Table 3: Approximate composition of catalysts.

ComponentCatalyst ACatalyst BCatalyst C
content, % wt.content, % wt.content, % wt.

NiO5–103.01–5
MoO320–24
WO31910–15
Al2O340–50Balance 7884–70
SiO225–30*
Aluminum phosphate5–10

*SiO2 is in form of aluminosilicate.