Ti-Co-HMS催化剂的合成、表征及其催化氧化对叔丁基甲苯的研究  

Preparation and characterization of Ti-Co-HMS catalysts and its catalytic oxidation performance on 4-tert-butyltoluene

作　　者：张金峰[1,2] 张积耀 赵建社[1] 沈寒晰[1,2] 张存社[2] 

机构地区：[1]合成与天然功能分子化学教育部重点实验室,西北大学化学与材料科学学院,陕西西安710069 [2]陕西省石油化工研究设计院,陕西省石油精细化学品重点实验室,陕西西安710054

出　　处：《印染助剂》2015年第3期10-13,共4页Textile Auxiliaries

基　　金：国家自然科学基金(21171139;21371143);陕西省科技厅科技攻关项目(2013k11-07)

摘　　要：以二氯二茂钛为钛源、HMS为载体,采用嫁接法合成了一系列不同载钛量的Ti-HMS,并结合浸渍法将钴负载于分子筛上,得到Ti-Co-HMS催化剂.采用X射线粉末衍射仪、N2吸附-脱附仪、紫外-漫反射可见光谱和傅里叶变换红外光谱等对样品进行了表征.在温和条件下进行对叔丁基甲苯的催化氧化,结果表明,催化剂样品具有较高的催化活性,对叔丁基甲苯的转化率可达47.29%,对叔丁基苯甲醛的选择性可达78.70%,收率达到31.78%.A series of Ti-HMS with different Ti loading amounts were synthesized through grafting method using titanocene dichloride as Ti source and HMS as carrier. Ti-Co-HMS catalysts were obtained by loading Co on molecular sieve through the impregnation method. The catalysts were characterized by X-ray diffraction, UV-Raman, Fourier transform infrared spectroscopy and low temperature N2adsorption-desorption methods. The catalytic oxidation of 4-tert-butyltoluene was reacted in mild conditions. The results showed that the catalysts had high catalytic activity. The conversion rate of 4-tert-butyltoluene reached 47.29%, and the selectivity of 4-tert-butylbenzaldehyde was improved to 78.70%, and the yield of 4-tert-butylbenzaldehyde was up to 31.78%.

关 键 词：分子筛 对叔丁基甲苯 选择氧化 对叔丁基苯甲醛 

分 类 号：TQ426.8[化学工程] TQ244.1