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首页> 外文期刊>Catalysis science & technology >Synthesis of ZSM-48 zeolites and their catalytic performance:a review
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Synthesis of ZSM-48 zeolites and their catalytic performance:a review

机译：Synthesis of ZSM-48 zeolites and their catalytic performance:a review

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ZSM-48 was first discovered as an impurity phase in the synthesis of ZSM-39.ZSM-48 has a framework based on a ferrierite sheet with non-interpenetrating linear 10-ring channels,the dimensions of which are 5.3 × 5.6 A.ZSM-48 has received extensive attention due to its unique framework structure.In this review,we summarize the synthesis and catalytic performances of ZSM-48 zeolites.In zeolite synthesis,organic cations play a very important role as structure-directing agents or as stabilizing pore fillers.The templating agents for the synthesis of ZSM-48 mainly include tetramethylammonium ions,diamines and hexamethonium ions.Other novel template agents have also been designed to synthesize ZSM-48.Nonaqueous systems and the seed-assisted method are introduced for the synthesis of ZSM-48.EU-1/ZSM-48 co-crystalline zeolites as an interesting zeolite have been synthesized.ZSM-48 also shows excellent performance in shape-selective catalytic reactions because ZSM-48 possesses a unique pore structure.ZSM-48 is mainly applied in cracking,shape-selective,methanol-to-hydrocarbon and hydroisomerization reactions.ZSM-48 showed excellent catalytic performance,especially in hydroisomerization.The hydroisomerization performance of ZSM-48 is further improved through alkali treatment,physical mixing and co-crystalline zeolite formation.The summarized studies reveal the excellent potential for the design and preparation of ZSM-48 with excellent catalytic performance,especially in hydroisomerization reactions.

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