河北化工
河北化工
하북화공
HEBEI CHEMICAL ENGINEERING AND INDUSTRY
2012年
1期
36-38
,共3页
纳米固载杂多酸%溶胶-凝胶法%癸酸异戊酯%催化合成
納米固載雜多痠%溶膠-凝膠法%癸痠異戊酯%催化閤成
납미고재잡다산%용효-응효법%계산이무지%최화합성
nanometer complex heteropoly acid%sol-gel method%capric acid isoamyl ester%catalytic synthesis
采用溶胶-凝胶法制备纳米固载杂多酸催化剂H4SiW12O40/SiO2。以癸酸和异戊醇为原料,催化合成癸酸异戊酯。考察了影响酯化率的各种因素,确定了适宜的工艺条件：酸醇物质的量比为1∶1.6,催化剂用量为反应物料总质量的3%,环己烷用量为8 mL,反应时间为60 min,酯化率可达96.70%。
採用溶膠-凝膠法製備納米固載雜多痠催化劑H4SiW12O40/SiO2。以癸痠和異戊醇為原料,催化閤成癸痠異戊酯。攷察瞭影響酯化率的各種因素,確定瞭適宜的工藝條件：痠醇物質的量比為1∶1.6,催化劑用量為反應物料總質量的3%,環己烷用量為8 mL,反應時間為60 min,酯化率可達96.70%。
채용용효-응효법제비납미고재잡다산최화제H4SiW12O40/SiO2。이계산화이무순위원료,최화합성계산이무지。고찰료영향지화솔적각충인소,학정료괄의적공예조건：산순물질적량비위1∶1.6,최화제용량위반응물료총질량적3%,배기완용량위8 mL,반응시간위60 min,지화솔가체96.70%。
Nanometer complex heteropoly acid （H4SiW,2040/SiO2） was prepared by the sol-gel method.Catalytic synthesis of capric acid isoamyl ester from capric acid and isoamyl alcohol.Inspected the influence esteriflcation rate factor, the opti- mum conditions was that molar ratio of capric acid to isoamyl alcohol was 1 ： 1.6,the mass fraction of catalyst in the reac- tion medium was 3%,cyclohexane amount was 8 mL,and the reaction time was 60 min,the esterification rate was 96.70%.
