Issue 3, 2015

Relationship between activation energy and pre-exponential factor normalized by the number of Brønsted acid sites in cracking of short chain alkanes on zeolites

Abstract

The rates of the reaction of C3 to C8 linear and C4 and C5 monomethyl-branched alkanes catalysed by various zeolites (FAU, *BEA, MFI and MOR) were analysed. The pre-exponential factor, normalized by the number of Brønsted acid sites, showed a compensatory change in the activation energy. The lower activation energy gave a lower pre-exponential factor, indicating the compensation effect between the activation energy and entropy. The relationship between the pre-exponential factor and the activation energy was common in the reaction of butane, pentane, hexane, octane and 2-methylbutane over various catalysts, while propane and 2-methylpropane had pre-exponential factors lower than those observed in the reactions of other alkanes.

Graphical abstract: Relationship between activation energy and pre-exponential factor normalized by the number of Brønsted acid sites in cracking of short chain alkanes on zeolites

Supplementary files

Article information

Article type
Paper
Submitted
11 Nov 2014
Accepted
08 Dec 2014
First published
09 Dec 2014

Catal. Sci. Technol., 2015,5, 1864-1869

Author version available

Relationship between activation energy and pre-exponential factor normalized by the number of Brønsted acid sites in cracking of short chain alkanes on zeolites

N. Katada, S. Sota, N. Morishita, K. Okumura and M. Niwa, Catal. Sci. Technol., 2015, 5, 1864 DOI: 10.1039/C4CY01483A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements