アセタールの気相脱アルコール反応(第2報) : 硫酸力ルシウ厶触媒によるアセタールの接触分解について

概要

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Catalytic dealcoholation of acetaldehyde diethylacetal over calcium sulfate catalyst has been studied in a flow system. Data for the conversion of acetal versus W/F curves were obtained at three temperatures, 174, 188, and 200°C. It seems reasonable to assume that the reaction is reversible. Equilibrium constants, Kp, were determined and the following equation derived. log Kp=-3.84×103/T+8.243 A rate equation was established and the apparent activation energy was calculated to be 21 Kcal/mol. Effects of ethyl vinyl ether, ethanol, and water added to the acetal were also examined.
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