Abstract
Chlorinated activated carbons and the respective tungsten oxide catalysts supported on them were tested as catalysts in the decomposition reaction of 2-propanol and characterized by measurement of their pHPZC. Supported catalysts were also used in the skeletal isomerization of 1-butene. Results found show that an increase in the chlorine content of the support increases the total surface acidity, as measured by the pHPZC, of both the support and the supported catalysts. However, there is also a decrease in their Bronsted type acidity, as determined from the results obtained from the dehydration reaction of 2-propanol. Thus, it seems that the effect of chlorine is to increase Lewis type acidity in both the support and the supported catalyst. In addition, during the dehydration of 2-propanol there was a partial reduction of W(VI) to W(V) in most of the catalysts, which brought about a restructuring of the metal oxide particles. Isomerization of 1-butene gives only isobutene and trans-2-butene. Selectivity t...
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