氨基功能化3DOM大孔硅铝催化材料的研究

以九水硝酸铝为铝源,正硅酸乙酯(TEOS)为硅源,三维有序聚苯乙烯(PS)微球为模板剂,合成三维有序大孔硅铝材料,对其采用后嫁接法引入氨基,制备含有氨基不同铝硅比的酸碱双功能催化剂。用扫描电镜显微镜(SEM)、红外光谱(FT-IR)、能谱(EDS)、X射线衍射(XRD)对样品进行表征。考察了它们在苯甲醛与乙酸酐反应合成肉桂酸反应中的催化性能。结果表明,得到的硅铝材料具有三维有序大孔结构,孔径约为250 nm,孔壁约为50 nm,孔容约为0.6 cc/g,比表面积约为80 m2/g。所制备的酸碱催化剂对肉桂酸反应表现良好的催化性能。Si/Al物质的量比为8,氮元素元素百分比为5.16%的NH2-3DOMSiO2-Al催化活性最好,肉桂酸收率为61.93%。

Study on Catalytic Material of Amino Functionalized 3DOM Macroporous Aluminiumsilicon

Three-dimensional ordered macroporous silicon-aluminum materials were synthesized using Al（ NO3） 3 as a Al source,tetraethoxysilane（ TEOS） as a silica source,and dimensionally ordered polystyrene（ PS） microspheres as a template,and were aminated. Then the catalysts which contained acid-base bifunction were synthesized with different amino Si-Al ratio. The obtained materials were fully characterized by SEM,physical adsorption, FT-IR,EDS and. XRD. The catalytic performance was investigated in the cinnamic acid synthesis reaction using benzaldehyde and acetic anhydride. The results indicated that silicon-aluminum materials had a three-dimensional ordered macroporous structure. Pore size： was about 250nm,hole wall was approximately 50 nm,pore volume was about 0. 6 cc / g,surface area was about 80 m2/ g. The acid-base catalysts had good catalytic performance in the cinnamic acid synthesis reaction. The catalytic activity of NH2-3DOMSiO2-Al was best when Si-Al ratio was 8 and nitrogen percentage was 5. 16%. Cinnamic acid yield was 61. 93%.