Effect of the nature of the carrier on the activity and stability of copper chloride catalysts in the propylene oxychlorination process

In this work, in the propylene oxychloriantion process, we have studied carriers on which local overheating, due to the high exothermicity of the reaction, exerts no effect on the lattice structure. We also took into account the availability of the carriers and the possibility of using them in a fluidized catalyst bed. As such substances, we tested KSK silica gel (SiO/sub 2/-(SiO/sub 4/)), aluminum oxide (/gamma/-Al/sub 2/O/sub 3/-(AlO/sub 4/)), and aluminosilicate (SiO/sub 2/-(SiO/sub 4/) plus /gamma/-Al/sub 2/O/sub 3/-(AlO/sub 4/)). Active carriers are preferable for oxychlorination of propylene at the double bond; for reaction at the allylic position, carriers with reduced activity are preferable. The acidity of carriers and their specific surface exert an effect on the direction of propylene oxychlorination. Carry off of copper from the surface of carriers which have a reduced acidity takes place less intensively.