Direct hydroxylation of toluene catalyzed by MOF-199 modified with PG 8 using H2O2 as oxidant

Abstract

The activation of aromatic Csp2-H bonds to achieve hydroxylation of aromatics has attracted widespread attention, but it remains a huge challenge. Therefore, developing a durable and efficient catalyst for selective hydroxylation of toluene is an important issue. This article synthesized MOF-199 using phthalic acid as a ligand and synthesized it using impregnation method PG8@MOF Catalysts. The experimental results indicate that, PG8@MOF In the hydroxylation reaction of toluene, it has strong advantages. Under the optimal conditions, the yield of cresol is 49.1%, among which the yield of ortho cresol reaches 41.1%. The regenerated catalyst has good reusability. These findings provide a convenient method for constructing highly active catalysts for direct hydroxylation of toluene.