Investigation of alcohol dehydration by a cobalt(II) sulfate-promoted γ-alumina catalyst inside a gas chromatograph injection port

A catalyst consisting of a sulfated cobalt promoter on γ-Al 2O 3 was prepared and utilized in a gas chromatograph (GC) injector liner to investigate the dehydration of alcohols. The activation energy barrier for the dehydration of the test compound, 2-butanol, was determined to be 83 kJ/mol (under t...

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Bibliographic Details
Published in:Journal of molecular catalysis. A, Chemical Chemical, 2003-03, Vol.194 (1), p.255-265
Main Authors: Skrdla, P.J., Robertson, R.T.
Format: Article
Language:English
Subjects:
Alcohol dehydration
Alumina catalyst
Catalysis
Catalytic reactions
Chemistry
Cobalt(II) sulfate promoter
Exact sciences and technology
GC injection port
General and physical chemistry
Non-linear retention
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:A catalyst consisting of a sulfated cobalt promoter on γ-Al 2O 3 was prepared and utilized in a gas chromatograph (GC) injector liner to investigate the dehydration of alcohols. The activation energy barrier for the dehydration of the test compound, 2-butanol, was determined to be 83 kJ/mol (under the given experimental conditions), the process obeying pseudo-first order kinetics. The chromatographic retention behavior of dichloromethane was used as a means of probing the catalyst surface. Changes in the retention of the molecule, as a function of the injection port temperature, were found to correlate with differences in the catalyst surface hydration.
ISSN:1381-1169
1873-314X
DOI:10.1016/S1381-1169(02)00529-0