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论文类型：期刊论文

发表时间：2019-10-01

发表刊物：MICROPOROUS AND MESOPOROUS MATERIALS

收录刊物：SCIE、EI

卷号：287

页面范围：85-92

ISSN号：1387-1811

关键字：Hierarchical Sn-Beta zeolite; NH3H2-O-CTAB treatment; Baeyer-villiger oxidation; Aerosol method

摘要：The Sn-Beta zeolite is an efficient Lewis acid catalyst for a wide range of chemical reactions. Here a seed-free aerosol-assisted hydrothermal strategy is used to synthesize plate-like Sn-Beta zeolite with higher tin content. A majority of Sn species were transformed into the framework of Beta zeolite as the desired tetrahedral coordination state, which creates strong Lewis acid sites. Moreover, the diffusion property of the Sn-Beta zeolite can be further improved by a mild base-surfactant (NH3H2-O-CTAB) treatment. The addition of CTAB can not only narrow the mesopore distribution but also prevent the excessive loss of Sn species. The obtained hierarchical Sn-Beta zeolite exhibits an enhanced catalytic performance in the Baeyer-Villiger oxidation of bulky ketone.