Solid-State Intercalation of Naphthalene and Anthracene into Alkylammonium-Montmorillonites

Abstract

Abstract--Intercalation of naphthalene and anthracene into alkyltrimethylammonium (C, H2. + ~ (CH3)3N+; n = 8, 12, 14, 16, and 18)-montmorillonites was carried out by novel solid-solid reactions at room temperature. Octyltrimethylammoniurn(C8)-montmorillonite did not form an intercalation compound with either naphthalene or anthracene. Naphthalene was intercalated into both dodecyltrimethylammonium(C12)-and octadecyltrimethylammonium(C18)-montmorillonites to give intercalation compounds. On the other hand, the solid-solid reaction between dodecyltrimethylammonium(C 12)-or tetradecyltrimethylammonium(C 14)-montmorillonite and anthracene gave only partly intercalated compounds while hexadecyltrimethylammonium(C16)-and octadecyltrimethylammonium(C18)-montmorillonites gave single phase intercalation compounds. The hydrophobic interactions between alkytammoniummontmorillonites and the aromatic compounds are thought to be the driving force for the solid-state intercalation. The extent of the increase in the basal spacing may also be involved in the different reactivity.

Magnetic fluids for synthesis of the stable adduct -Fe2O3/CTAB/Clay

“…And a weight loss of ca. 10.803 wt% in the range of 200-500 1C is due to the decomposition of CTAB intercalated in the layered aluminosilicate [23]. The dehydration of OH groups in the silicate layer is realized between 510 and 750 1C [24], representing $3.098 wt%, and another weight loss of 0.356 wt% between 750 and 1000 1C is probably associated with crystalline transformations of montmorillonite layers [25].…”

Study on the structure and properties of cyanate ester/bentonite nanocomposites

“…Polymer‐clay nanocomposites were first introduced in the literature as early as 1984, when Roy and Komarneni first got multiphase nanocomposites by the sol‐gel way 7. Numerous methods to prepare polymer‐clay nanocomposites have been developed in the past decades 8–10. For example, Messersmith et al have achieved intercalated morphologies using epoxy resin 11.…”

Effect of organic modifier type of montmorillonite on the poly (butyl acrylate-co-methyl methacrylate)/montmorillonite nanocomposite

“…The basal spacing of TEM-Mt was 1.36 nm. This corresponded to an interlayer opening of 0.4 nm after subtraction of Mt layer thickness of 0.96 nm [33]. The organic ion arrangement in TEM-Mt could be considered as monolayer.…”