Preparation andPreparation and characterization of nano Pt-Pd/Al2O3 catalyst from bauxite ore

Document Type : Research Paper


Department of Chemistry, College of Education for Pure Science, University of Mosul, Mosul, Iraq


The study includes the selection of one of the natural ores (bauxite clays), which is characterized by its high content of various aluminum minerals such as Al(OH)3 gypsumite, bohemite and AlO(OH) disbor as a source to obtain alumina (Al2O3), and using it as a catalyst support material, and then identifying its content of Clay and non-clay minerals, as well as studying its components using various techniques such as X-ray energy dispersion (EDX) technique, X-ray diffraction (XRD) technique, and X-ray fluorescence (XRF) technique. After that, unwanted components that negatively affect the effectiveness of the prepared catalyst, such as carbonates, are estimated and removed. Iron and non-crystalline silica, after which aluminum oxide (alumina) is prepared from the ore through a series of chemical treatments, and then a catalyst consisting of transition elements (platinum and palladium) loaded on alumina is prepared and studied using different techniques, identifying its components, and determining the weight and atomic percentages for each including measuring the energy dispersion of X-rays (EDX) and ensuring its thermal stability by conducting a thermogravimetric analysis (TG) A), differential thermal analysis (DTA), surface area measurement of the prepared catalyst (BET), scanning electron microscopy (SEM), as well as X-ray diffraction (XRD) and X-ray fluorescence (XRF) for the purpose of identifying the percentages of constituent minerals, and then estimating The ratio of these elements in their oxide form