Cyclic evolution of hydrogen during low-temperature thermolysis of water by adsorbed Re3Cl9 complex

The ability was studied of an Re₃Cl₉ cluster complex adsorbed on a silica surface to cause the thermochemical decomposition of water at a temperature of 670–770°K. In the multiply repeated cycles: water sorption, heating, water sorption, etc., the complex retains its ability to evolve hydrogen on heating to the same level. It was found that at room temperature, during the sorption of water, which occurred after heating, evolution of oxygen takes place. A reversible character of the interaction of the adsorbed rhenium complex with water in a two-stage thermochemical cycle has been postulated.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 26, No. 3, pp. 365–367, May–June, 1990.