沸石
微型多孔材料
煅烧
催化作用
溴化物
Baeyer–Villiger氧化
化学
无机化学
热液循环
肺表面活性物质
水热合成
化学工程
有机化学
工程类
生物化学
作者
Hailang Liu,Xu Fang,Yu Gao,Honggen Peng,Le Xu
标识
DOI:10.1016/j.micromeso.2023.112846
摘要
The Baeyer-Villiger (BV) oxidation which can transform ketones into the corresponding lactones attracts wide attention. Although many Sn-containing zeolites have shown superior activity, bulky reactants often suffer low mass transfer efficiency during BV reaction due to the narrowed channel opening of microporous zeolite catalysts. To address this issue, we developed a preparation method to construct the swollen-type Sn-MWW zeolite, namely Sn-ECNU-7P, in which cetyltrimethylammonium bromide (CTAB) surfactant successfully swollen the adjacent MWW nanosheets with a large interlayer spacing of 22 Å during hydrothermal synthesis. The subsequent of acid treatment and calcination led to the formation of a hierarchical porous system in the resulting Sn-ECNU-7 zeolite with a high external surface area. Compared to conventional Sn-MWW catalysts, Sn-ECNU-7 exhibited a higher activity and stability for the BV oxidation reaction of bulky 2-adamantanone using H2O2 and tert-butyl hydroperoxide (TBHP) as oxidants, showing a promising potential for the application in BV oxidation of bulky reactants.
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