Farklı Alüminyum Kaynaklarından Co-Al İçerikli Metal Oksitlerin Üretimi ve Yapısal Özelliklerine Etkisinin İncelenmesi

Abstract

Bu araştırma çalışmasında, farklı alüminyum kaynakları kullanılarak emdirme yöntemi ile spinel yapıda kobalt (Co) ve alüminyum (Al)  içerikli metal oksitlerin üretimi gerçekleştirilmiştir. Boehmit (Al(OH)₃) ve korundum (α-Al2O₃) olmak üzere iki farklı Al kaynaklarına kobalt(II)klorürün (CoCl₂·6H₂O) ıslak emdirmesi ile elde edilen örneklerin termal analizleri (DTA/TG) gerçekleştirilerek Al kaynağının Co-Al oksit sıcaklığına olan etkisi belirlenmiştir. Termogravimetrik analiz sonucunda belirlenen üç farklı sıcaklıkta örnekler ısıl işleme tabi tutularak kristal, yüzey ve morfolojik yapıda meydana gelen değişimler incelenmiştir. Yapısal analizler sonucunda, kullanılan Al kaynağının ve ısıl işlem sıcaklığının Co-Al oksit üretiminde önemli etkiye sahip olduğu görülmüştür. Deneysel çalışmalar sonucunda tek fazlı spinel yapıdaki CoAlO₄ üretimi için Al kaynağı olarak boehmit (Al(OH)₃) kullanılması ve emdirme yöntemi sonrasında ısıl işlem sıcaklığının 500 °C seçilmesi önerilmektedir. 

Keywords

• Kobalt,Alüminyum,Metal oksit,Üretim

The Syntesis of Co-Al Based Metal Oxides From Different Aluminum Sources and Their Effect on The Structural Properties

Abstract

In this research study, cobalt (Co) and aluminum (Al) -based metal oxides were produced in the spinel structure by impregnation technique by using different Al sources. The samples were synthesized by wet impregnation of cobalt (II) chloride (CoCl₂·6H₂O) on two different Al sources as boehmit (Al (OH)₃) and corundum (α-Al₂O₃), Thermal analyses (DTA/TG) of the samples were used for understanding the effect on oxide temperature was determined. As a result of the thermogravimetric analysis, the samples were subjected to heat treatment at three different temperatures and the changes in crystal, surface and morphological structure were investigated. As a result of the structural analysis, it has been found that the Al source and the heat treatment temperature have a significant effect on the production of Co-Al oxide. As a result of experimental studies, it is suggested that boehmit (Al(OH)₃) is used as Al source for CoAlO₄ production in monophasic spinel structure and heat treatment temperature 500 °C is chosen after impregnation method.

Keywords

• Cobalt,aluminum,metal oxide,synthesis

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