Electronic density enrichment of Pt catalysts by coke in the propane dehydrogenation
- Electronic density enrichment of Pt catalysts by coke in the propane dehydrogenation
- Bao Khanh Vu; 송명복; 박설아; 이영일; 안인영; 서영웅; 서동진; 김원일; 고형림; 최영교; 신은우
- Electronic Density; Propane Dehydrogenation; Coke Deposition; Supported Pt Catalysts; Deactivation
- Issue Date
- The Korean journal of chemical engineering
- VOL 28, NO 2, 383-387
- 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.
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