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Powder Neutron Diffraction and 29Si MAS NMR Studies of Siliceous Zeolite-Y

✍ Scribed by J.A. Hriljac; M.M. Eddy; A.K. Cheetham; J.A. Donohue; G.J. Ray


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
231 KB
Volume
106
Category
Article
ISSN
0022-4596

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The di4erent polymorphs of Y 2 Si 2 O 7 have been synthesized by a sol+gel process and by mixed-powder routes. Their ranges of stability are discussed as a function of heat-treatment and synthesis route. It appeared that amorphous sol+gel samples crystallized according to the sequence amorphousP P P