منابع مشابه
Synthesis, Characterization and Application of Al,Fe-Pillared Clays
Al,Fe-pillared clay was synthesized from domestic clay from Bogovina according to a common procedure: grinding, sieving, Na exchange, pillaring, drying and calcination. Two synthesized samples differing only in calcining conditions were prepared. Phase composition and textural properties of the starting clay and synthesized pillared clays were characterized using X-ray diffraction and physisorp...
متن کاملThermal Emission of Alkali Metal Ions from Al30-Pillared Montmorillonite Studied by Mass Spectrometric Method
The thermal emission of alkali metal ions from Al30-pillared montmorillonite in comparison with its natural form was studied by mass spectrometry in the temperature range 770-930 K. The measurements were carried out on a magnetic mass spectrometer MI-1201. For natural montmorillonite, the densities of the emission currents (j) decrease in the mass spectrum in the following sequence (T = 805 K, ...
متن کاملStrontium adsorption properties of an aluminum-pillared montmorillonite carrying carboxylate functional groups.
Strontium adsorption was studied in an aluminum-pillared montmorillonite (PILC) carrying organic acid groups. The in situ dissociation of these groups increases the number of negative sites in the modified PILC, promoting thus the uptake of cations from an exchange solution. To investigate the role of solution pH and acid strength in cation uptake phenomena, base titrations were performed for P...
متن کاملHydrothermal Synthesis and Characterization of Ni-Al Montmorillonite-Like Phyllosilicates
This work describes the first hydrothermal synthesis in fluoride medium of Ni-Al montmorillonite-like phyllosilicates, in which the only metallic elements in the octahedral sheet are Ni and Al. X-ray diffraction, chemical analysis, thermogravimetric and differential thermal analysis, scanning electron microscopy and transmission electron microscopy confirm that the synthesized samples are montm...
متن کاملControlled step-wise isomerization of the Keggin-type Al(13) and determination of the γ-Al(13) structure.
Partial hydrolysis of AlCl3 with Ca(OH)2 and the amino acid glycine enables the selective transformation of the Al13 Keggin structures, outlining the ε → δ → γ isomerization process. Through this, a new γ-Al13 Keggin structure was able to be isolated and characterized through (27)Al NMR and single-crystal XRD.
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ژورنال
عنوان ژورنال: Microporous and Mesoporous Materials
سال: 2017
ISSN: 1387-1811
DOI: 10.1016/j.micromeso.2017.01.039