Layered Solids
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. BIONANOCOMPÓSITOS POLIMÉRICOS À BASE DE MONTMORILLONITA – MATERIAIS DE INTERESSE CONTÍNUO
Polymeric bionanocomposites are versatile materials that have many practical applications. The wide use of these materials is mainly due to their structure and properties, which combine at nanometric scale, the functionality of biopolymers with the excellent stability of inorganic solids, such as the clay minerals family. Montmorillonite is the most widely e
Quím. Nova. Publicado em: 2020-12
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2. ÓXIDOS METÁLICOS DERIVADOS DE MATERIAIS TIPO HIDROTALCITAS CONTENDO Ga3+ COMO CATALISADORES PARA SÍNTESE DE BIODIESEL ETÍLICO
Summary: The synthesis of like-hydrotalcites materials (layered double hydroxides - LDHs) with molecular formula MgxM3+y(CO3)(OH)16·4H2O in different ratios Mg2+/M3+ where M3+ is Al3+, Ga3+ or both was carried out by the coprecipitation method to be applied in the transesterification reactions for synthesis of ethyl biodiesel from soybean oil and ethanol. T
Quím. Nova. Publicado em: 2017-06
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3. Ácidos silícicos lamelares intercalados e organofuncionalizados aplicados à sorção e termodinâmica de interação / Intercalated and organofunctionalized lamellar silicic acids applied to sorption and thermodynamic interaction
Os ácidos silícicos magadeíta, kaneíta, e kanemita, com fórmula geral, Na2O(4-22)SiO2.(5-10)H2O, definem uma classe de compostos com arranjos lamelares distintos, cujas estruturas permitem não somente intercalações, como também reações de imobilização, uma vez que as propriedades físicas dos silicatos incluem uma elevada capacidade na troca de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/08/2010
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4. Synthesis, characterization and study of catalytical properties of mixed layered hydroxides containing Cu(II)/Mg(II)/Al(III) / Síntese, caracterização e estudo de propriedades catalíticas de hidróxidos mistos lamelares contendo Cu(II)/Mg(II)/AI(III)
In this work it was investigated the preparation and spectroscopic characterization of layered hydroxides of composition [Mg3-xCuxAl(OH)8](CO3)0.5.yH2O (x = 0.3; 0.6; 0.9; 1.2; 1.5; 1.8; 2.1; 2.4; 2.7 and 3.0), as well the reactivity of these materials towards phenol hydroxylation, using hydrogen peroxide as oxidizing agent. The solids had been prepared thro
Publicado em: 2005
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5. On the Nature of Sandwiched Chromium Complexes in Exchanged alpha-Zirconium Phosphate
Layered alpha-zirconium hydrogenphosphate monohydrate was prepared by direct precipitation, exchanged with n-propylamine and then by chromium aquacomplexes. The solids were characterized by X-ray diffraction, mass spectrometry, infrared and UV-Visible spectroscopy. The results suggest that monomer complexes form extended, hydrogen bonded, sandwiched monolaye
Materials Research. Publicado em: 2002-10
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6. Preparação, caracterização, reações de intercalação e decomposição termica de hidroxidos duplos e amelares contendo Cd, Mg e Zn
In this work we have prepared Layered Double Hydroxides (LDH) using different divalent metals, aluminium as the trivalent metal, and nitrate and carbonate as the counter anions. These LDHs are bidimensional compounds which alternate positively charged layers formed by the metal atoms and hydroxyl groups and negatively charged layers formed by the counter ani
Publicado em: 1992