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

作者：Yang, Yulin; Zhou, Wen Juan; Liebens, Armin; Clacens, Jean Marc; Pera Tittus, Marc^*; Wu, Peng

来源：Journal of Physical Chemistry C, 2015, 119(45): 25377-25384.

DOI：10.1012/acs.jpcc.5b07175

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.

• 出版日期2015-11-12
• 单位华东师范大学