H2 reduction of Gd- and Sm-doped ceria compared to pure CeO2 at high temperatures: effect on structure, #oxygen# nonstoichiometry, #hydrogen solubility and #hydroxyl #chemistry

H2 reduction of Gd- and Sm-doped ceria compared to pure CeO2 at high temperatures: effect on structure, #oxygen# nonstoichiometry, #hydrogen solubility and #hydroxyl #chemistry