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题名: A Comparative Study of Methanol to Olefins over SSZ-13 and RUB-50 Zeolites
作者: Li Peng1;  Zhang Weiping1;  Han Xiuwen1;  Bao Xinhe1
关键词: methanol ;  olefin ;  ethylene ;  propylene ;  SSZ-13 zeolite ;  RUB-50 zeolite ;  cage size
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2011-02-01
DOI: 10.3724/SP.J.1088.2011.00902
卷: 32, 期:2, 页:293-298
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The effect of cage size on the catalytic performance of SSZ-13 with CHA structure and RUB-50 with LEV structure has been comparatively investigated in the methanol-to-olefin (MTO) reaction. The zeolite structure and coke deposit were characterized by X-ray diffraction, N(2) adsorption-desorption, solid-state NMR, thermogravimetry and UV-Vis spectroscopy. It is found that SSZ-13 zeolite with larger cage size has better stability and higher propylene selectivity in the MTO reaction, while RUB-50 zeolite with smaller cage size has higher ethylene selectivity. Most of nonframework Al can be extracted, and the acidity is altered to some extent after the zeolites were washed with dilute acid. However, this would not obviously change the ratio of propylene to ethylene in the products. In addition, the volume of carbonaceous species is dependent on the zeolite cage size. More ethylene would be produced in the zeolite with smaller cage size. Thus, the zeolite cage size is very important in altering the ethylene and propylene selectivity in the MTO reaction.
关键词[WOS]: SOLID-STATE NMR ;  HIGH-SILICA HZSM-5 ;  TO-OLEFIN ;  CATALYST ;  CONVERSION ;  PROPYLENE ;  HYDROCARBONS
语种: 英语
WOS记录号: WOS:000287951900013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142339
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Li Peng,Zhang Weiping,Han Xiuwen,et al. A Comparative Study of Methanol to Olefins over SSZ-13 and RUB-50 Zeolites[J]. CHINESE JOURNAL OF CATALYSIS,2011,32(2):293-298.
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