Journal ArticleDOI
In Situ FT-IR Spectroscopy of the Adsorption of CO on Methanol Catalysts
J. F. Edwards,G. L. Schrader +1 more
TLDR
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 as discussed by the authors.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.read more
Citations
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Journal ArticleDOI
Infrared studies of the reactive adsorption of organic molecules over metal oxides and of the mechanisms of their heterogeneously-catalyzed oxidation
TL;DR: The use of IR spectroscopic techniques to provide information on the mechanisms of catalytic oxidation over metal oxide catalysts is briefly discussed in this paper, where generalized mechanisms of these complex oxidation reactions are proposed and the catalyst features affecting selectivities in these reactions are discussed.
Journal ArticleDOI
Wide temperature range IR spectroscopy cell for studies of adsorption and desorption on high area solids
TL;DR: In this paper, a new design for an infrared cell useful for studies of the spectrum of surface species on high area solids is presented, which is well suited over a wide temperature range (100-1000 K).
Journal ArticleDOI
Effects of metal-support interactions on the chemisorption of H2 and CO on Pd/SiO2 and Pd/La2O3
TL;DR: In this paper, the adsorption of H 2 and CO was investigated on SiO 2 and La 2 O 3-supported Pd catalysts, and the structure of adsorbed CO was characterized by infrared spectroscopy.
Journal ArticleDOI
Chemical and Physical Properties of Copper-Based Catalysts for CO Shift Reaction and Methanol Synthesis
Giovanna Ghiotti,Flora Boccuzzi +1 more
TL;DR: The modern low-pressure methanol synthesis catalysts are based on copper-containing systems such as Cu/ZnO/Al2O3 and Cu/NO/Cr 2O3 with various compositions as discussed by the authors.
Journal ArticleDOI
Methanol synthesis by means of diffuse reflectance infrared Fourier transform and temperature-programmed reaction spectroscopy
TL;DR: In this paper, the authors used the Diffuse reflectance infrared Fourier transform and temperature-programmed reaction spectroscopies to investigate the nature of the adsorbed surface species under methanol synthesis conditions on zinc oxide, partially oxidized polycrystalline copper and on an ICI Cu/ZnO/Al2O3 commercial catalyst.
References
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Journal ArticleDOI
Catalytic synthesis of methanol from COH2: I. Phase composition, electronic properties, and activities of the Cu/ZnO/M2O3 catalysts
TL;DR: In this article, the X-ray diffraction, optical, and XPS-Auger studies are presented that describe the formation, electronic structure, and surface composition of low pressure methanol synthesis catalysts.
Journal ArticleDOI
The infrared spectrum of hydrogen chemisorbed on zinc oxide
TL;DR: In this paper, it was concluded that the irreversible change in conductivity is due to reduction of the zinc oxide, and that the high temperature maximum which is commonly observed for hydrogen-- zinc oxide isobars is not due to formation of an OH species (auth)
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In situ fourier transform infrared study of methanol synthesis on mixed metal oxide catalysts
James F. Edwards,G. L. Schrader +1 more