Phosphorus-/Tungsten-Doped ZSM-5 Composites with a Hierarchical Structure for Efficient Production of 2,6-Diisopropylnaphthalene

Zeolite frameworks provide multiple templates in thefabricationof versatile metal materials, but most possess only micropores, limitingthe accessibility of active sites. Herein, we report the constructionof phosphorus-/tungsten-doped ZSM-5 composites with a hierarchicalmicro-mesoporous structure (PW-ZSM-5-AL). When used in thealkylation reaction, the hierarchical skeleton could effectively promotemass transfer and facilitate the accessibility of embedded activesites. This unique material greatly boosts the catalytic performancein the selective alkylation of naphthalene to isopropylnaphthaleneand 2,6-diisopropylnaphthalene, making it much superior to other zeoliteswithout the hierarchically porous structure.