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- W1747782783 abstract "Pseudo-boehmite is the best precursor during synthesis of gamma alumina, because only the removal of water by calcination at about 447 °C is required. The control of operating variables during synthesis of pseudo-boehmite: the supersaturation of the solutions is a factor of special importance, additionally the pH, temperature, impurities and nature of the reagents [3], [4]. Ensure purity of this material and these variables determine the morphology, texture and it structures of the precipitate. Therefore, it is relevant to follow phenomena that occur during synthesis, in order to predict yield and quality of the final product. In this work, synthesis of pseudo-boehmite was developed by the method of precipitation, using industrial grade aluminum sulfate supersaturated solution and concentrated ammonium hydroxide (28%) as reactants; this known method was improved decreasing reaction temperature below the boiling point of ammonia. Temperature control of the reactant medium was reached by data acquisition and automatic manipulation of the heating medium. It is shown that operating the reactor at isothermal conditions ensures the final quality of the pseudo-boehmite produced.Download : Download high-res image (235KB)Download : Download full-size image" @default.
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- W1747782783 date "2016-08-01" @default.
- W1747782783 modified "2023-10-18" @default.
- W1747782783 title "Reactions analysis during the synthesis of pseudo-boehmite as precursor of gamma-alumina" @default.
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- W1747782783 doi "https://doi.org/10.1016/j.cattod.2015.07.056" @default.
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