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题名: Static Synthesis and Crystallization Mechanism of ZSM-35 Zeolite
作者: Ju Xiaohua1, 2;  Fan Fengtao2;  Tian Fuping1;  Feng Zhaochi2
关键词: ZSM-35 zeolite ;  static synthesis ;  cyclohexylamine ;  crystallization mechanism
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2010-07-01
DOI: 10.3724/SP.J.1088.2010.91222
卷: 31, 期:7, 页:788-792
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 pure ZSM-35 zeolite was synthesized in a static hydrothermal system at 220 degrees C using cyclohexylamine as the template and silica sol as the Si source. When the initial gel contained a certain amount of K(+), the mutual role of K(+) and Na(+) inhibited the formation of mordenite, and well crystallized product was formed with n(K(+))/n(K(+)+Na(+)) = 0.3. Optimum regions of the synthetic conditions of ZSM-35 zeolite obtained by X-ray diffraction were n(M(2)O)/n(Al(2)O(3)) = 3.2-3.4 and n(SiO(2))/n(Al(2)O(3)) = 22. The building units in the precursor were identified as five-membered and six-membered silicate rings by UV-Raman spectroscopy. The intensity of the Raman band at 450 cm(-1) increased in the beginning of crystallization, and the new bands at 421, 312, and 215 cm(-1) appeared with consuming the amorphous gel, indicating that the ring species were turned out to be aggregate through the hydrothermal treatment, and finally formed ZSM-35 zeolite. The strong Raman band at 421 cm(-1) should be assigned to the bending vibration of the five-membered silicate ring, and the Raman band at 312 cm(-1) might correspond to the six-membered silicate ring of ZSM-35 zeolite framework.
语种: 英语
WOS记录号: WOS:000280868900012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141869
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.Dalian Univ Technol, Sch Chem Engn, Dept Chem, State Key Lab Fine Chem, Dalian 116024, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Ju Xiaohua,Fan Fengtao,Tian Fuping,et al. Static Synthesis and Crystallization Mechanism of ZSM-35 Zeolite[J]. CHINESE JOURNAL OF CATALYSIS,2010,31(7):788-792.
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