Microreactor technology for synthesis of ethyl methyl oxalate from diethyl oxalate with methanol and its kinectics |
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Authors: | Guojing Ji Jie Ding Qin Zhong |
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Affiliation: | School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, P.R. China |
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Abstract: | This study focused on the performances and kinetics of the transesterification reaction of diethyl oxalate with methanol to prepare ethyl methyl oxalate via microreactor technology. The conversion of 79.8% of diethyl oxalate (DEO) and the selectivity of 65.9% of ethyl methyl oxalate (EMO) was obtained under the following optimized conditions: the mole ratio of methanol to diethyl oxalate was 3.3:1, the temperature was 35°C, the K2CO3 catalyst concentration was 15 mg/mL, and the residence time was 2.30 minutes. In the temperature range of 25°C to 38°C, the simplified dynamic model was found to obtain the reaction order (α = 2.30), frequency factor (k0 = 2.377 × 105), and apparent activation energy (E = 31.86 kJ/mol). The macroscopic dynamic equation was derived from the experimental result of the transesterification reaction of two feedstocks, which can be obtained through a series of calculations. |
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Keywords: | apparent dynamics diethyl oxalate ethyl methyl oxalate microreactor transesterification |
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