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8686727 
Journal Article 
Modification of the activity of chromia and chromia-alumina catalysts by adsorbates 
Kuriacose, JC; Daniel, C; Swaminathan, R 
1968 
Yes 
Journal of Catalysis
ISSN: 0021-9517
EISSN: 1090-2694 
12 
1 
19-24 
English 
The parallel dehydrogenation and dehydration of cyclohexanol and isopropanol on chromia show that the selectivity is determined, not by the catalyst alone, but by both, the absorbate and the catalyst. The dehydrogenation of the alcohols on chromia and chromia-alumina is enhanced when they are mixed with acetic acid or hydrogen. Cyclohexane suppresses the dehydrogenation. These observations are discussed in the light of the effect the chemisorption of the various compounds has on the electronic character of the catalyst. It is seen that the effect of doping semiconductor oxides can be simulated by mixing reactants with other substances. 1968.