... Hydrocarbons are sorbed on semi-conducting catalysts either weakly-reversibly, or strongly-irreversibly. The ratio of weak to strong adsorption is a function of temperature and the chemical composition ... temperature range up to 400oC. (8) Reaction products, such as aldehydes, olefine oxides, etc., are strongly sorbed on the catalyst surface, contributing to formation of the organic residue and representing ... tested and compared with that of monometallic Pd references. The catalytic properties display a strong dependence on the degree of interaction, which exists between the metals in the calcinations...