G.C. Kuczynski

TL;DR: In this paper, the authors show that the yield of ethylene oxide is significantly enhanced by pre-radiation of a 60Co γ-source, and that the effect is reversible in that reduction in H2 and reoxidation restores normal behavior and reirradiation in air restores the enhancement.

TL;DR: Following γ-irradiation and then exposure of a supported silver catalyst to ethylene and O2 at 280 °C, scanning electron microscopy (SEM) reveals spheroidization of the silver particles, a phenomenon not observed in the absence of pre-radiation as discussed by the authors.

TL;DR: In this article, calcium, present within supported Ag apparently as distinct oxide phase inclusions, is shown to be a necessary ingredient to cause yield of ethylene oxide enhancement due to pre-irradiation of said catalyst with γ rays in the presence of air.

TL;DR: Carberry et al. as discussed by the authors employed ESCA to determine whether or not pre-irradiation altered the chemical composition of the silver catalyst surface and reported changes in the surface chemical composition.

TL;DR: In this paper, the experimental data of Aykan [J. Catal.12, 281 (1968)] which reveal a maximum in acrylonitrile yield in ammoxidation of propylene from a m Bi2O3 · n MoO3 catalyst at an m, n value of 1, 2 are reinterpreted in terms of oxidation of Bi3+ with a consequent increase in the concentration of Mo5+.