Eskişehir Lületaşı Atıklarından Sütunlanmış Kil Üretimi ve Karakterizasyonu

Year 2020, Volume: 24 Issue: 2, 487 - 493, 26.08.2020

Naile Karakehya , Ceyda Bilgiç

https://doi.org/10.19113/sdufenbed.686851

Abstract

Kil mineralleri, pek çok endüstriyel uygulamada çok eski çağlardan beri kullanılan doğal nano-maddelerdir. Bu mineralleri, adsorban veya katalizör olarak daha kullanışlı hale getirmek için uygulanan işlemlerden biri de hidroksi metal katyonlar ile sütunlamadır. Bu işlem ile tabakalı yapıların gözenek boyutu değiştirilebilir. Bu çalışmada iki tür sütunlanmış kil incelenmiştir. Birincisi, Eskişehir lületaşı tesisi atıklarından alfa-sepiyolit kullanılarak üretilen Al-sütunlanmış sepiyolittir. Diğer sütunlanmış kil (Al-sütunlanmış montmorillonit) ise ticari bir üründür. Al-sütunlanmış sepiyolit ve Al-sütunlanmış montmorillonitin bir lineer alkan serisi ile bazı yüzey etkileşimlerini değerlendirmek için sonsuz seyrelme koşullarında ters gaz kromatografisi (TGK) uygulanmıştır. Sütunlanmış killerin çeşitli fiziksel ve kimyasal özellikleri taramalı elektron mikroskopisi (SEM), X-ışını kırınım (XRD) metodu ve Fourier Dönüşümlü Kızılötesi (FT-IR) spektroskopisi yardımıyla değerlendirilmiştir.

Keywords

Sepiyolit, Montmorillonit, Sütunlanmış-kil, Ters gaz kromatografisi, Atık değerlendirme

Preparation and Characterization of Pillared Clay from Eskişehir Meerschaum Wastes

Abstract

Clay minerals are natural nano-materials that have been used in many industrial applications since ancient times. One of the processes applied to make these minerals more useful as adsorbent or catalyst, is pillaring with hydroxy metal cations. Through this process, the pore size of the layered structures can be changed. In this study, two kinds of pillared clays were examined. The first one was Al-pillared sepiolite produced using alpha-sepiolite from Eskişehir meerschaum facility wastes. The other pillared clay (Al-pillared montmorillonite) was a commercial product. Inverse gas chromatography (IGC) at infinite dilution conditions was applied to evaluate the some surface interactions of Al-pillared sepiolite and Al-pillared montmorillonite with a series of linear alkane. Various physical and chemical properties of the pillared-clays have been evaluated with the aid of scanning electron microscopy (SEM), X-ray diffraction (XRD) method and Fourier Transform Infrared (FT-IR) spectroscopy.

Keywords

Sepiolite, Montmorillonite, Pillared-clay, Inverse gas chromatography, Waste utilization

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