Amphiphilic Titanosilicates as Pickering Interfacial Catalysts for Liquid-Phase Oxidation Reactions

被引：33
作者：
Yang, Yulin [1 ]
Zhou, Wen-Juan [1 ,2 ]
Liebens, Armin [2 ]
Clacens, Jean-Marc [2 ]
Pera-Tittus, Marc [2 ]
Wu, Peng [1 ]
机构：
[1] E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
[2] CNRS Solvay, UMI 3464, Ecoefficient Prod & Proc Lab E2P2L, Shanghai 201108, Peoples R China
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2015年 / 119卷 / 45期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
MOR-TYPE TITANOSILICATE; SELECTIVE OXIDATION; HYDROGEN-PEROXIDE; WATER/OIL INTERFACE; BOUNDARY CATALYSIS; ALKENE EPOXIDATION; SILICA-NANOPARTICLES; NANOHYBRID CATALYSTS; SOLID NANOPARTICLES; BIPHASIC SYSTEMS;
D O I：
10.1012/acs.jpcc.5b07175
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Monodispersed amphiphilic zeolite/mesosilica composite material TS-1@KCC-1 (TK), which could stabilize Pickering emulsions for the benzene/H2O2 system, has been synthesized, and its physicochemical properties have been investigated in detail. The amphiphilic TK catalyst displayed a higher catalytic activity under Pickering interfacial catalysis (PIC) than under phase-boundary catalysis (PBC) and conventional reaction conditions in the hydroxylation of benzene by hydrogen peroxide without cosolvent and under static conditions. Under optimized conditions, a TS-1@KCC-1 catalyst grafted with octyl chains (2.42 wt %) could afford an interfacial activity of 1.1 mol (Ti-mol)(-1). Moreover, PIC reaction conditions exhibited an excellent thermal stability and good reusability.
引用
收藏
页码：25377 / 25384
页数：8
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