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Effects of Brønsted-acid site proximity on the oligomerization of propene in H-MFI

✍ Scribed by Anton N. Mlinar; Paul M. Zimmerman; Fuat E. Celik; Martin Head-Gordon; Alexis T. Bell


Book ID
113687111
Publisher
Elsevier Science
Year
2012
Tongue
English
Weight
1014 KB
Volume
288
Category
Article
ISSN
0021-9517

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Broad-line 'H NMR and 'H MAS NMR were used to determine the geometry of the Bransted acidic sites in zeolites H-ZSM-5. The signals obtained correspond to bridging hydroxyl groups in Si-OH-Al arrangements with an H-Al distance of 0.246-0.252 nm. The concentration of hypothetical SiOHSi groups must be