MCM-41负载钴催化H_2O_2氧化四氢萘合成α-四氢萘酮  

Catalytic Oxidation of Tetralin to α-Tetralone with Hydrogen Peroxide over Cobalt Loaded MCM-41

作　　者：马永平[1,2] 赵革建[1] 陶辉旺[1] 王伟[1] 李斌[1] 王家强[1] 

机构地区：[1]云南大学应用化学系,教育部自然资源药物化学重点实验室,昆明650091 [2]昆明理工大学理学院,昆明

出　　处：《应用化学》2010年第1期69-73,共5页Chinese Journal of Applied Chemistry

基　　金：“九七三”前期计划课题(2008CB617514);云南省自然科学基金项目(2007B018M和2008CD065);云南省教育厅基金(K1050534);昆明理工大学校青年基金(2007-078);昆明理工大学分析测试基金(2008-080)资助项目

摘　　要：比较了醋酸溶液中过渡金属(Fe、Co、Ni、Ce、Cu、La、Zr或Cr)掺杂MCM-41催化过氧化氢氧化四氢萘合成α-四氢萘酮的转化率和选择性,发现其中Co/MCM-41的催化活性最好。探讨了Co/MCM-41作催化剂时反应温度、反应时间、催化剂用量等对四氢萘氧化的转化率和形成四氢萘酮选择性的影响,确定了较优的反应条件:m(四氢萘)∶m(催化剂)=12.5∶1;反应温度T=383 K,反应时间8 h。四氢萘的转化率达94.7%,α-四氢萘酮的选择性达到70.3%。在反应体系中,Co/MCM-41是一种固体非均相催化剂。催化剂Co/MCM-41可回收重复使用3次,催化活性基本不变。The conversions and selectivities of the oxidation of tetralin to α-tetralone in acetic acid with H2O2 as oxidant over transition metals（Fe,Co,Ni,Ce,Cu,La,Zr and Cr） loaded MCM-41 were compared.An excellent conversion of tetralin and high selectivity of α-tetralone were also obtained when Co/MCM-41 was used.The effects of reaction temperature,reaction time and catalyst concentration on the catalyst performance were examined in order to optimize the conversion of tetralin and selectivity of α-tetralone.A selectivity of 70.3% of tetralin to α-tetralone was obtained at 94.7% conversion of tetralin under the optimum reaction condition：m（tetralin）∶m（catalyst）=12.5∶1;reaction temperature=383 K,reaction time=8 h.Co/MCM-41 act as a solid heterogeneous catalyst in the reaction system and it can be recycled three times without losing its activity to a great extent.

关 键 词：Co/MCM-41 四氢萘的氧化 α-四氢萘酮 

分 类 号：O643.3[理学—物理化学]