CuCl2 on gamma-alumina, the base catalyst for oxychlorination reactions, has been investigated by several techniques as a function of Cu loading, sample aging and heating. The results point out the formation of a surface Cu aluminate species and a highly dispersed CuCl2. The latter slowly hydrolyzes under aging, but CuCl2 is restored under heating and is the active species in oxychlorination as demonstrated by activity tests.
Copper species in CuCl2/gamma-Al2O3 catalyst for ethylene oxychlorination
ZECCHINA, Adriano;SPOTO, Giuseppe;BORDIGA, Silvia;LAMBERTI, Carlo
2000-01-01
Abstract
CuCl2 on gamma-alumina, the base catalyst for oxychlorination reactions, has been investigated by several techniques as a function of Cu loading, sample aging and heating. The results point out the formation of a surface Cu aluminate species and a highly dispersed CuCl2. The latter slowly hydrolyzes under aging, but CuCl2 is restored under heating and is the active species in oxychlorination as demonstrated by activity tests.
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