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Realumination of zeolite Y under acidic conditions

✍ Scribed by Yasunori Oumi; Jou Takahashi; Kazuyoshi Takeshima; Hery Jon; Tsuneji Sano

Book ID
106424783
Publisher
Springer
Year
2006
Tongue
English
Weight
277 KB
Volume
14
Category
Article
ISSN
1380-2224

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H4EDTA-and SiCI4-vapor-dealuminated zeolite Y were realuminated with aqueous solutions of NaAIO2 and NaOH. The products were characterized by using XRD, MAS n.m.r., F-/3.r., and second-derivative F'/].r. techniques. The results clearly show that insertion of aluminum species into the frameworks of t

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The reversibility of dealumination±realumination process of BEA zeolite by pH control was investigated by means of nitrogen adsorption, XRD, 27 Al MAS NMR and FT-IR. Aluminum species in the solution, which were eliminated from the framework of BEA zeolite by HCl treatment, were easily reinserted int