Coke formation through the reaction of olefins over hydrogen mordenite. II. In situ EPR measurements under on-stream conditions
Authors:
- H.G. Karge,
- J.-P. Lange,
- A. Gutsze,
- Marek Łaniecki
Abstract
Depending on the reaction temperature, the carbonization of ethylene over hydrogen mordenite led to low-temperature coke radicals (below about 500 K) or high-temperature coke radicals (above about 500 K). The formation of low-temperature coke radicals, which are olefinic or allylic oligomeric species, is favored by an increase in the acidity of the zeolite catalyst. In the formation of high-temperature coke radicals, which are highly unsaturated species, homolytic bond splitting of carbonaceous deposits may be involved. The acidity of the zeolite affected the formation of the high-temperature coke radicals in a complex way. A comparison between EPR and thermogravimetric measurements showed a good linear correlation between the number of radicals and the amount of coke formed at high temperature. © 1988.
- Record ID
- UAM0fd0729e540c4a499455afb803fab61c
- Author
- Journal series
- Journal of Catalysis, ISSN 0021-9517
- Issue year
- 1988
- Vol
- 114
- Pages
- 144-152
- ASJC Classification
- ;
- DOI
- DOI:10.1016/0021-9517(88)90016-4 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 45
- Score source
- journalList
- Publication indicators
- = 72; : 1999 = 1.938; : 2006 (2 years) = 4.533 - 2007 (5 years) =5.110
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- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAM0fd0729e540c4a499455afb803fab61c/
- URN
urn:amu-prod:UAM0fd0729e540c4a499455afb803fab61c
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.