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Total Oxidation of Ethanol and Toluene over Ceria-Zirconia Supported Platinum Catalysts.

SYSNO ASEP	0459308
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Total Oxidation of Ethanol and Toluene over Ceria-Zirconia Supported Platinum Catalysts.
Author(s)	Topka, Pavel (UCHP-M)_{RID, ORCID, SAI} Kaluža, Luděk (UCHP-M)_{RID, ORCID, SAI} Gaálová, Jana (UCHP-M)_{RID, SAI, ORCID}
Source Title	Chemical Papers. - : Springer - ISSN 0366-6352 Roč. 70, č. 7 (2016), s. 898-906
Number of pages	9 s.
Language	eng - English
Country	SK - Slovakia
Keywords	oxidation ; volatile organic compounds ; platinum
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
R&D Projects	GP13-24186P GA ČR - Czech Science Foundation (CSF)
Institutional support	UCHP-M - RVO:67985858
UT WOS	000379757200004
EID SCOPUS	85010377827
DOI	10.1515/chempap-2016-0028
Annotation	The effect of platinum loading (0.09 - 1.00 wt. %) on the performance of ceria-zirconia supported catalysts in total oxidation of ethanol and toluene in air was investigated. The introduction of platinum promoted the reduction of surface ceria and decreased the acidity of the catalysts. In ethanol oxidation, the temperature of 50 % conversion decreased with increasing platinum content. This increase in catalytic performance was more pronounced for the catalysts with 0.59 and 1.00 wt. % Pt. On the other hand, higher amount of by-products (mainly acetaldehyde) was observed at increased platinum loadings. For all catalysts, a correlation between their H2-TPR profiles and catalytic performance was revealed. In toluene oxidation, only the catalysts with 0.59 and 1.00 wt. % Pt exhibited lower temperature of 50 % conversion than pristine ceriazirconia. The effect of platinum loading was less pronounced than in ethanol oxidation and the correlation between reduction behaviour and catalytic performance was not observed. The superior catalytic performance of the catalysts with 0.59 and 1.00 wt. % of Pt in both ethanol and toluene oxidation was ascribed to the presence of larger platinum nanoparticles, which were not observed at lower Pt loadings.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2017

Number of the records: 1