Electronic density enrichment of Pt catalysts by coke in the propane dehydrogenation

Title
Electronic density enrichment of Pt catalysts by coke in the propane dehydrogenation
Authors
Bao Khanh Vu송명복박설아이영일안인영서영웅서동진김원일고형림최영교신은우
Keywords
Electronic Density; Propane Dehydrogenation; Coke Deposition; Supported Pt Catalysts; Deactivation
Issue Date
2011-02
Publisher
The Korean journal of chemical engineering
Citation
VOL 28, NO 2, 383-387
Abstract
We investigated the nature of coke generated in propane dehydrogenation over supported Pt catalysts by FTIR, NMR, and XPS. NMR and FTIR spectra proved that the coke produced in the reaction contained poly-aromatic rings, which was consistent with the previous result that pregraphite-like coke structure was formed. The XPS results indicated that the coke deposits consisted of sp2 hybridized carbon. All of the characterizations indicated that the pregraphite- like coke containing the poly-aromatic ring structure was generated over the catalysts during the propane dehydrogenation. Furthermore, the XPS measurement demonstrated that the coke deposits interacted with Pt and the electron density of Pt was enriched through the interaction.
URI
http://pubs.kist.re.kr/handle/201004/39630
ISSN
0256-1115
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KIST Publication > Article
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