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Silver(I) oxide was prepared in a controlled atmosphere by heating a pure, clean silver film in 02 and by reaction with 03. The infrared spectrum consists of one band at 535 cm-1 in the 400-4000-cm-1 region. From this Ag02 film, simple silver carbonate was formed by reaction with C02. It shows four bands at 1410, 1020, 880, and 690 cm-1. The further reaction with water vapor resulted in the formation of basic silver carbonate having peaks at 880, 705, 1060, 1380, and 1460 cm-1, and a broad weak band in the 3200-3400-cm-1 region. The stability of these species with respect to evacuation and heat treatment is also discussed.

Adsorption and subsequent reaction of H2S on alumina gave major i.r. bands at 1341, 1568, 1625, and 3400 cm−1. Relative band intensities were used to follow the first order decomposition of adsorbed H2S and formation of H2O. Rate constants of the surface reaction at 23, 55, and 80 °C were 0.70, 1.48, and 3.42 × 10−3 s−1, respectively. A mechanism consistent with the observed spectral and kinetic data involved adsorption to an exposed Al ion forming an Al—S surface bond, and hydrogen bonding to neighboring O and OH species. It was assumed that the sulfur remained on the surface as a sulfide. The 1568 cm−1 band was discussed in terms of an Al—O species.With adsorption on MoS2–Al2O3, bands appeared at 1330 and 1575 cm−1. Behavior in all respects was similar to that observed on the alumina support alone.

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