Ru(0001) model catalyst under oxidizing and reducing reaction conditions: In-situ high-pressure surface X-ray diffraction study

Article Abstract:

The oxidation of the Ru(0001) model catalyst under various reaction conditions, starting from a strongly oxidizing environment to reaction conditions typical for CO oxidation were investigated in-situ with surface X-ray diffraction (SXRD) using a high-pressure reaction chamber. The RuO2 films on Ru(0001) were readily reduced by H2 and CO exposures at 415 K, without an induction period.

Usage, X-rays, X-ray diffraction, Optical properties

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Catalytic oxidation of ammonia on RuO(sub 2)(110) surfaces: Mechanism and selectivity

Article Abstract:

The selective oxidation of ammonia to either N(sub 2) or NO on RuO(sub 2)(110) single-crystal surfaces was investigated by a combination of vibrational spectroscopy, thermal desorption spectroscopy, and steady-state rate measurements under continuous flow conditions. The results demonstrated that selectivity depended on external parameters for the reaction on Pt surfaces.

Nitrogenous Fertilizer Manufacturing, Nitrogenous fertilizers, Ammonia

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Comparison of epoxidation and Baeyer-Villiger reaction pathways for Ti(IV)-H(sub 2)O(sub 2) and Sn(IV)-H(sub 2)O(sub 2)

Article Abstract:

The mechanisms and performance of Ti(IV)-H2O2 and Sn(IV)-H2O2 catalytic oxidation systems with model epoxidation and Baeyer-Villiger reactions are compared. The energetics calculated for the activation of hydrogen peroxide over tin catalysts are similar to the energetics calculated for titanium analogues.

Tin, Analysis, Chemical reactions, Titanium

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