Electron probing of oxygen-evolving oxide catalysts
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Proceedings of the National Academy of Sciences1999
The deactivation of supported nickel catalysts by coking is an important technological subject for many chemical processes, especially when high concentrations of unsaturated hydrocarbons are present in the feed gas. Here, the reversible segregation of Ni ...
Al-Sn layer structures were prepared by simultaneous evaporation of Al and Sn onto predeposited Al layers prepared on SiO2-covered Si wafer substrates, at a substrate temperature of 470 K and an oxygen partial pressure of 3 X 10(-3) Pa. The chemical state, ...
The influence of potassium on the formation of surface vanadia species on V/Ti oxide catalysts contg. from 0.2 to 5 monolayers of vanadia (K/V at. surface ratio ?1) has been investigated by temp. programmed redn. in hydrogen and by FT-Raman spectroscopy un ...
Supported palladium oxide catalysts are able to convert CH4 to C2H6, CO, CO2, H2 and H2O at temperatures ⩾315 °C. Catalysts did not show any support effect when TiO2, Al2O3, ZrO2, La2O3 and MgO were used as supports. With sequential O2 pulsing the catalyst ...
Deposition of small amts. of IrO2 clusters on the B-doped diamond (BDD) surface (BDD-IrO2 electrode) dramatically enhances both the O2 evolution reaction and the oxidn. of orgs. in the potential region of water decompn. The fact that BDD-IrO2 electrode beh ...
Ethylene oxidn. on IrO2, which is a metal-type conducting metal oxide, and on Pt and Rh was used as a model reaction to compare the rate enhancement and kinetic modification induced by (i) electrochem. promotion (non-Faradaic electrochem. modification of c ...
