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This study investigates the effect of surface acidity and basicity of aluminas on asphaltene adsorption followed by air oxidation. Equilibrium batch adsorption experiments were conducted at 25°C with solutions of asphaltenes in toluene at concentrations ranging from 100 to 3000g/L using three conventional alumina adsorbents with different surface acidity. Data were found to better fit to the Freundlich...
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