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Alkane Carbonylation with Carbon Monoxide on Sulfated Zirconia: NMR Observation of Ketone and Carboxylic Acid Formation from Isobutane and CO
Author(s) -
Stepanov Alexander G.,
Luzgin Mikhail V.,
Krasnoslobodtsev Alexey V.,
Shmachkova Vera P.,
Kotsarenko Nina S.
Publication year - 2000
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20001016)39:20<3658::aid-anie3658>3.0.co;2-c
Subject(s) - carbonylation , isobutane , chemistry , carbon monoxide , ketone , catalysis , nuclear magnetic resonance spectroscopy , carboxylic acid , pivalic acid , organic chemistry , inorganic chemistry
Coadsorbed water determines the reaction products when isobutane undergoes carbonylation by CO on a sulfated zirconia catalyst at 70°C. This is shown by the results of in situ solid‐state 13 C NMR and ex situ 13 C high‐resolution NMR spectroscopy and by GC‐MS analyses. Methyl isopropyl ketone selectively forms in the absence of water, while pivalic acid represents the primary reaction product the presence of coadsorbed water (see scheme).