Synthesis of ZSM-23/ZSM-22 intergrowth zeolite with a novel dual-template strategy

Journal Article · Tue Dec 15 00:00:00 EST 2009 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2009.07.017· OSTI ID:22202523

Wang, Bingchun ^[1]; Tian, Zhijian ^[1]; Li, Peng; Wang, Lei; Xu, Yunpeng; Qu, Wei; Ma, Huaijun; Xu, Zhusheng ^[1]; Lin, Liwu ^[2]

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1. National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)
2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)

ZSM-23/ZSM-22 intergrowth zeolite with fixed proportion of 60%ZSM-23/40%ZSM-22 has been synthesized with a novel dual-template strategy. The products were characterized by X-ray diffraction and scanning electron microscopy. Dimethylamine and diethylamine were used together as a dual-template system. The molar ratio of diethylamine to dimethylamine, which was changed with the type of aluminum source, was the key factor for the synthesis of intergrowth zeolites. A molar ratio of diethylamine to dimethylamine of 1:24 could result in an ZSM-23/ZSM-22 intergrowth zeolite if aluminum sulfate was used as aluminum source, whereas a molar ratio of diethylamine to dimethylamine of 1:12 was required to get an ZSM-23/ZSM-22 intergrowth zeolite if sodium metaaluminate was used. Furthermore, fluoride anion could be involved in the process as a crystallization promoter.

• OSTI ID: 22202523
• Journal Information: Materials Research Bulletin, Vol. 44, Issue 12; Other Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
ALUMINIUM SULFATES
CRYSTAL GROWTH
CRYSTAL STRUCTURE
CRYSTALLIZATION
SCANNING ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZEOLITES