Triton X-100辅助合成多级孔道结构ZSM-5沸石催化剂(英文)  

Hierarchical ZSM-5 catalyst synthesized by a Triton X-100 assisted hydrothermal method

作　　者：S.Narayanan J.Judith Vijaya S.Sivasanker Sihai Yang L.John Kennedy 

机构地区：[1]Catalysis & Nanomaterials Research Laboratory, Department of Chemistry, Loyola College (Autonomous) [2]National Centre for Catalysis Research, Indian Institute of Technology [3]School of Chemistry, University of Nottingham, University Park [4]Materials Division, School of Advanced Sciences, Vellore Institute of Technology (VIT) University

出　　处：《催化学报》2014年第11期1892-1899,共8页

摘　　要：ZSM-5 zeolite with a hexagonal cubic morphology was synthesized by a hydrothermal method using Triton X-100, a nonionic surfactant. The samples prepared with and without the surfactant were characterized by X-ray diffraction(XRD), Fourier transform infrared spectroscopy, N2 adsorption, high resolution transmission electron microscopy(TEM), high resolution scanning electron mi-croscopy, energy dispersive X-ray analysis, and NH3 temperature-programmed desorption. The XRD patterns confirmed the formation of a pure ZSM-5 crystalline phase without secondary phases. TEM images revealed that the hexagonal cubes were made of peanut-shaped nanoparticles with voids.The catalytic activity of the zeolite samples was evaluated using the selective oxidation of benzyl alcohol with tertiary-butyl hydrogen peroxide as the oxidant at 90 °C. The surfactant-assisted prep-aration yielded a zeolite that gave a higher conversion than the one prepared in the absence of the surfactant. The catalyst was retrieved and reused four times without significant loss in activity and selectivity.ZSM-5 zeolite with a hexagonal cubic morphology was synthesized by a hydrothermal method using Triton X-100, a nonionic surfactant. The samples prepared with and without the surfactant were characterized by X-ray diffraction （XRD）, Fourier transform infrared spectroscopy, N2 adsorption, high resolution transmission electron microscopy （TEM）, high resolution scanning electron mi-croscopy, energy dispersive X-ray analysis, and NH3 temperature-programmed desorption. The XRD patterns confirmed the formation of a pure ZSM-5 crystalline phase without secondary phases. TEM images revealed that the hexagonal cubes were made of peanut-shaped nanoparticles with voids. The catalytic activity of the zeolite samples was evaluated using the selective oxidation of benzyl alcohol with tertiary-butyl hydrogen peroxide as the oxidant at 90 °C. The surfactant-assisted prep-aration yielded a zeolite that gave a higher conversion than the one prepared in the absence of the surfactant. The catalyst was retrieved and reused four times without significant loss in activity and selectivity.

关 键 词：ZSM-5催化剂 TRITON 水热法合成 X-100 非离子表面活性剂 ZSM-5沸石 高分辨透射电子显微镜 傅立叶变换红外光谱 

分 类 号：O643.36[理学—物理化学]