prov:value
| - The catalyst support may be, for example, an inorganic oxide such as alumina, titanium dioxide, zinc oxide, magnesium oxide, thoria, chromia, zirconia, an amorphous silica-alumina, tin modified alumina, a zeolite, for example, faujasite, mordenite, X, Y or L zeolites, a clay such as china clay, kaolin, bentonite, diatomaceous earth or other silicon-based materials such as silica gel or silicon car
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