The effect of chromium exchange level on the cracking and dehydrocyclization of n‐Heptane on CrHNaY zeolite catalysts. Kinetic and spectroscopic study
作者:
A.L. Agudo,
A. Asensio,
A. Corma,
期刊:
The Canadian Journal of Chemical Engineering
(WILEY Available online 1982)
卷期:
Volume 60,
issue 1
页码: 50-54
ISSN:0008-4034
年代: 1982
DOI:10.1002/cjce.5450600110
出版商: Wiley Subscription Services, Inc., A Wiley Company
数据来源: WILEY
摘要:
AbstractThe influence of the degree of chromium ion exchange on Y zeolites on the catalytic activity for cracking and dehydrocyclization of n‐heptane has been studied at 673, 723 and 748 K and atmospheric pressure in a continuous flow system. The kinetic rate constants and activation energy in absence of decay for the cracking of n‐heptane on the catalysts have been obtained. Measurements of the surface acidity of these catalysts by I.R. spectroscopy of adsorbed pyridine and by titration with n‐butylamine has been carried out. A good correlation between the activity cracking of n‐heptane and the concentration of stronger acid sites (pKa≤ + 1.5) on the chromium‐exchanged Y zeolites has
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