A study of iron modification of the alumina-supported Pt/SO_4/ZrO_2 catalysts for isomerization of n-hexane

摘要

The modifying effect of iron, which is introduced in different steps of the synthesis from different precursors, on the reaction of n-hexane isomerization in the presence of supported Pt/SZ/Al_2O_3(Fe) catalysts was studied. It was shown that the addition of Fe substantially affects the acidic properties of the catalysts, increasing mostly the content of Lewis acid sites. When iron is deposited on alumina or introduced into aluminum hydroxide, the yield of the sum of hexane isomers increases to 80-85 wt.% and the yield of the sum of dimethylsubstituted isomers, to 28-33 wt.%.