Spectroscopic and thermal studies of bentonites from Unye, Turkey

SAKIZCI M., ERDOĞAN ALVER B., ALVER Ö., YÖRÜKOĞULLARI E.

JOURNAL OF MOLECULAR STRUCTURE, cilt.969, sa.1-3, ss.187-191, 2010 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 969 Sayı: 1-3
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.molstruc.2010.02.008
  • Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.187-191
  • Anahtar Kelimeler: Bentonite, FT-IR, MAS NMR, Thermal analysis, XRD, XRF, SOCIETY SOURCE CLAYS, THERMODYNAMIC ANALYSIS, WATER-VAPOR, BASE-LINE, MONTMORILLONITE, IMMERSION, CRISTOBALITE, SURFACE, ADSORPTION, MINERALS
  • Anadolu Üniversitesi Adresli: Evet

Özet

Three bentonites from Turkey were investigated by X-ray diffraction (XRD), X-ray fluorescence (XRF), differential thermal analysis (DTA), thermogravimetric analysis (TG), Fourier transform infrared (FT-IR), magic angle spinning nuclear magnetic resonance (MAS NMR) and surface area measurement techniques. The XRD patterns showed that all three bentonite samples (B1, B2 and B3) were mainly composed of montmorillonite accompanied by cristobalite. In addition, albite appears in B3 sample studied. The heats of immersion of the bentonite samples (B1, B2 and B3) measured with a Calvet calorimeter at 30 degrees C in water were determined as -75.70, -54.69 and -68.22 J/g, respectively. (C) 2010 Elsevier B.V. All rights reserved.