Catalytic cracking of a mixture of dodecane and 1,3,5 tri-isopropyl-benzene over USY and ZSM-5 zeolites based catalysts

N. Al-Baghli; S. Al-Khattaf

doi:10.1016/s0167-2991(05)80523-3

Catalytic cracking of a mixture of dodecane and 1,3,5 tri-isopropyl-benzene over USY and ZSM-5 zeolites based catalysts

N. Al-Baghli, S. Al-Khattaf^*

^*Corresponding author for this work

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

4 Scopus citations

Abstract

The reaction of dodecane (C12) and 1,3,5.tri-isopropyl-Benzene (TIPB) was experimentally investigated over catalyst SB (based on USY zeolite) and GKF-3 (based on ZSM5 zeolites). Series of experiments with pure and 50-50 weight percent mixtures of C12 and TIPB were conducted. The reaction conditions were adjusted to simulate a commercial FCC unit at 450 °C, cat/oil ratio of 5, pressure of 1-1.5 bar, and reaction times of 3-15 sec. GKF-3 was observed to give higher C12 conversion compared to SB. On the contrary, the kinetic of TIPB showed a complicated behavior due to the mutual effects of zeolite acidity and pore size. The conversion of pure C12 on SB was observed to be lower than the conversion of TIPB while the opposite was true on GKF-3. This behaviour could be attributed to the higher activation energy of paraffin catalytic cracking compared to alkyl-aromatic dealkylation. While, the conversion of C12 was not affected by the presence of TIPB in both catalysts a huge drop in the conversion of TIPB was observed in the presence of C12 over both catalysts. This indicates that the diffusion of TIPB molecules is the rate determining step.

Original language	English
Pages (from-to)	1661-1668
Number of pages	8
Journal	Studies in Surface Science and Catalysis
Volume	158 B
DOIs	https://doi.org/10.1016/s0167-2991(05)80523-3
State	Published - 2005

Bibliographical note

Funding Information:
The authors gratefully acknowledge King Fahd University of Petroleum & Minerals for the financial support provided for this work under project # 255. We also wish to thank Mr. Mariano Gica and Mr A. Iliyas for their useful collaboration on the experimental work under the same project. Special thanks are due to Dr Shakeel Ahmed for his invaluable assistance and suggestions on TPD measurement.

ASJC Scopus subject areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/s0167-2991(05)80523-3

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title = "Catalytic cracking of a mixture of dodecane and 1,3,5 tri-isopropyl-benzene over USY and ZSM-5 zeolites based catalysts",

abstract = "The reaction of dodecane (C12) and 1,3,5.tri-isopropyl-Benzene (TIPB) was experimentally investigated over catalyst SB (based on USY zeolite) and GKF-3 (based on ZSM5 zeolites). Series of experiments with pure and 50-50 weight percent mixtures of C12 and TIPB were conducted. The reaction conditions were adjusted to simulate a commercial FCC unit at 450 °C, cat/oil ratio of 5, pressure of 1-1.5 bar, and reaction times of 3-15 sec. GKF-3 was observed to give higher C12 conversion compared to SB. On the contrary, the kinetic of TIPB showed a complicated behavior due to the mutual effects of zeolite acidity and pore size. The conversion of pure C12 on SB was observed to be lower than the conversion of TIPB while the opposite was true on GKF-3. This behaviour could be attributed to the higher activation energy of paraffin catalytic cracking compared to alkyl-aromatic dealkylation. While, the conversion of C12 was not affected by the presence of TIPB in both catalysts a huge drop in the conversion of TIPB was observed in the presence of C12 over both catalysts. This indicates that the diffusion of TIPB molecules is the rate determining step.",

author = "N. Al-Baghli and S. Al-Khattaf",

note = "Funding Information: The authors gratefully acknowledge King Fahd University of Petroleum \& Minerals for the financial support provided for this work under project \# 255. We also wish to thank Mr. Mariano Gica and Mr A. Iliyas for their useful collaboration on the experimental work under the same project. Special thanks are due to Dr Shakeel Ahmed for his invaluable assistance and suggestions on TPD measurement.",

year = "2005",

doi = "10.1016/s0167-2991(05)80523-3",

language = "English",

volume = "158 B",

pages = "1661--1668",

journal = "Studies in Surface Science and Catalysis",

issn = "0167-2991",

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TY - JOUR

T1 - Catalytic cracking of a mixture of dodecane and 1,3,5 tri-isopropyl-benzene over USY and ZSM-5 zeolites based catalysts

AU - Al-Baghli, N.

AU - Al-Khattaf, S.

N1 - Funding Information: The authors gratefully acknowledge King Fahd University of Petroleum & Minerals for the financial support provided for this work under project # 255. We also wish to thank Mr. Mariano Gica and Mr A. Iliyas for their useful collaboration on the experimental work under the same project. Special thanks are due to Dr Shakeel Ahmed for his invaluable assistance and suggestions on TPD measurement.

PY - 2005

Y1 - 2005

N2 - The reaction of dodecane (C12) and 1,3,5.tri-isopropyl-Benzene (TIPB) was experimentally investigated over catalyst SB (based on USY zeolite) and GKF-3 (based on ZSM5 zeolites). Series of experiments with pure and 50-50 weight percent mixtures of C12 and TIPB were conducted. The reaction conditions were adjusted to simulate a commercial FCC unit at 450 °C, cat/oil ratio of 5, pressure of 1-1.5 bar, and reaction times of 3-15 sec. GKF-3 was observed to give higher C12 conversion compared to SB. On the contrary, the kinetic of TIPB showed a complicated behavior due to the mutual effects of zeolite acidity and pore size. The conversion of pure C12 on SB was observed to be lower than the conversion of TIPB while the opposite was true on GKF-3. This behaviour could be attributed to the higher activation energy of paraffin catalytic cracking compared to alkyl-aromatic dealkylation. While, the conversion of C12 was not affected by the presence of TIPB in both catalysts a huge drop in the conversion of TIPB was observed in the presence of C12 over both catalysts. This indicates that the diffusion of TIPB molecules is the rate determining step.

AB - The reaction of dodecane (C12) and 1,3,5.tri-isopropyl-Benzene (TIPB) was experimentally investigated over catalyst SB (based on USY zeolite) and GKF-3 (based on ZSM5 zeolites). Series of experiments with pure and 50-50 weight percent mixtures of C12 and TIPB were conducted. The reaction conditions were adjusted to simulate a commercial FCC unit at 450 °C, cat/oil ratio of 5, pressure of 1-1.5 bar, and reaction times of 3-15 sec. GKF-3 was observed to give higher C12 conversion compared to SB. On the contrary, the kinetic of TIPB showed a complicated behavior due to the mutual effects of zeolite acidity and pore size. The conversion of pure C12 on SB was observed to be lower than the conversion of TIPB while the opposite was true on GKF-3. This behaviour could be attributed to the higher activation energy of paraffin catalytic cracking compared to alkyl-aromatic dealkylation. While, the conversion of C12 was not affected by the presence of TIPB in both catalysts a huge drop in the conversion of TIPB was observed in the presence of C12 over both catalysts. This indicates that the diffusion of TIPB molecules is the rate determining step.

UR - https://www.scopus.com/pages/publications/30844445048

U2 - 10.1016/s0167-2991(05)80523-3

DO - 10.1016/s0167-2991(05)80523-3

M3 - Article

AN - SCOPUS:30844445048

SN - 0167-2991

VL - 158 B

SP - 1661

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JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

ER -

Catalytic cracking of a mixture of dodecane and 1,3,5 tri-isopropyl-benzene over USY and ZSM-5 zeolites based catalysts

Abstract

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ASJC Scopus subject areas

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