Add time:07/21/2019         Source:sciencedirect.com

The aminolysis of ethyl acetate was promoted significantly via continuous reaction in a tubular reactor. N-propylacetamide was thus synthesized without presence of solvent and catalyst. The optimum conditions were obtained as follows: the reaction temperature is 218 °C, the reaction pressure is 3.5 MPa, the molar ratio (ethyl acetate: N-propylamine) is 1:1, and the residence time is 350 min. Accordingly, the conversion of ethyl acetate is up to 94.8%. Furthermore, the kinetics of the rapid reaction stage (when the conversion of ethyl acetate is 20-80%) can be expressed as lnk=−4629.441T+2.1366, and the apparent activation energy is Ea = 38489 J·mol-1.

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