纳米固体超强酸SO2-4/Fe2O3的催化性能

引言 目前的工业催化反应大部分属于酸催化反应,而固体超强酸SO2- 4/MxOy(M代表金属)]和液体酸相比,具有活性和选择性高、不腐蚀、无污染及产物易分离等特点1],是一种较理想的绿色催化剂.自1979年Hion首例制备SO2- 4/Fe2O3固体超强酸以来,它就成为人们研究的热点2～5],并广泛地应用于石油炼制和有机合成工业.但有关纳米固体超强酸的研究报道还不多.

Catalytic performance of SO2- 4/Fe2O3 nanosolid superacid

In order to minimize the pollution of ferrous sulfate, a by-product of titanium dioxide, and increase the yield of synthetic ester, the SO^2-₄/Fe₂O₃ nanosolid superacid has been produced by chemical precipitation and its micrographs was determined by SEM. The effect of preparation conditions of SO^2-₄/Fe₂O₃ nanosolid superacid on catalysis synthesis butyl acetate and synthesis conditions of butyl acetate were studied.From experimental data,as compared with liquid acid, SO^2-4/Fe₂O₃ nanosolid superacid showed higher catalytic performance in catalytic synthesis of butyl acetate,and the yield of butyl acetate was obviously increased in the same reaction time.