Title of article
Effect of Aluminum Source on Hydrothermal Synthesis of High-Silica Mordenite in Fluoride Medium, and Its Thermal Stability
Author/Authors
Oumi، Yasunori نويسنده , , Sano، Tsuneji نويسنده , , Teranishi، Toshiharu نويسنده , , Sasaki، Hitoshi نويسنده , , Itabashi، Keiji نويسنده , , Lu، RBaowang نويسنده , , Tsuda، Tomohiro نويسنده ,
Issue Information
ماهنامه با شماره پیاپی سال 2004
Pages
-285
From page
286
To page
0
Abstract
Effect of an aluminum source on the direct hydrothermal synthesis of high-silica mordenite-type zeolite in the presence of tetraethylammonium and fluoride ions was investigated. Highly crystalline MOR-type zeolites with a Si\Al ratio of approximately 30 were successfully prepared using Al(NO3)3 as an aluminum source. To clarify the role of fluoride ions, NaF as a fluoride source was added in the course of crystallization process. It was found that the crystallinity and the Si\Al ratio of MOR-type zeolite do not depend on the addition time of NaF. However, the content of fluorine in the as-synthesized zeolite decreased markedly when NaF was added in the course of crystallization process. The decrease in fluorine content improved considerably the thermal stability of the as-synthesized MOR-type zeolite
Journal title
CHEMISTRY OF MATERIALS
Serial Year
2004
Journal title
CHEMISTRY OF MATERIALS
Record number
114976
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