A solvent extraction method to study the location and concentration of coke formed on zeolite catalysts

S. M. Holmes; A. Garforth; B. Maunders; J. Dwyer

A solvent extraction method to study the location and concentration of coke formed on zeolite catalysts

S. M. Holmes, A. Garforth, B. Maunders, J. Dwyer

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

Abstract

The location and composition of the coke formed over H-ZSM-5 zeolites during the cracking of hexadecane at 350°C and at 20 atmospheres was studied. A solvent extraction technique using two different solvents located the coke either on the external surface or within the pores of the zeolite and GC-MS analysis characterised the soluble coke. Coke was also examined using 13C MAS NMR and high resolution TEM. Substituted benzenes were identified as the major precursors to coke formation, and the external coke had a graphitic structure. The contact time was shown to affect only the rate of formation but not the composition of the coke.

Original language	English
Pages (from-to)	355-372
Number of pages	17
Journal	Applied Catalysis A: General
Volume	151
Issue number	2
Publication status	Published - 10 Apr 1997

Keywords

Deactivation
GC-MS
Graphite
ZSM-5

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title = "A solvent extraction method to study the location and concentration of coke formed on zeolite catalysts",

abstract = "The location and composition of the coke formed over H-ZSM-5 zeolites during the cracking of hexadecane at 350°C and at 20 atmospheres was studied. A solvent extraction technique using two different solvents located the coke either on the external surface or within the pores of the zeolite and GC-MS analysis characterised the soluble coke. Coke was also examined using 13C MAS NMR and high resolution TEM. Substituted benzenes were identified as the major precursors to coke formation, and the external coke had a graphitic structure. The contact time was shown to affect only the rate of formation but not the composition of the coke.",

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T1 - A solvent extraction method to study the location and concentration of coke formed on zeolite catalysts

AU - Holmes, S. M.

AU - Garforth, A.

AU - Maunders, B.

AU - Dwyer, J.

PY - 1997/4/10

Y1 - 1997/4/10

N2 - The location and composition of the coke formed over H-ZSM-5 zeolites during the cracking of hexadecane at 350°C and at 20 atmospheres was studied. A solvent extraction technique using two different solvents located the coke either on the external surface or within the pores of the zeolite and GC-MS analysis characterised the soluble coke. Coke was also examined using 13C MAS NMR and high resolution TEM. Substituted benzenes were identified as the major precursors to coke formation, and the external coke had a graphitic structure. The contact time was shown to affect only the rate of formation but not the composition of the coke.

AB - The location and composition of the coke formed over H-ZSM-5 zeolites during the cracking of hexadecane at 350°C and at 20 atmospheres was studied. A solvent extraction technique using two different solvents located the coke either on the external surface or within the pores of the zeolite and GC-MS analysis characterised the soluble coke. Coke was also examined using 13C MAS NMR and high resolution TEM. Substituted benzenes were identified as the major precursors to coke formation, and the external coke had a graphitic structure. The contact time was shown to affect only the rate of formation but not the composition of the coke.

KW - Deactivation

KW - GC-MS

KW - Graphite

KW - ZSM-5

M3 - Article

VL - 151

SP - 355

EP - 372

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

IS - 2

ER -

A solvent extraction method to study the location and concentration of coke formed on zeolite catalysts

Abstract

Keywords

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