燃料化学学报2012，Vol.40Issue(4)：412-417,6.
稀土改性对SO42-/ZrO2固体酸催化剂结构与催化性能的影响
Effect of rare earth modification on structure and catalytic properties of SO42-/ZrO2 solid acid catalyst
摘要
Abstract
The rare earth-promoted SO42VZrO2 solid super acid catalyst was prepared by the co-precipitation and impregnation method under different conditions. The catalytic properties of the samples were evaluated through transesterification of waste oil and methanol and characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and BET surface area measurement. The results showed that among all the prepared samples the one that was calcined at 600 t with La doping 4% had the highest production rate of 64.68%. An analysis of XRD patterns revealed that the incorporation of rare earth into tetragonal zirconia stabilizes the compound, and the calcination at 600 t increases the reactivity of the catalyst by producing a greater fraction of active tetragonal zirconia with a larger surface area. It could be seen from the FT-IR spectra that super acid structures were formed in the catalysts and the acidity was strengthened remarkably and the activated centre of the catalyst were increased.关键词
固体酸/稀土/生物柴油/酯交换/焙烧温度Key words
solid super acid/ rare earth elements/ biodiesel/ transesterification/ calcination temperature分类
能源科技引用本文复制引用
陈颖,孙雪,李慧,白云波..稀土改性对SO42-/ZrO2固体酸催化剂结构与催化性能的影响[J].燃料化学学报,2012,40(4):412-417,6.基金项目
黑龙江省科技攻关资助项目(G209A302). （G209A302）
