using nonlinear regression analysis. The apparent activation energies were found to decrease as follows: EC > EM > ED.

KW - Fixed-bed reactor

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KW - n-Heptane isomerization

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