NDLI: Direct evidence of intramolecular rearrangement in skeletal isomerization of n-butane over bifunctional catalysts

Content Provider	Springer Nature Link
Author	Suzuki, Tetsuo Okuhara, Toshio
Copyright Year	2001
Abstract	Mechanisms of skeletal isomerization of n-butane over bifunctional catalysts, Pt–Cs2.5H0.5PW12O40 and Pt-sulfated ZrO2, as well as the corresponding solid acids were studied using 1,4-13C2-n-butane. The isotopic distributions of the reactant and product were analyzed with field ionization mass spectrometry, by which the parent peak patterns were obtained. It was found that 1,4-13C2-n-butane was selectively isomerized to 13C2-isobutane over these catalysts in the presence of H2 at 423–523 K, while the corresponding solid acids gave isobutane with binomial distributions of 13C. These results clearly demonstrate that the skeletal isomerization of n-butane proceeded mainly via a monomolecular path with intramolecular rearrangement on both the bifunctional catalysts, while it occurred through a bimolecular path with intermolecular rearrangement on the solid acids. This difference in reaction mechanism is reflected on that in the selectivity to isobutane.
Starting Page	111
Ending Page	113
Page Count	3
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	72
Issue Number	1-2
e-ISSN	1572879X
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2001-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering Catalysis Pharmacy
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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