School of Chemical, Biological, and Materials Engineering, University of Oklahoma, Norman, OK 73019, USA.
Science. 2010 Jan 1;327(5961):68-72. doi: 10.1126/science.1180769.
A recoverable catalyst that simultaneously stabilizes emulsions would be highly advantageous in streamlining processes such as biomass refining, in which the immiscibility and thermal instability of crude products greatly complicates purification procedures. Here, we report a family of solid catalysts that can stabilize water-oil emulsions and catalyze reactions at the liquid/liquid interface. By depositing palladium onto carbon nanotube-inorganic oxide hybrid nanoparticles, we demonstrate biphasic hydrodeoxygenation and condensation catalysis in three substrate classes of interest in biomass refining. Microscopic characterization of the emulsions supports localization of the hybrid particles at the interface.
一种可回收的催化剂，同时能够稳定乳液，这将在简化生物质精炼等工艺方面具有巨大优势，因为粗产品的不混溶性和热不稳定性极大地增加了纯化程序的复杂性。在这里，我们报告了一类能够稳定水-油乳液并在液-液界面催化反应的固体催化剂。通过将钯沉积在碳纳米管-无机氧化物杂化纳米粒子上，我们在生物质精炼中感兴趣的三类底物中展示了两相加氢脱氧和缩合催化。对乳液的微观特征分析支持了杂化颗粒在界面处的定位。
