Document Type : Research Paper
Author
Dep. of Biochemical Engineering University of Baghdad
Abstract
Abstract The active gamma alumina oxide catalyst was prepared by using the precipitation of mixing of aluminum nitrate and aqueous ammonia . The effect of calcinations temperature of aluminum hydroxide on the crystallography of the alumina oxide products were studied by means the thermal analysis and the X - Ray diffraction technique . The calcinations temperature were ( 300 , 500 , 600 , 650 , 700 , 800 , 900 , and 1000 ) " C. Also the surface area , pore volume , and mean pore radius were measured for all alumina oxide products . The activity of these alumina oxides for dehydration of ethanol was studied and comparable to that of commercial alumina oxide . The reaction was carried out in a tubular reactor under atmospheric pressure and 350 ° C.While the reaction products were analyzed by gas chromatography technique . The results show that the calcination temperature of 600-650 ° C gives the active crystal phase of gamma alumina oxide which is exhibit comparable dehydration activity to the commercial catalyst .
Keywords
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