杂多酸及其季铵盐催化剂催化H2O2环氧化1-辛烯.pdf

第1期
化学世界
杂多酸及其季铵盐催化剂催化H12O2环氧化1-辛烯
聂丽娟·,王可“,田世炯,李响敏
(南昌大学a.理学院化学系;b.中德联合研究院,江西南昌330047)
摘要:用杂多酸与季铵盐反应制备了杂多酸季铵盐型催化剂(HQWP和Q2PW4O)s),并对其进
行了红外FTIR及元素分析。分别以磷钼酸,HQWP,3-复丙基三甲氧基硅烷改性硅胶负载磷钨
酸,Q,PW,O1。,磷钨酸,磷钨酸钠为催化剂,H2O)2为氧化剂,对1辛烯进行环氧化反应,产率分别
为3.31%、31.20%、81.42%、80.02%、94.80%、84.61%。还做了催化剂重复使用实验,其结果表
明:Q3PW:O和HQWP两种催化剂可以重复使用3次,平均产率分别为76.63%和24.54%,其他
的反应产率下降明显。另外对用Q2PW1Os和HQWP为催化剂的1-辛烯环氧化反应进行了条件
优化
关键词:杂多酸;季铵盐;HQWP;QPW:O26;砗钨酸;H2O2;1辛烯
中图分类号:()629
文献标志码:A
文章编号:0367-6358(2014)01-0029-05
Preparation of Heteropoly Acid and Its Quaternary Ammonium
Salt Catalysts for H2O Oxidation of 1-octene
NIE Li-juan*, WANG Ke, TIAN Shi-jong, LI Xiang-min
(Nanchang University a. Deartment of Chemistry, College of Sciences; b. Jiangzioa1 Joint Research nstitute
Nanchang 330047, China)
Abstract: The heteropoly acid quaternary ammonium salts
Its of HQWP (Peroxo complexes of(LCI H33 N
(CH,),l[PW,2O ])and Q PW, O,s([Cis H N*(H, ) ] [PW, O,]") were synthesized by using the
reaction of heteropoly acid and quaternary ammonium salts. The structure and composition of the catalysts
were identified by means of IR and elemental analysis. The phosphomolybdic acid, HQWP, 3-aminoprop
trimethoxysilane modified silica supported phosphotungstic acid, Q PW,Os, phosphotungstic acid and
sodium phosphotungstate were used as catalysts and H, O, was used as oxidant for the oxidation of I-oc
tene
ld for the si
%、31.20%、81.42%、80.02%、94.80%、and84.61%
spectively. Meanwhile, the re-utilization of the six catalysts was also studied. The results showed that the
average yield for HQWP and Q, PW,O,s were 24. 54% and 76.63%, respectively, and the yield for the
ed little change. However, the reaction yields for the other catalysts were all de
clined sharply, suggesting the good re-utilization of Q, PW,O and HQWP. Moreover, the
le ettects of reac-
tion conditions were also investigated by three-factor orthogonal experiments
Key words: heteropoly acid; quaternary ammonium salts; HQWP; Q PW, s; phosphotungstic acid
H2 O2; 1-octene
收稿日期:2012-1-29;修回日期:201303
甚金项目:江西省教育厅资助项目(GJ10292
作者简介:聂丽娟(1965-)女,江西抚州人,硕士,副教授,主要从事有机合成研究。E-mait:nielijuan65@aliyu.com