摘要
This mini-review summarizes some novel aspects of reactions conducted in aqueous/organic emulsions stabilized by carbon nanohybrids functionalized with catalytic species. Carbon nanohybrids represent a family of solid catalysts that not only can stabilize water-oil emulsions in the same fashion as Pickering emulsions, but also catalyze reactions at the liquid/liquid interface. Several exam-ples are discussed in this mini-review. They include (a) aldol condensation-hydrodeoxygenation tandem reactions catalyzed by basic (MgO) and metal (Pd) catalysts, respectively; (b) Fischer-Tropsch synthesis catalyzed by carbon-nanotube-supported Ru; and (c) emulsion polymerization of styrene for the production of conductive polymer composites. Conducting these reactions in emul-sion generates important advantages, such as increased liquid/liquid interfacial area that consequently means faster mass transfer rates of molecules between the two phases, effective separation of products from the reaction mixture by differences in the water-oil solubility, and significant changes in product selectivity that can be adjusted by modifying the emulsion characteristics.
This mini-review summarizes some novel aspects of reactions conducted in aqueous/organic emul-sions stabilized by carbon nanohybrids functionalized with catalytic species. Carbon nanohybrids represent a family of solid catalysts that not only can stabilize water-oil emulsions in the same fash-ion as Pickering emulsions, but also catalyze reactions at the liquid/liquid interface. Several exam-ples are discussed in this mini-review. They include （a） aldol condensation-hydrodeoxygenation tandem reactions catalyzed by basic （MgO） and metal （Pd） catalysts, respectively; （b） Fischer-Tropsch synthesis catalyzed by carbon-nanotube-supported Ru;and （c） emulsion polymerization of styrene for the production of conductive polymer composites. Conducting these reactions in emul-sion generates important advantages, such as increased liquid/liquid interfacial area that conse-quently means faster mass transfer rates of molecules between the two phases, effective separation of products from the reaction mixture by differences in the water-oil solubility, and significant changes in product selectivity that can be adjusted by modifying the emulsion characteristics.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2014年第6期798-806,共9页
基金
supported by the US Department of Energy/EPSCOR (DE SC00044136.85)
关键词
固体催化剂
纳米复合物
催化反应
碳纳米管
有机系统
乳化剂
聚合物复合材料
液
液界面
Carbon nanomaterials
Nanohybrids
Emulsions
Biphasic aqueous/organic mixtures
Catalysis at water/oil interface
Biomass conversion
Eischer-Tropsch synthesis
