ICCAS OpenIR
Synthesis of MCM-22 zeolite by an ultrasonic-assisted aging procedure
Wang, Baoyu1; Wu, Jianmei2; Yuan, Zhong-Yong1; Li, Niu1; Xiang, Shouhe1
2008-04-01
Source PublicationULTRASONICS SONOCHEMISTRY
ISSN1350-4177
Volume15Issue:4Pages:334-338
AbstractThe synthesis of MCM-22 zeolite under hydrothermal crystallization conditions has been performed by an ultrasonic-assisted aging procedure. The ultrasonic-assisted aging of the initial aluminosilicate gel can shorten the crystallization time of MCM-22, decrease the amount of hexamethyleneimine (HMI) used, and broaden the range of SiO2/Al2O3 ratios. By using the ultrasonic aging, pure phase of high-silica MCM-22 products with SiO2/Al2O3 > 100 can be obtained. When SiO2/Al2O3 <= 50, high crystalline MCM-22 zeolites with the reduced average crystal sizes can be made even with low HMI/SiO2 ratio of 0.05 under static crystallization conditions. The acoustic cavitation of the ultrasonic is believed to be responsible for these positive results due to its cracking the crystal seeds and improving the solubility of silicate species. (C) 2007 Elsevier B.V. All rights reserved.
KeywordMcm-22 Zeolite Aging Ultrasound Hydrothermal Crystallization
DOI10.1016/j.ultsonch.2007.07.007
Indexed BySCI
Language英语
WOS IDWOS:000254443900014
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/64196
Collection中国科学院化学研究所
Corresponding AuthorYuan, Zhong-Yong
Affiliation1.Nankai Univ, Inst New Catalyt Mat Sci, Coll Chem, Tianjin 300071, Peoples R China
2.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Wang, Baoyu,Wu, Jianmei,Yuan, Zhong-Yong,et al. Synthesis of MCM-22 zeolite by an ultrasonic-assisted aging procedure[J]. ULTRASONICS SONOCHEMISTRY,2008,15(4):334-338.
APA Wang, Baoyu,Wu, Jianmei,Yuan, Zhong-Yong,Li, Niu,&Xiang, Shouhe.(2008).Synthesis of MCM-22 zeolite by an ultrasonic-assisted aging procedure.ULTRASONICS SONOCHEMISTRY,15(4),334-338.
MLA Wang, Baoyu,et al."Synthesis of MCM-22 zeolite by an ultrasonic-assisted aging procedure".ULTRASONICS SONOCHEMISTRY 15.4(2008):334-338.
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