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The use of deposited nanocarbon for characterization of zeolite supported metal catalyst
Y. Chu; B. S. Zhang; Q. Zhang; Y. Wang; D. S. Su; F. Wei
2013
Source PublicationMicroporous and Mesoporous Materials
ISSN1387-1811
Volume169Pages:201-206
AbstractZeolite supported metal catalysts are widely used while the electron beam sensitive zeolite makes the characterization of the catalysts using electron microscope (EM) very difficult. Herein a sacrificial-zeolite specimen preparation (SZSP) technique is developed for the EM analysis of the catalyst. The metal particles are transferred from the zeolite support to the deposited nanocarbon generated in the metal catalyzed hydrocarbon reaction. SAPO-34 zeolite with Al2O3 binder supported Pt catalyst is employed as the model catalyst. The propane dehydrogenation reaction is carried out to deposit the nanocarbon over-layer which the Pt particles are transferred to as the new support for EM observation. The original catalyst, the deposited nanocarbon, as well as the Pt particles on the new support are characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, thermogravimetry/differential thermal analysis, Raman spectrometry, and scanning transmission electron microscope. The nanocarbon deposited on SAPO-34 and Al2O3 are of different morphologies and structures. The as-observed distribution of Pt particles on the new support suggests the enrichment of Pt on SAPO-34. The shape and size of the Pt particles as well as the strong Pt-SAPO-34 interaction are directly observed. (C) 2012 Elsevier Inc. All rights reserved.
description.department[chu, yue ; zhang, qiang ; wang, yao ; wei, fei] tsinghua univ, dept chem engn, beijing key lab green chem react engn & technol, beijing 100084, peoples r china. [zhang, bingsen ; su, dang sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; su, ds (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; dssu@imr.ac.cn ; wf-dce@tsinghua.edu.cn
KeywordZeolite Supported Metal Catalyst Nanocarbon Specimen Preparation Nanoparticle Metal-support Interaction Resolution Electron-microscopy Dehydrogenation Surfaces Clusters Sapo-34 Oxide Hydrogenation Crystalline Irradiation Adsorption
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71175
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Y. Chu,B. S. Zhang,Q. Zhang,et al. The use of deposited nanocarbon for characterization of zeolite supported metal catalyst[J]. Microporous and Mesoporous Materials,2013,169:201-206.
APA Y. Chu,B. S. Zhang,Q. Zhang,Y. Wang,D. S. Su,&F. Wei.(2013).The use of deposited nanocarbon for characterization of zeolite supported metal catalyst.Microporous and Mesoporous Materials,169,201-206.
MLA Y. Chu,et al."The use of deposited nanocarbon for characterization of zeolite supported metal catalyst".Microporous and Mesoporous Materials 169(2013):201-206.
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