摘要
用稀土元素铈取代磷钼钒杂多酸合成了Keggin型稀土铈磷钼钒四元杂多酸盐(Ce HPMo11VO40·n H_2O),采用XRD和FTIR对该杂多酸盐的结构进行了表征。并将其作为催化剂应用于H_2O2氧化环己烷制备环己醇和环己酮的反应中,考察了催化剂用量、反应温度、反应时间、H_2O2用量对反应的影响。实验结果表明:反应最佳条件为n(环己烷)=0.1mol,n(Ce HPMo11VO40·n H_2O)=0.2 mmol、反应温度为75℃、反应时间为9 h、n(H_2O2)=0.2 mol(质量分数为30%),在此条件下,环己烷的转化率达到41.29%,环己醇和环己酮的总收率可达27.49%。
Keggin-type rare earth ceriummolybdovanadophosphoric of four yuan heteropoly acid salt （CeHPMolIVO4o · nil20） has been synthesized and characterized by FTIR, X-ray diffraction. CeHPMoll V040 ·nil20 showed highest catalytic activity in the yield of eyclohexanol and cyclohexanone when cyclohexane as raw materials, H202 as oxidant, the optimum reaction conditions are investigated that theamount of eyclohexane is 0. 1 mol,the amount of CeHPMollV04o · nil20 is 0. 2 mmol,added 30% hydrogen peroxide 0. 2 mol, the reaction temperature is 75 ℃, though reacting 9h, the conversion of cyclohexane was 41.29% ,the total yield of cyclohexanol and cyclohexanone up to 27. 49%.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2016年第12期1358-1363,共6页
Fine Chemicals
关键词
铈磷钼钒杂多酸盐
过氧化氢
环己烷
环己醇
环己酮
催化技术
ceriummolybdovanadophosphoric heteropoly acid salt
cyclohexane
cyclohexanol
cyclohexanone
catalysis technology
