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Type, stability, and acidity of hydroxyl groups of HNaK-erionites

✍ Scribed by Andreas Kogelbauer; Johannes A. Lercher; Karl-Hermann Steinberg; Frank Roessner; Andrea Soellner; Roman V. Dmitriev

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
628 KB
Volume
9
Category
Article
ISSN
0144-2449

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πŸ“œ SIMILAR VOLUMES

A new type of acidic hydroxyl groups in
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✍ V.L. Zholobenko; L.M. Kustov; V.Yu. Borovkov; V.B. Kazansky πŸ“‚ Article πŸ“… 1988 πŸ› Elsevier Science 🌐 English βš– 310 KB

HZSM-5 zeolites and H mordenite were studied using diffuse reflectance i.r. spectroscopy in the region of stretching vibrations of hydroxyls. A new type of acidic OH groups was detected that represents a bridged hydroxyl forming a strained intramolecular hydrogen bond with a neighboring oxygen atom.

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Keywords: chemoselective polycondensation functional polymer aromatic polyester hydroxyl group sulfamino acid moiety amino acid moiety EXPERIMENTAL IPC, BES, DHG, and tetra-n-butylphosphonium bromide (TBPB) were supplied by Tokyo Kasei Kogyo Co