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Structural, textural and acidic properties of Cu-, Fe- and Cr-doped Ti-pillared montmorillonites
Abstract Montmorillonite has been treated with Ti-based solutions, alone or doped with Cu2+, Fe3+ or Cr3+ cations, yielding new intercalated solids, which have been calcined at various temperatures to test the stability of the so-formed pillars. The solids calcined at 500°C were fully characterized by chemical analysis, X-ray diffraction, FT-IR spectroscopy, thermal analyses, nitrogen adsorption and acidity evaluation. The evolution of the specific surface area, porosity and acidic properties is discussed, analysing the effect of pillaring and doping procedures on these properties.
Highlights Ti-PILC montmorillonites doped with Cu2+, Fe3+ or Cr3+ were prepared. Doping elements, although in low content, strongly affected polymerization of Ti. Doped solids were better ordered than undoped pillared montmorillonite. Specific surface area and acidity were larger in the doped solids.
Structural, textural and acidic properties of Cu-, Fe- and Cr-doped Ti-pillared montmorillonites
Abstract Montmorillonite has been treated with Ti-based solutions, alone or doped with Cu2+, Fe3+ or Cr3+ cations, yielding new intercalated solids, which have been calcined at various temperatures to test the stability of the so-formed pillars. The solids calcined at 500°C were fully characterized by chemical analysis, X-ray diffraction, FT-IR spectroscopy, thermal analyses, nitrogen adsorption and acidity evaluation. The evolution of the specific surface area, porosity and acidic properties is discussed, analysing the effect of pillaring and doping procedures on these properties.
Highlights Ti-PILC montmorillonites doped with Cu2+, Fe3+ or Cr3+ were prepared. Doping elements, although in low content, strongly affected polymerization of Ti. Doped solids were better ordered than undoped pillared montmorillonite. Specific surface area and acidity were larger in the doped solids.
Structural, textural and acidic properties of Cu-, Fe- and Cr-doped Ti-pillared montmorillonites
González-Rodríguez, B. (author) / Trujillano, R. (author) / Rives, V. (author) / Vicente, M.A. (author) / Gil, A. (author) / Korili, S.A. (author)
Applied Clay Science ; 118 ; 124-130
2015-09-11
7 pages
Article (Journal)
Electronic Resource
English
Structural, textural and acidic properties of Cu-, Fe- and Cr-doped Ti-pillared montmorillonites
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