𝔖 Bobbio Scriptorium
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MAS NMR and IR studies on ZSM-5-type boroaluminozeolites

✍ Scribed by E. Brunner; D. Freude; M. Hunger; H. Pfeifer; W. Reschetilowski; B. Unger

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
348 KB
Volume
148
Category
Article
ISSN
0009-2614

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✦ Synopsis

B MAS NMR proves that incorporation of boron into ZSMJ zeolitic frameworks takes place when boric acid is present in the reaction mixture. The incorporated boron is removed by subsequent calcination, ion exchange, deammoniation, pelletization and time on stream. 'H MA!3 NMR and IR spectroscopy show that OH groups introduced into the framework by boron substitution are non-acidic.

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