硅烷化凹凸棒黏土负载杂多酸盐催化环己烷氧化反应

化工进展

硅烷化凹凸棒黏土负载杂多酸盐催化环己烷氧化反应

李贵贤1，宋维维1，马建军1，2，高云艳1，王广1，李亚珍1

1兰州理工大学石油化工学院，甘肃兰州 730050；2甘肃银光聚银化工有限公司，甘肃白银730900

出版日期:2011-07-05 发布日期:2011-07-05

Heteropolyacid salts catalysts supported on silylated attapulgite for cyclohexane oxidation

LI Guixian1，SONG Weiwei1，MA Jianjun1，2，GAO Yunyan1，WANG Guang1，LI Yazhen1

1School of Petrochemical Engineering，Lanzhou University of Technology，Lanzhou 730050，Gansu，China；2Gansu Yinguang Juyin Chemical Limited Company，Baiyin 730900，Gansu，China

Online:2011-07-05 Published:2011-07-05

摘要/Abstract

摘要：

以硅烷化凹凸棒黏土为载体，满孔浸渍法制备了负载型杂多酸盐催化剂，采用X射线衍射、比表面积测定、傅里叶变换红外光谱等手段对催化剂进行了表征。分别考察了双氧水用量、杂多酸盐负载量及循环使用次数等因素对环己烷氧化反应的影响。结果表明，负载型杂多酸盐CoH₇P₂Mo₁₅V₃O₆₂能显著提高环己烷氧化能力；催化剂回收烘干后可直接重复利用，催化活性没有明显降低。在优化条件下，环己烷转化率达到35.28%，目标产物环己醇和环己酮的总收率达到12.48%。实验表明，负载型杂多酸盐CoH₇P₂Mo₁₅V₃O₆₂是一种具有应用前景的催化剂，便于与产物分离，且对设备和环境污染小。

Abstract:

Heteropolyacid salts catalysts supported on silylated attapulgite were prepared by incipient wetness impregnation and characterized by XRD，BET，FTIR. The effects of the amount of H₂O₂，heteropolyacid salts catalysts loading and recycling times on cyclohexane oxidation was evaluated. The results show that the supported CoH₇P₂Mo₁₅V₃O₆₂ enhanced cyclohexane oxidation. Recycle catalyst can be directly reused after drying，and catalytic activity was not significantly reduced. Under the optimal conditions，the conversion of cyclohxane was 35.28 % and the total yield of cyclohexanol and cyclohexanone was 12.48%. Experiments showed that the supported CoH₇P₂Mo₁₅V₃O₆₂ heteropolyacid salts was one kind of promising catalyst，which could facilitate separation of products，require few pieces of equipment and cause less environmental pollution.

李贵贤1，宋维维1，马建军1，2，高云艳1，王广1，李亚珍1. 硅烷化凹凸棒黏土负载杂多酸盐催化环己烷氧化反应 [J]. 化工进展.

LI Guixian1，SONG Weiwei1，MA Jianjun1，2，GAO Yunyan1，WANG Guang1，LI Yazhen1. Heteropolyacid salts catalysts supported on silylated attapulgite for cyclohexane oxidation[J]. Chemical Industry and Engineering Progree.