文献类型：期刊文献

英文题名：Pickering Interfacial Catalysts for solvent-free biomass transformation: Physicochemical behavior of non-aqueous emulsions

作者：Fan, Zhaoyu[1,2]; Tay, Astrid[2]; Pera-Titus, Marc[2]; Zhou, Wen-Juan[2]; Benhabbari, Samy[2]; Feng, Xiaoshuang[2]; Malcouronne, Guillaume[2,3]; Bonneviot, Laurent[3]; De Campo, Floryan[2]; Wang, Limin[1]; Clacens, Jean-Marc[2]

机构：[1] Key Laboratory of Advanced Materials, Institute of Fine Chemicals, East China University of Science and Technology, 130 Mei Long Rd., Shanghai 200237, China; [2] Eco-Efficient Products and Processes Laboratory [E2P2L], UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, China; [3] Laboratoire de Chimie, UMR 5182 CNRS - Ecole Normale Supérieure de Lyon, 46 allée d'Italie, 69364 Lyon, France

年份：2014

卷号：427

起止页码：80

外文期刊名：Journal of Colloid and Interface Science

收录：EI(收录号：20142317787109)

语种：英文

外文关键词：Emulsions - Glycerol - Bioconversion - Biomass - Silica nanoparticles - Catalyst activity - Emulsification - Surface active agents - Solvents

摘要：A key challenge in biomass conversion is how to achieve valuable molecules with optimal reactivity in the presence of immiscible reactants. This issue is usually tackled using either organic solvents or surfactants to promote emulsification, making industrial processes expensive and not environmentally friendly. As an alternative, Pickering emulsions using solid particles with tailored designed surface properties can promote phase contact within intrinsically biphasic systems. Here we show that amphiphilic silica nanoparticles bearing a proper combination of alkyl and strong acidic surface groups can generate stable Pickering emulsions of the glycerol/dodecanol system in the temperature range of 35-130. °C. We also show that such particles can perform as Pickering Interfacial Catalysts for the acid-catalyzed etherification of glycerol with dodecanol at 150. °C. Our findings shed light on some key parameters governing emulsion stability and catalytic activity of Pickering interfacial catalytic systems. This understanding is critical to pave the way toward technological solutions for biomass upgrading able to promote eco-efficient reactions between immiscible organic reagents with neither use of solvents nor surfactants. ? 2013 Elsevier Inc.