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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 48,
  • Issue 10,
  • pp. 1208-1212
  • (1994)

Diffuse Reflectance FT-IR Characterization of Active Sites Under Reaction Conditions: The Production of Oxygenates in the CO/H2 Reaction

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Abstract

The reactivity of a Lu<sub>2</sub>O<sub>3</sub>-promoted Rh/Al<sub>2</sub>O<sub>3</sub> catalyst in the CO/H<sub>2</sub> reaction is reported. Methane, heavier hydrocarbons, methanol, and ethanol are obtained. <i>In situ</i> DRIFTS has been employed to record the infrared spectra under the actual reaction conditions. The structure of the observed CO<sub>ads</sub> DRIFTS bands has been resolved into its components. The production of oxygenates (methanol and ethanol) has been correlated with the results of the deconvolution calculation. Specific sites for the production of methanol and ethanol in the CO/H<sub>2</sub> reaction over a Rh,Lu<sub>2</sub>O<sub>3</sub>/Al<sub>2</sub>O<sub>3</sub> catalyst are proposed.

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