期刊
JOURNAL OF POROUS MATERIALS
卷 20, 期 1, 页码 171-176出版社
SPRINGER
DOI: 10.1007/s10934-012-9586-x
关键词
Composite; Microporous materials; Core/Shell; Catalytic properties
资金
- Natural Scientific Foundation of Shandong Province [ZR2009BQ018]
- Fundamental Research Funds for the Central Universities
A core/shell structure composite was synthesized via a new method of pre-coating one raw material. The composite was characterized by X-ray diffraction, SEM, TEM and N-2 isothermal adsorption-desorption and Py-FTIR. In addition, the catalytic performance of the composite in cracking of heavy oil for producing olefin was also investigated. The characterization results show that the composite with a core/shell structure had smaller particle size, uniform SAPO-5 shell, and fewer acid sites than ZSM-5, accelerating the transport of reactant and product molecules between different zeolites. Consequently, the light olefins on the composites had high specific selectivity.
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