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In Situ FT-IR Spectroscopy of the Adsorption of CO on Methanol Catalysts

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Abstract:

Fourier transform infrared spectroscopy was used to identify surface species on zinc oxide and a zinc-copper mixed oxide at CO pressures up to 50 atm and a temperature of 200°C. In situ spectra were recorded in a high-pressure cell having a short path length. Spectra of adsorbed species on both oxides indicated the presence of carbonate, carboxylate, hydride, hydroxide, and formate surface species. The spectrum of the mixed oxide at 50 atm had additional bands which were assigned to a methoxide surface species.

Keywords: FT-IR spectroscopy of catalysts; High-pressure infrared cell; Infrared; Methanol synthesis; Techniques, spectroscopic

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702814732175

Affiliations: Department of Chemical Engineering, Ames Laboratory—United States Department of Energy, Iowa State University, Ames, Iowa 50011

Publication date: November 1, 1981

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