Reaction kinetics of the esterification reaction between ethanol and acetic acid catalyzed by Keggin heteropolyacids
作者： Xiufeng Lu , Hengbo Yin , Lingqin Shen , Yonghai Feng , Aili Wang
DOI: 10.1007/S11144-013-0641-7
关键词:
摘要: Heteropolyacids (HPAs), such as silicotungstic (HSiW), phosphotungstic (HPW), and phosphomolybdic (HPMo) acids, effectively catalyzed the esterification reaction between ethanol acetic acid. The catalytic activities of HPAs were in an order HSiW > HPW > HPMo. conversion was more than 85 % when HSiW catalyst recycled for 10 times with a low mole ratio to 4.5 × 10−4:1 at 358 K. A second reversible kinetic model fitted experimental data well. forward activation energies 36.8, 32.6, 31.6 kJ mol−1 HSiW, HPW, HPMo used catalysts 323–358 K.
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