Preparation of magnetic hollow ZSM-5/Ni composite spheres

Jinlong Jiang, Jianfeng Yao, Changfeng Zeng, Lixiong Zhang, Nanping Xu

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21 Citations (Scopus)

Abstract

This paper presents a method for the preparation of magnetic hollow ZSM-5/Ni composite spheres. ZSM-5/Ni/PS spheres were firstly synthesized by assembling ZSM-5 nanoparticles on the surfaces of Ni/PS spheres, followed by hydrothermal treatment to form a compact ZSM-5 layer. Magnetic hollow ZSM-5/Ni spheres were subsequently obtained by calcination and reduction of the ZSM-5/Ni/PS spheres. The samples were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), thermogravimetry (TG), energy dispersive X-ray spectroscopy (EDX), temperature-programmed reduction (TPR) and a vibrating sample magnetometer (VSM). A continuous ZSM-5 layer with a thickness of 400 nm was formed on the surface of Ni/PS spheres after one cycle of adsorption of ZSM-5 nanoparticles and hydrothermal treatment at 80 A?C for 36 h. By changing the hydrothermal treatment time, the thickness of zeolite layer can be controlled. The hollow ZSM-5/Ni spheres inherited magnetic property from the nickel layer and their magnetization value could be adjusted by varying the thickness of the nickel layers.
Original languageEnglish
Pages (from-to)450 - 457
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume112
Issue number1-3
Publication statusPublished - 2008
Externally publishedYes

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