Inhibition of catalytic activity of rhenium

R. P.H. Gasser; A. K. Szczepura

doi:10.1016/0039-6028(75)90337-4

Inhibition of catalytic activity of rhenium

R. P.H. Gasser, A. K. Szczepura

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6 Citations (Scopus)

Abstract

The activity of rhenium as a hydrogen isotope equilibrium catalyst is inhibited by preadsorbed oxygen. The nearly linear decline in efficiency at 380 K and 980 K with increased oxygen coverage is matched by a similar decrease in the room temperature saturation uptake and initial sticking probability of hydrogen. In this rhenium closely resembles tungsten, and the conclusion is drawn that as far as hydrogen is concerned "patches" of high catalytic activity are not important. However, and unlike tungsten, the oxygen-saturated rhenium filament retained some catalytic and adsorptive capacity.

Original language	English
Pages (from-to)	201-206
Number of pages	6
Journal	Surface Science
Volume	49
Issue number	1
DOIs	https://doi.org/10.1016/0039-6028(75)90337-4
Publication status	Published - 1 Apr 1975
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(75)90337-4

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N2 - The activity of rhenium as a hydrogen isotope equilibrium catalyst is inhibited by preadsorbed oxygen. The nearly linear decline in efficiency at 380 K and 980 K with increased oxygen coverage is matched by a similar decrease in the room temperature saturation uptake and initial sticking probability of hydrogen. In this rhenium closely resembles tungsten, and the conclusion is drawn that as far as hydrogen is concerned "patches" of high catalytic activity are not important. However, and unlike tungsten, the oxygen-saturated rhenium filament retained some catalytic and adsorptive capacity.

AB - The activity of rhenium as a hydrogen isotope equilibrium catalyst is inhibited by preadsorbed oxygen. The nearly linear decline in efficiency at 380 K and 980 K with increased oxygen coverage is matched by a similar decrease in the room temperature saturation uptake and initial sticking probability of hydrogen. In this rhenium closely resembles tungsten, and the conclusion is drawn that as far as hydrogen is concerned "patches" of high catalytic activity are not important. However, and unlike tungsten, the oxygen-saturated rhenium filament retained some catalytic and adsorptive capacity.

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