n-Pentane Isomerization over Pt/WOx/ZrO2 Catalysts: A 1H and 13C NMR Study Full article
Journal |
Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694 |
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Output data | Year: 2001, Volume: 198, Number: 1, Pages: 89-96 Pages count : 8 DOI: 10.1006/jcat.2000.3112 | ||||
Tags | Isomerization, Isotope labeling, n-pentane, NMR (1H and 13C), Platinum on WOx/ZrO2, Tungstated zirconia | ||||
Authors |
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Affiliations |
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Funding (1)
1 | German Research Foundation | SFB 338 |
Abstract:
The skeletal isomerization of n-pentane over platinum-promoted tungstated zirconia has been studied by the 1H and 13C nuclear magnetic resonance technique. Pt/WOx/ZrO2 samples with varying Pt concentrations have been used as catalysts. 13C-labeled n-pentane was used to analyze the isotopic label distribution in the reaction products. A few aspects of the mechanism of n-pentane isomerization are discussed. Spectroscopic evidence was obtained indicating that initially n-pentane isomerization proceeds by a monomolecular pathway, most probably on Lewis acid sites, which permit hydride abstraction from n-alkane molecules. At higher conversion degrees, isopentane is produced both mono- and bimolecularly via oligomerization and β-fission of a chemisorbed C10-carbenium ion.
Cite:
Filimonova S.V.
, Nosov A.V.
, Scheithauer M.
, Knözinger H.
n-Pentane Isomerization over Pt/WOx/ZrO2 Catalysts: A 1H and 13C NMR Study
Journal of Catalysis. 2001. V.198. N1. P.89-96. DOI: 10.1006/jcat.2000.3112 WOS Scopus РИНЦ
n-Pentane Isomerization over Pt/WOx/ZrO2 Catalysts: A 1H and 13C NMR Study
Journal of Catalysis. 2001. V.198. N1. P.89-96. DOI: 10.1006/jcat.2000.3112 WOS Scopus РИНЦ
Dates:
Submitted: | Jul 23, 2000 |
Accepted: | Oct 28, 2000 |
Published print: | Feb 1, 2001 |
Published online: | Feb 8, 2001 |
Identifiers:
Web of science | WOS:000167650100010 |
Scopus | 2-s2.0-0035742014 |
Elibrary | 14195722 |
Chemical Abstracts | 2001:127566 |
Chemical Abstracts (print) | 134:353030 |
OpenAlex | W2002182535 |