Al-, Cr-SÜTUNLU KİLLERİN VE Cr-YERLEŞTİRİLMİŞ Al- SÜTUNLU KİLLERİN GÖZENEK YAPILARININ DFT VE DR ANALİZLERİ İLE KARAKTERİZASYONU

Öz

Al-sütunlu kil (Al-SK), krom-alüminyum karışık sütunlu killer (CrAl033-SK, CrAl1-SK) ve Cr-sütunlu kil (Cr-SK) Türkiye’nin Hançılı bölgesinden alınan bentonit örneği kullanılarak sentezlenmiştir. Metal yerleştirilmişsütunlu kil örneklerinin sıvı azot sıcaklığında N2 adsorpsiyon/desorpsiyon izotermleri elde edilmiş ve izotermverileri kullanılarak gözenek yapıları Yoğunluk Fonksiyonel Teori (Density Functional Theory DFT) veDubinin-Radushkevich (DR) metodları ile belirlenmiştir. DFT modelinin metal yerleştirilmiş sütunlu kilörneklerinin deneysel verisiyle uyumlu olduğu gözlenmiştir. En yüksek DFT ve DR mikrogözenek hacimdeğerleri 573 K de kalsine edilmiş CrAl033-SK örneği için 0,080 cm3g-1 ve 0,138 cm3g-1 olarak elde edilmiştir. DRmetot ile elde edilen mikrogözenek hacim değerlerinin SF metodla belirlenmiş mikrogözenek hacim değerleri ileuyumlu olduğu görülmüştür.

Anahtar Kelimeler

• Cr yerleştirilmiş Al-sütunlu kil, gözenek yapısı, DFT metot, DR metot.

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