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1H-MAS n.m.r. studies of ZSM-5 type zeolites

✍ Scribed by M. Hunger; D. Freude; T. Fröhlich; H. Pfeifer; W. Schwieger


Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
204 KB
Volume
7
Category
Article
ISSN
0144-2449

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MAS NMR and IR studies on ZSM-5-type bor
✍ E. Brunner; D. Freude; M. Hunger; H. Pfeifer; W. Reschetilowski; B. Unger 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 348 KB

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