The immobilization of copper (II) acetylacetonate complex onto solid supports and their characterization

In accordance with the green chemistry principles, the immobilization of transition metal complexes with catalytic properties onto solid matrixes or organic polymers is an important research subject that has received much attention in recent years.Clay minerals occur abundantly in nature and their high surface area, sorptive and ion-exchange properties have been exploited for catalytic applications through decades. Clays, in general, are important and useful low-cost materials with a wide range of applications, namely in industry, engineering, agriculture, pharmaceuticals, absorbents, surface coatings, and ceramics, and for environment purposes.Bentonite is a 2:1 sheet rock with one octahedral and two silica sheets, which form a layer. Layers are held together by van der Waals forces. It is used as industrial raw materials in many applications. The major uses are iron pelletizing, pet adsorbents, drilling fluids, bleaching of edible oils, applications in civil engineering and the foundry industry. Because of these properties of Bentonite for the removal of heavy metal waste is the most promising type of clay is considered. On the other hand, Siral compounds are synthetic silica-aluminas while Bentonite is a natural product. Siral 80 composed of about the same percentages of silica and alumina as in Bentonite which can be both used as catalysts themselves and also support materials in the area of heterogeneous catalysis.In this study, natural Bentonite from Enez/Edirne as a clay and Siral 80 were used as solid supports for the immobilization. The basic difference between these materials is former natural material; latter is synthetic silica-alumina. As active components, copper (II) acetyl acetonate was used in the preparation procedure. Two types of method were applied in the preparation of heterogeneous catalysts.The prepared catalysts samples were characterized with several methods, such as X-Ray Fluorescence (XRF), Thermogravimetric Analyses (TGA/DTG), X-Ray Powder Diffraction (XRD), Scanning Electron Microscope (SEM), Atomic Absorption Spectroscopic (AAS), Fourier Transform Infrared (FTIR) and Specific Surface Area Determination (BET) were also be determined.