杂多酸低共熔剂耦合体系用于苯乙烯氧化羧化反应  

Polyoxometalates and deep eutectic solvents coupling system for the oxidative carboxylation of styrene

作　　者：王松 巩浩 吕宏缨[1] WANG Song;GONG Hao;LÜHongying(College of Chemistry and Chemical Engineering,Yantai University,Yantai,Shandong 264005)

机构地区：[1]烟台大学化学化工学院,山东烟台264005

出　　处：《化工生产与技术》2021年第2期9-12,I0002,共5页Chemical Production and Technology

摘　　要：合成了一系列Anderson型杂多酸(POMs),并考察了不同杂原子、不同钨钼比以及不同阳离子基团对苯乙烯氧化羧化反应活性的影响,制备了一系列低共熔剂(DESs)用于耦合POMs体系催化氧化羧化反应,并探究了DESs不同摩尔比的氢键供体与氢键受体对反应的影响。结果表明,最佳的催化剂为(NH_(4))_(4)Ni(OH)_(6)Mo_(3)W_(3)O_(18)。在POMs与DESs耦合体系中,当反应时间为10 h、氧化剂用量为4.7 mmol、反应温度为80℃、催化剂用量为40 mg时,碳酸苯乙烯酯的产率最高,达到了35.5%。这种耦合体系可为串联反应的进行提供一种新的思路。A series of Anderson-type Polyoxometalates(POMs)were synthesized and explored for the oxidative carboxylation of styrene,which contain the different heteroatoms,ratios of W and Mo and cationic groups.The(NH_(4))_(4)Ni(OH)_(6)Mo_(3)W_(3)O_(18)was chosen as the best catalyst.Besides,a series of deep eutectic solvents(DESs)were prepared and coupled the POMs system to catalytic the reaction.The influence of different molar ratios of DESs on the reaction was discussed.In the coupling system of POMs and DESs,when the time was 4 h and the dosage oxidant was 4.7 mmol with 40 mg catalyst at 80℃,the yield of styrene carbonate(SC)is the highest,reaching to 35.5%.This coupling system provides a new way for tandem reactions.

关 键 词：Anderson型杂多酸 氧化羧化 耦合体系 碳酸苯乙烯酯 

分 类 号：TQ245.24[化学工程—有机化工]