Mechanism and Kinetics of Ethanol Oxidation over Ru(Pt) Supported onto Mn-Cr-O Mixed Oxides Full article
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Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212 |
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| Output data | Year: 2018, Volume: 333, Pages: 101-110 Pages count : 10 DOI: 10.1016/j.cej.2017.09.100 | ||||
| Tags | 18O SSITKA, Ethanol oxidation, Mechanism, Pt(Ru)/Mn-Cr-O, Syngas | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0013 |
| 2 | Federal Agency for Scientific Organizations | 0303-2016-0010 |
Abstract:
Mn-Cr-O mixed oxide (SP) and 2%Pt/SP and 2%Ru/SP samples prepared by incipient wetness impregnation of SP with RuCl3 or H2PtCl6 water solutions were tested in ethanol oxidation (ORE, 1.6%C2H5OH + 0.58%O2 in He) and water gas shift (WGSR, 1.2%CO + 1.2%H2O in He) reactions at 400 °C and 550 °C. At close ethanol conversion over all samples, 2%Ru/SP exhibited the highest selectivity towards CO and H2 and the best activity in WGSR. Analysis of isotope responses during C2H5OH + 16O2/C2H5OH + 18O2 and C2H5OH + 16(18)O2/16(18)O2 switches revealed formation of both CO and CO2 from the same intermediate – CH3CHO. At this, oxygen in CO comes from CH3CHO, while in CO2 – from the catalyst. Final CO/CO2 and H2/H2O ratios are determined by WGSR which obeys redox mechanism. It is faster reoxidation of Run+ by H2O (and probably, CO2) that is responsible for highest yield of syngas products on 2%Ru/SP sample.
Cite:
Pinaeva L.G.
, Sadovskaya E.M.
, Smal E.A.
, Bobin A.S.
, Sadykov V.A.
Mechanism and Kinetics of Ethanol Oxidation over Ru(Pt) Supported onto Mn-Cr-O Mixed Oxides
Chemical Engineering Journal. 2018. V.333. P.101-110. DOI: 10.1016/j.cej.2017.09.100 WOS Scopus РИНЦ AN OpenAlex
Mechanism and Kinetics of Ethanol Oxidation over Ru(Pt) Supported onto Mn-Cr-O Mixed Oxides
Chemical Engineering Journal. 2018. V.333. P.101-110. DOI: 10.1016/j.cej.2017.09.100 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Aug 22, 2017 |
| Accepted: | Sep 15, 2017 |
| Published online: | Sep 18, 2017 |
| Published print: | Feb 1, 2018 |
Identifiers:
| Web of science: | WOS:000417304500012 |
| Scopus: | 2-s2.0-85033567477 |
| Elibrary: | 31052475 |
| Chemical Abstracts: | 2017:1586658 |
| OpenAlex: | W2756300723 |