Abstract
Sulfur reduction additives have been synthesized based on an ordered mesoporous aluminosilicate of Al-MCM-41 type and alumina with a different ratio of components in a support for cracking catalysts. Supports and additives for cracking catalysts were characterized by transmission electron microscopy, FTIR spectroscopy, low-temperature nitrogen adsorption/desorption, and thermoprogrammed ammonia desorption. Catalytic tests of additives with an industrial zeolite-containing cracking catalyst were carried out, and their sulfur reduction activity was demonstrated. It was found that with an increase in the proportion of mesoporous aluminosilicate in the composition of the additive, the sulfur reduction activity rises. The use of additives reduces the amount of sulfur in the liquid cracking products of vacuum gas oil up to 27 rel % compared with the use of a catalyst without the additive.
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