NDLI: Effect of Si/Al ratio and a secondary hydrothermal treatment on the properties of Al-MSU-S$

Content Provider	Springer Nature Link
Author	Yu, Jialin Li, Ming Tian, Ye Ma, Xiaoling Li, Yongdan
Copyright Year	2013
Abstract	This work reexamines the preparation condition of Al-MSU-S$_{FAU}$, which is prepared with an assembly method from zeolite Y seed colloidal, and reveals the effect of Si/Al ratio and a secondary hydrothermal treatment on the property of the material, e.g. the texture, the hydrothermal stability, the acidity and the catalytic activity. With the specific condition for preparing Al-MSU-S$_{FAU}$, the samples with high Si/Al atomic ratios are uniform, but have no crystalline structure and low hydrothermal stability. The samples with Si/Al <5 contain a significant amount of micropores. However, they are also instable and are the mixtures of zeolite Y and mesoporous material. A secondary hydrothermal treatment destroys a part of the mesopores for all the samples irrespective of the Si/Al ratios but reforms the micropores, specifically improves the micropore volume and surface area for the sample with Si/Al = 5. This sample has the long expected micro/meso composite porous structure with higher hydrothermal stability and acidity.
Starting Page	1387
Ending Page	1393
Page Count	7
File Format	PDF
ISSN	13802224
Journal	Journal of Porous Materials
Volume Number	20
Issue Number	5
e-ISSN	15734854
Language	English
Publisher	Springer US
Publisher Date	2013-06-16
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Y seed colloidal Si/Al ratios hydrothermal treatment Micropore and mesopore Composite porous zeolite Catalysis Characterization and Evaluation of Materials Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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