کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1694255 1519064 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural, textural and acidic properties of Cu-, Fe- and Cr-doped Ti-pillared montmorillonites
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Structural, textural and acidic properties of Cu-, Fe- and Cr-doped Ti-pillared montmorillonites
چکیده انگلیسی


• 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.

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 118, December 2015, Pages 124–130
نویسندگان
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