Effect of hydrogen, and vapors of water and organic compounds on the structure of Sr2CuO3

Abstract

Abstract The effect of hydrogen, and vapors of water and the simplest organic compounds of various classes on the structure of strontium orthocuprate (Sr2CuO3) in the temperature range of 150–300 °C has been investigated. At temperatures up to 200 °C, hydrogen and water are embedded in the structure of Sr2CuO3 from the annealing atmosphere. Under these conditions, organic compounds are oxidized to form water followed by hydration of Sr2CuO3. It has been revealed that Sr2CuO3 is a catalyst for oxidation reactions. Water absorption > 2 wt.% provokes hydrolytic decomposition of Sr2CuO3 with the formation of strontium hydroxide and copper-richer cuprates (SrCuO2 and SrCu2O3). At a temperature of 300 °C, organic compounds partially reduce copper, which is also the cause of the decomposition of Sr2CuO3.