A strategy for separating and recycling solid catalysts based on the pH-triggered Pickering-emulsion inversion

Hengquan Yang; Ting Zhou; Wenjuan Zhang

doi:10.1002/anie.201300534

A strategy for separating and recycling solid catalysts based on the pH-triggered Pickering-emulsion inversion

Angew Chem Int Ed Engl. 2013 Jul 15;52(29):7455-9. doi: 10.1002/anie.201300534. Epub 2013 Jun 7.

Authors

Hengquan Yang¹, Ting Zhou, Wenjuan Zhang

Affiliation

¹ School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92,Taiyuan 030006, China. hqyang@sxu.edu.cn

PMID: 23749721
DOI: 10.1002/anie.201300534

Abstract

Turn you inside out: A novel method for performing in situ separation and recycling of submicrometer-sized solid catalysts is developed based on the pH-triggered inversion of Pickering emulsions (see scheme; o = oil, w = water). Solid catalysts can be recycled 36 times without significant loss of activity. The method differs from conventional methods in terms of speed, energy consumption, catalyst separation, and recycling effectiveness.

Keywords: Pickering emulsions; biphasic reactions; catalyst separation; heterogeneous catalysis.