ONE-STEP SYNTHESIS OF ALKYLTRIMETHYLAMMONIUM-INTERCALATED MAGADIITE
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dc.contributor.author | Pastore H.O. | |
dc.contributor.author | Munsignatti M. | |
dc.contributor.author | Mascarenhas A.J.S. | |
dc.date.accessioned | 2021-02-03T02:20:27Z | |
dc.date.available | 2021-02-03T02:20:27Z | |
dc.date.issued | 2000 | |
dc.identifier | https://elibrary.ru/item.asp?id=31929042 | |
dc.identifier.citation | Clays and Clay Minerals, 2000, 48, 2, 224-229 | |
dc.identifier.issn | 0009-8604 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/24477 | |
dc.description.abstract | Cetyltrimethylammonium-and tetradecyltrimethylammonium-intercalated magadiites were prepared by direct syntheses, starting from sodium metasilieate (NaaO/SiO2 = 1.0) and nitric acid. Total substitution of sodium by cetyltrimethylammonium or tetradecyltrimetbylammoniurn cations was not achieved in the range of surfactant : silicon molar ratios used in this study. When a phosphoniun-based surfactant replaces the ammonium surfactants in the same procedure, the result of the synthesis is a mixture of quartz and unmodified surfactant. If dodecylammonium bromide is used, an MCM-41 molec-ular sieve is obtained. The substitution of the silicon source by tetramethylammonium silicate or of nitric acid by hydrochloric, hydrofluoric, or acetic acids also yields MCM-41 molecular sieves, indicating that the formation of magadiite is greatly dependent on the presence of sodium cations and nitrate anions. | |
dc.title | ONE-STEP SYNTHESIS OF ALKYLTRIMETHYLAMMONIUM-INTERCALATED MAGADIITE | |
dc.type | Статья |
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