纳米磷钼钒杂多酸盐催化苯羟基化合成苯酚  

Hydroxylation of Benzene into Phenol Catalyzed by Nano heteropolymolybdovanadophosphates

作　　者：石晓波[1] 莫春生[1] 李春根[2] 

机构地区：[1]湛江师范学院化学系,湛江524048 [2]江西师范大学化学学院

出　　处：《应用化学》2005年第1期19-23,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目(20261003);湛江师范学院科学研究资助项目

摘　　要：采用温室固相反应法合成了4种通式为H3MPMo10V2O40·xH2O(M=Co2+、Ni2+、Cu2+、Zn2+)的纳米金属磷钼钒杂多酸盐。考察了H2O2/C6H6摩尔比、反应介质、反应温度以及反应时间等纳米催化剂对苯羟基化反应中活性的影响。结果表明,4种过渡金属磷钼钒杂多酸盐纳米催化剂对苯羟化合成苯酚均表现出优良的催化活性,在n(H2O2)/n(C6H6)=15,m(C6H6)/m(催化剂)=25,水为溶剂,反应时间2h,反应温度70℃的反应条件下,苯酚收率大于50%,选择性高于98%。Four nano heteropolymolybdovanadophosphates H 3 MPMo 10 V 2 O 40 · x H 2 O(M=Co 2+ ,Ni 2+ ,Cu 2+ ,Zn 2+ ) were synthesized by solid state reaction at room temperature. The catalytic activity of the nano heteropoly compound catalysts for the hydroxylation of benzene to phenol with H 2 O 2 and the effects of reaction conditions were studied. The experimental results show that the yield of phenol was over 50% and the selectivity for phenol was over 98% under the optimum conditions, i.e.,H 2 O 2 /C 6 H 6 (molar ratio)=1 5 C 6 H 6 /catalyst(mass ratio)=25, reaction time 2 h, temperature 70 ℃. The four nano catalysts exhibited high activity for the hydroxylation of benzene to phenol.

关 键 词：苯 羟基化 苯酚 纳米杂多化合物 

分 类 号：O643[理学—物理化学] TQ243.1[理学—化学]