日本ゼオライト学会　刊行物 Publication of Japan Zeolite Association

Zeolite catalysts have been used for hydrocracking and hydrodewaxing processes. Faujasite type and ZSM-5 type zeolites are mainly used for these processes at the present time. However, recent progresses of zeolites have led many technical innovations to deal with increasing demands for producing light products (middle distillates and gasoline) from heavier crude oil. Also, there is the necessity for many refiners to raise the value and the quality of products according to the recent sudden raise up of crude oil prices. To accomplish these requirements, nowadays the new type of zeolites, for example, various large pore zeolites, are synthesized, and many articles are reported to apply these materials for hydrocracking and hydrodewaxing reactions. In this review, the zeolite catalysts commercially used for hydrocracking and hydrodewaxing processes are introduced and recent topics of zeolite catalysts are also described.