2013•Journal of Zhejiang University of Science and TechnologyRequires access
Preparation and characterization of SO_4~(2-)/ZrO_2-TiO_2 and its catalytic synthesis of n-butyl propionate
Dong Chen
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Abstract
The n-butyl propionate was synthesized by SO42- /ZrO2-TiO2 prepared by dip-impregnation method.Under the conditions that n(Zr)∶n(Ti)=1∶1,H2 SO4 solution was 1.0 mol/L, calcination temperature was 600 ℃,the catalyst had high activity.And the optimum synthesized conditions were reaction time 2.5h,the amount of catalyst 1.0g,molar ratio of acid to alcohol 1∶1,the yield of ester 77.36%.Then the catalyst was characterized by methods of Hammett indicator,BET,FT-IR,TEM and XRD.Results showed that the catalyst had suitable specific area and its H0 -11.93.Structure of Zr-O-Ti and chelating SO42- were formed during cacination and no crystall was found.The surface structure changed obviously after reaction.