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For the first time, highly selective Pt/H3PW12O40/SBA–15 trifunctional catalysts were evaluated for n-heptane hydroisomerization. Both Lewis (L) and Brønsted (B) acid sites were present in these catalysts. Reduction treatment led to heteropolyacid dispersion better and Pt nanoparticles smaller. With the best 1wt%Pt/20wt%H3PW12O40/SBA–15 catalyst, 100% isomerization selectivity and 56.74% n-heptane...
A series of mixed oxides (ZrO 2 –La 2 O 3 ) was investigated to establish the effect of the source of the sulphate ion and the modification of sol–gel zirconia with La 2 O 3 . Supports were synthesized varying the content of La 2 O 3 (2, 3, 5 and 10wt.%). Sample sulphation took place in situ, maintaining the amount at 20wt.% using concentrated...
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