高师理科学刊
高師理科學刊
고사이과학간
JOURNAL OF SCIENCE OF TEACHERS＇ COLLEGE AND UNIVERSITY
2014年
1期
59-62
,共4页
磷钒钼钨杂多酸%催化酯化%肉桂酸正丁酯
燐釩鉬鎢雜多痠%催化酯化%肉桂痠正丁酯
린범목오잡다산%최화지화%육계산정정지
P-V-Mo-W heteropolyacids%catalytic esterification%n-butyl cinnamate
利用正交实验设计研究了Keggin型P-V-Mo-W四元系列杂多酸H4PVMoxW11-xO40·nH2O （x=1，2，3，4）催化肉桂酸和正丁醇合成肉桂酸正丁酯的反应．结果表明，最佳反应条件为：正丁醇与肉桂酸的物质的量比为1.2∶1，催化剂的用量为肉桂酸质量的0.5%，反应时间为1.5 h．该系列杂多酸随着钼、钨原子比例的增加，酯化率提高．
利用正交實驗設計研究瞭Keggin型P-V-Mo-W四元繫列雜多痠H4PVMoxW11-xO40·nH2O （x=1，2，3，4）催化肉桂痠和正丁醇閤成肉桂痠正丁酯的反應．結果錶明，最佳反應條件為：正丁醇與肉桂痠的物質的量比為1.2∶1，催化劑的用量為肉桂痠質量的0.5%，反應時間為1.5 h．該繫列雜多痠隨著鉬、鎢原子比例的增加，酯化率提高．
이용정교실험설계연구료Keggin형P-V-Mo-W사원계렬잡다산H4PVMoxW11-xO40·nH2O （x=1，2，3，4）최화육계산화정정순합성육계산정정지적반응．결과표명，최가반응조건위：정정순여육계산적물질적량비위1.2∶1，최화제적용량위육계산질량적0.5%，반응시간위1.5 h．해계렬잡다산수착목、오원자비례적증가，지화솔제고．
n-butyl cinnamate was synthesized with cinnamic acid and n-butyl alcohol by orthogonal experimental design while the Keggin-type P-V-Mo-W heteropolyacids H4PVMoxW11-xO40 ·nH2O(x=1,2,3,4)were chosen as catalysts.The results showed that the optimum conditions are as follows,the mole ratio of n-butyl alcohol to cinnamic acid is 1.2∶1,the mass ratio of catalyst to cinnamic acid is 0.5%and reflux time is 1.5 h.Along with the ratio of molybdenum and wolfram atom in this Keggin-type P-V-Mo-W heteropolyacids increasing, the esterification rate was improved.
