THE INVESTIGATION OF THE EFFECT OF GRAIN SIZE ON RAMAN AND 29Si MAS NMR SPECTRA OF BENTONITES FROM TURKEY

Abstract

There is a great deal of interest in clays in various fields of science and industry. In the literature, it can be easily seen that, vibrational spectroscopic particularly FT-IR and NMR methods have been widely employed for the scientific studies of clays. However, especially not much data is available for Raman spectrum since it is difficult to obtain a good and interpretable spectrum. Most of the time, particle size or grain size is not considered as an element which can affect the quality of the Raman and NMR spectra. In this paper, we prepared clay samples having different grain sizes obtained from Ünye region and we observed the effect on the Raman and ²⁹Si NMR spectral quality.

THE INVESTIGATION OF THE EFFECT OF GRAIN SIZE ON RAMAN AND 29Si MAS NMR SPECTRA OF BENTONITES FROM TURKEY

Abstract

Bilim ve endüstri alanında killere oldukça yoğun bir ilgi vardır. Literatürde; titreşim spektroskopisi ve özellikle FT-IR ve NMR spektroskopik yöntemlerinin, killer üzerine olan bilimsel çalışmalarda sıklıkla kullanıldığı görülmektedir. Buna karşın yorumlanabilir bir spektrum eldesinin güç oluşundan dolayı özellikle Raman spektrumlarına aynı sıklıkta rastlanılmamaktadır. Çoğu zaman, birçok çalışmada parçacık boyutu Raman ve NMR spektrumlarının kalitesine tesir eden bir unsur olarak ele alınmaz. Bu çalışmada Ünye yöresinden elde edilen killer için farklı parçacık boyutlarına sahip numuneler hazırlanmış, Raman ve 29Si NMR spektrumları alınmış ve parçacık boyutunun spektrumlar üzerine tesiri incelenmiştir

Keywords

• Parçacık boyutu, Raman spektrumu, 29Si MAS NMR, Spektral kalite, Band şekli

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