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- W2604936802 abstract "Intensified production of carboxylic acid esters has been investigated using a mesoscale oscillatory baffled reactor (meso-OBR), operated in continuous multi-steady states, dynamic and multi-dimensional modes. This study was performed to investigate the suitability of the reactor for solid-liquid reactions, capacity for quality steady states and rapid process development. A heterogeneously catalysed hexanoic acid esterification with methanol was studied in a meso-OBR packed with Amberlyst™ 70 resin as an acid catalyst. The esterification conditions investigated were feed molar ratios in the range of 1.5:1–30:1 and residence times in the range of 1 min–20 min. The meso-OBR was operated at oscillatory conditions of 4.5 Hz frequency and 8 mm amplitude (centre-to-peak) and reaction temperature of 60 °C. Clear steady states were achieved at all the residence times used, with maximum hexanoic acid to methyl hexanoate conversion of 95.4 ± 1.0% obtained at 20 min residence time and 30:1 methanol to acid molar ratio. Methyl ester conversions were 98.5 ± 1.5% at 20 min residence time and 30:1 methanol to acid molar ratio for dynamic screening, and 98.2 ± 1.1% at 14 min residence time and 21:1 methanol to acid molar ratio for the multi-dimensional mode. Use of dynamic screening required 16% less time and reactant compared to the multi-steady states approach. A more significant reduction in the process development time and reactants requirement, approximately 30% compared to the multi-steady states approach, was achieved using the multi-dimensional approach. This demonstrates a substantial reduction in process development time, another major advantage of the meso-OBR platform as the choice reactor in process development for multiphase reactions. The Amberlyst™ 70 entirely regained its catalytic activity after water spiking, and was not permanently deactivated by water." @default.
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- W2604936802 date "2017-08-01" @default.
- W2604936802 modified "2023-09-26" @default.
- W2604936802 title "Intensification of carboxylic acid esterification using a solid catalyst in a mesoscale oscillatory baffled reactor platform" @default.
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- W2604936802 doi "https://doi.org/10.1016/j.cej.2017.04.038" @default.
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