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Hierarchical ZSM-5 catalyst synthesized by a Triton X-100 assisted hydrothermal method
Subramanian Sivasanker, Narayanan S, Judith Vijaya J, Sivasanker S, Yang S, John Kennedy L
Published in Science Press
2014
Volume: 35
   
Issue: 11
Pages: 1892 - 1899
Abstract
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 microscopy, 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 ℃. The surfactant-assisted preparation 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. © 2014, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
About the journal
JournalCuihua Xuebao/Chinese Journal of Catalysis
PublisherScience Press
ISSN02539837
Open AccessNo
Concepts (24)
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    Catalysis
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    Catalyst activity
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    Catalyst selectivity
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    CATALYSTS
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    Catalytic oxidation
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    Electron microscopy
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    Energy dispersive x ray analysis
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    Fourier transform infrared spectroscopy
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    Hydrothermal synthesis
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    Nonionic surfactants
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    Scanning electron microscopy
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    Surface active agents
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    TEMPERATURE PROGRAMMED DESORPTION
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    X ray analysis
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    X ray diffraction
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    Crystalline phase
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    HIERARCHICAL ZSM-5
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    HIGH-RESOLUTION SCANNING ELECTRON MICROSCOPIES
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    Hydrothermal methods
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    Selective oxidation
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    Surfactant assisted
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    Triton x-100
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    ZSM-5 ZEOLITES
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    High resolution transmission electron microscopy