An Infrared Spectroscopic Flow Reactor for in Situ Studies of Heterogeneous Catalytic Reactions at High Temperature and the Reactions of CO2 and Benzyl Benzoate on Alumina

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A simple infrared spectroscopic flow reactor has been fabricated for studying hetereogeneous catalytic reactions at elevated temperatures. Adsorption of CO2 on alumina and modified alumina catalysts shows the formation of several different surface carbonates. The hydrogen carbonate on alumina has a fast equilibrium with the gas phase. During the reduction of benzoic acid esters in this reactor, the formation of surface benzoate and carbonate has been observed. The desorption rate of the surface benzoate depends on the composition of the catalyst.

Keywords: Analysis, for absorbed CO2 and benzoate on alumina; Infrared; Interferometry; Surface analysis

Document Type: Research Article


Affiliations: Dow Chemical Company, Midland, Michigan 48640

Publication date: November 1, 1980

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