Inverse Gas Chromatographic Determination of the Surface Properties of ZSM-5 Zeolite

Öz

Zeolites are microporous members of the smectite group and are widely used in industrial applications. The surface, morphological mineralogical and physico-chemical properties of zeolites are studied by different instrumental analysis techniques. The surface functional groups were determined by Fourier transform infrared (FTIR) spectra. The morphology and surface functional groups of the materials have been analyzed with the aid of scanning electron microscopy (SEM) images and X-ray diffraction (XRD). The pore properties including the Brunauer-Emmett-Teller (BET) surface area, pore volume, pore size distribution and average pore diameter of the zeolite was determined by physical adsorption of N₂ at -196 ^○C. Inverse gas chromatography (IGC) was applied to characterize the surface of zeolite.

Anahtar Kelimeler

• ZSM-5 zeolite,surface properties,morphological properties,physico-chemical properties

ZSM-5 Zeolitinin Yüzey Özelliklerinin Ters Gaz Kromatografisiyle Belirlenmesi

Öz

Zeolitler, simektit grubunun mikro gözenekli üyeleridir ve endüstriyel uygulamalarda geniş kullanım alanı bulurlar. Zeolitlerin yüzey, morfolojik, mineralojik ve fizikokimyasal özellikleri farklı aletli analiz teknikleri ile incelenmiştir. Yüzey fonksiyonel grupları Fourier dönüşümlü kızılötesi (FTIR) spektrumları ile belirlenmiştir. Malzemelerin morfolojisi ve yüzey fonksiyonel grupları taramalı elektron mikroskobu (SEM) görüntüleri ve X ışını kırınım desenleri yardımıyla analiz edilmiştir. Zeolitin, Brunauer-Emmett-Teller (BET) yüzey alanı, gözenek hacmi, gözenek büyüklüğü dağılımı ve ortalama gözenek çapı da dâhil gözenek özellikleri, -196 ^○C de N₂ atmosferinde fiziksel adsorpsiyon ile belirlenmiştir. Zeolit yüzeyini karakterize etmek için ters gaz kromatografisi (TGK) uygulanmıştır.

 ZSM-5 zeoliti, Yüzey özellikleri, Morfolojik özellikler, Fizikokimyasal özellikler

Anahtar Kelimeler

• ZSM-5 zeoliti,Yüzey özellikleri

Kaynakça

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