ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 32, Number 6
JKCSEZ 32(6)
December 20, 1988 

The metal-support interaction was studied in 1∼5wt% copper supported on γ-alumina and titania systems by temperature programmed reduction (TPR) and EPR. When the samples were treated with oxygen at 500℃, the relative area of H2-TPR peak at higher temperature increased with copper content for titania system whereas that of lower temperature increased for γ-alumina system. After oxygen treatment at 300℃, γ-alumina system showed a TPR peak at 90℃ while two peaks at 120 and 180℃ were found in titania system. A typical Cu2+ EPR signal was observed on γ-alumina but very broad and small one on titania. From the results, it was suggested that the metal-support interaction increases in the order of silica < titania < γ-alumina and copper oxide has different loading characteristics depending on the supports.