Fe-V/SBA-15催化剂的制备及其对苯催化性能的研究  

Preparation of Fe-V/SBA-15 catalytic oxidation catalysts

作　　者：盛娅 葛强 李增和[1] 陈晨[1] 

机构地区：[1]北京化工大学理学院,北京100029 [2]北京北分瑞利分析仪器有限责任公司,北京100095

出　　处：《北京化工大学学报（自然科学版）》2016年第4期13-19,共7页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：用传统的水热晶化法合成SBA-15分子筛,采用后嫁接合成法,将SBA-15表面的活性硅羟基Si—OH和金属铁、钒的氧化物进行反应,得到Fe-V/SBA-15催化剂,利用X-射线粉末衍射(XRD)、傅里叶红外光谱(FT-IR)、比表面积(BET)、扫描电镜(SEM)、透射电镜(TEM)、X射线光电子能谱(XPS)对合成样品进行了表征与分析。将催化剂用于苯催化性能的研究,通过H_2O_2一步法将苯羟基化制苯酚,系统研究了反应条件对催化剂催化性能的影响。结果表明,Fe-V/SBA-15展现了很好的催化性能,在较短的反应时间内,苯的转化率达到23%,苯酚的选择性达到94%。SBA-15 molecular sieve was synthesized by a conventional hydrothermal synthesis method and converted to Fe- V/SBA-15 by a grafting method using the reaction of metallic iron and vanadium oxide with the active silanol groups on the surface of SBA-15（ Si—OH）. The prepared catalysts were characterized by X-ray diffraction,Fourier transform infrared spectroscopy,scanning electron microscopy,transmission electron microscopy,and X-ray photoelectron spectroscopy. The catalytic properties of the material were investigated using the preparation of phenol by the one-step hydroxylation of benzene with H_2O_2 as a probe reaction. The effects of varying the reaction conditions on the catalytic performance were studied systematically. Fe- V/SBA-15 showed excellent catalytic performance.Moreover,the benzene conversion rate reached 23%,phenol selectivity up to 94% when using shorter reaction times.

关 键 词：SBA-15 苯 苯酚 H2O2一步法 催化 

分 类 号：O613.72[理学—无机化学]