Szczegóły publikacji
Opis bibliograficzny
NMR and IR study of kaolinite intercalation compounds with benzylalkylammonium chlorides / Jakub MATUSIK, Zenon KŁAPYTA, Zbigniew Olejniczak // Applied Clay Science ; ISSN 0169-1317. — 2013 — vol. 83–84, s. 426–432. — Bibliogr. s. 431–432, Abstr.
Autorzy (3)
- AGHMatusik Jakub
- AGHKłapyta Zenon
- Olejniczak Zbigniew
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 77395 |
|---|---|
| Data dodania do BaDAP | 2013-11-26 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.clay.2013.07.008 |
| Rok publikacji | 2013 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Applied Clay Science |
Abstract
Novel intercalation compounds of kaolinite with selected benzylalkylammonium chlorides, obtained using methoxy-kaolinite as a precursor, were characterized by C-13, Al-27, and Si-29 solid-state NMR and infrared (FTIR) spectroscopy. The analyses allowed the confirmation of both the formation and structure of precursors (kaolinite-dimethyl sulfoxide and methoxy-kaolinite), as well as the intercalation compounds. According to the C-13 CP-MAS NMR spectra of the derivatives with benzyltrimethylammonium chloride (B1), the methyl groups of the molecules, arranged in a monolayer, were keyed into the ditrigonal holes of the kaolinite tetrahedral sheet The local environment of internal carbons of benzyltributylammonium chloride (B2) butyl chains was mostly perturbed during intercalation. In turn, the structure of the benzyldimethylhexadecylammonium chloride (B5) after intercalation was changed from the solid-like to liquid-like conformation with an increase of gauche conformers, which was attested both by C-13 CP-MAS NMR and FTIR. The C-13 CP-MAS NMR analysis confirmed that the methoxyl groups attached to the octahedral surface of methoxy-kaolinite were not affected by intercalation. The Al-27 and Si-29 MAS NMR did not show any significant distortion of the Al-octahedra and Si-tetrahedra after intercalation of the organic salts. The IR analyses indicated an increased amount of intercalated water with the increase of initial salt concentration. (C) 2013 Elsevier B.V. All rights reserved.
