Fe-MCM-41介孔材料的合成、表征及催化性能研究  

Synthesis, Characterization of Fe-MCM-41 and Its Catalytic Properties in the Liquid-Phase Oxidation of Benzene

作　　者：罗根祥[1] 陈平[1] 肖进兵[1] 刘春生[1] 秦永航[1] 

机构地区：[1]抚顺石油学院材料科学系,辽宁抚顺113001

出　　处：《石油化工高等学校学报》2001年第1期33-36,共4页Journal of Petrochemical Universities

摘　　要：采用硅酸钠为硅源 ,以十六烷基三甲基溴化铵作为模板剂 ,四甲基氢氧化铵为矿化剂 ,用盐酸调节 pH值 ,在 75℃的温和水热条件下 ,合成了Fe -MCM -4 1中孔分子筛。产品经粉末X衍射、N2吸附 /脱附、红外光谱分析等手段进行了表征。结果表明 ,在实验条件下经 1 6h晶化 ,产品有较满意的结晶度和介孔分子筛的结构特征。用H2 O2 为氧化剂 ,合成的Fe -MCM -4 1作为催化剂 ,详细考察了溶剂、反应时间、催化剂用量等条件对苯的羟基化反应的影响。反应产物用气相色谱检测 ,结果表明 ,Fe -MCM -4 1能有效催化苯的羟基化反应 ,且苯酚为唯一产品。Sodium silicate was used as the silica source, CTMABr and TMAOH were used as template and mineralizer respectively. The pH value of the mixture was adjusted with HCl (12 mol &middot L-1) Fe-MCM-41 were successfully synthesized in mild hydrothermal system at 75°C for 16 h. The product was characterized by powder X-ray diffraction (XRD), N2 adsorption/desorption and FTIR. XRD, N2 adsorption and FTIR show that the solid sample has an excellent crystalline structure and a typical mesopores characterization. Fe-MCM-41 was used as the heterogeneous catalyst for the oxidation of benzene by using H2O2 as the oxidant. The influences of solvent, reaction time and catalyst content were investigated. The liquid product was analyzed by a gas chromatograph. The result show that Fe-MCM-41 can efficiently catalyze the oxidation of benzene, and phenol is the only product of liquid phase.

关 键 词：Fe-MCM-41 合成 表征 苯 羟基化 介孔材料 催化性能 中孔分子筛 

分 类 号：TQ424.25[化学工程]