Role of Lewis Acidity in the Deactivation of USY Zeolites during 2-Methylpentane Cracking

Scott M. Babitz; Mark A. Kuehne; Harold H. Kung; Jeffrey T. Miller

doi:10.1021/ie9606202

Role of Lewis Acidity in the Deactivation of USY Zeolites during 2-Methylpentane Cracking

Scott M. Babitz, Mark A. Kuehne, Harold H. Kung^*, Jeffrey T. Miller

^*Corresponding author for this work

Chemical and Biological Engineering

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

30 Scopus citations

Abstract

The role of strong Lewis acid sites in the deactivation of H-USY zeolite during 2-methylpentane cracking was investigated. NH₃ adsorption microcalorimetry and FTIR of adsorbed NH₃ were used to characterize the acid sites of an H-USY zeolite and another USY sample in which the strong Lewis acid sites were poisoned with ammonia. It was found that poisoning of the Lewis acid sites did not affect the rate of deactivation, the cracking activity, and the distribution of the cracked products. Thus, strong Lewis acid sites are not important in the cracking reaction.

Original language	English (US)
Pages (from-to)	3027-3031
Number of pages	5
Journal	Industrial and Engineering Chemistry Research
Volume	36
Issue number	8
DOIs	https://doi.org/10.1021/ie9606202
State	Published - Aug 1997

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1021/ie9606202

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title = "Role of Lewis Acidity in the Deactivation of USY Zeolites during 2-Methylpentane Cracking",

abstract = "The role of strong Lewis acid sites in the deactivation of H-USY zeolite during 2-methylpentane cracking was investigated. NH3 adsorption microcalorimetry and FTIR of adsorbed NH3 were used to characterize the acid sites of an H-USY zeolite and another USY sample in which the strong Lewis acid sites were poisoned with ammonia. It was found that poisoning of the Lewis acid sites did not affect the rate of deactivation, the cracking activity, and the distribution of the cracked products. Thus, strong Lewis acid sites are not important in the cracking reaction.",

author = "Babitz, {Scott M.} and Kuehne, {Mark A.} and Kung, {Harold H.} and Miller, {Jeffrey T.}",

year = "1997",

month = aug,

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T1 - Role of Lewis Acidity in the Deactivation of USY Zeolites during 2-Methylpentane Cracking

AU - Babitz, Scott M.

AU - Kuehne, Mark A.

AU - Kung, Harold H.

AU - Miller, Jeffrey T.

PY - 1997/8

Y1 - 1997/8

N2 - The role of strong Lewis acid sites in the deactivation of H-USY zeolite during 2-methylpentane cracking was investigated. NH3 adsorption microcalorimetry and FTIR of adsorbed NH3 were used to characterize the acid sites of an H-USY zeolite and another USY sample in which the strong Lewis acid sites were poisoned with ammonia. It was found that poisoning of the Lewis acid sites did not affect the rate of deactivation, the cracking activity, and the distribution of the cracked products. Thus, strong Lewis acid sites are not important in the cracking reaction.

AB - The role of strong Lewis acid sites in the deactivation of H-USY zeolite during 2-methylpentane cracking was investigated. NH3 adsorption microcalorimetry and FTIR of adsorbed NH3 were used to characterize the acid sites of an H-USY zeolite and another USY sample in which the strong Lewis acid sites were poisoned with ammonia. It was found that poisoning of the Lewis acid sites did not affect the rate of deactivation, the cracking activity, and the distribution of the cracked products. Thus, strong Lewis acid sites are not important in the cracking reaction.

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JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 8

ER -

Role of Lewis Acidity in the Deactivation of USY Zeolites during 2-Methylpentane Cracking

Abstract

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