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- W2060351394 abstract "The effect of solvent composition (water, 2-propanol and mixtures of the two) on the three phase, heterogeneously catalysed, two-step hydrogenation of 2-butyne-1,4-diol on Pd/alumina was investigated in a stirred reactor and for the first time, bubble sizes were measured in situ simultaneously with reaction rates. The first step forming the alkene is slow and gas–liquid mass transfer limitation is unlikely whilst the second step to alkane is much faster and may be mass transfer dominated. Overall, reaction rates displayed a complex relationship with solvent composition. The smallest bubbles where observed with 5% v/v 2-propanol in water and under gas–liquid mass transfer limited conditions (energy dissipation rates <4W/kg), the overall reaction closely follows the ratio of mean bubble diameter to hydrogen solubility, both of which are a function of solvent. Overall, the solvent 5% v/v 2-propanol/water gave faster reactions combined with good selectivity compared to the others and is therefore recommended." @default.
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- W2060351394 date "2007-09-01" @default.
- W2060351394 modified "2023-10-16" @default.
- W2060351394 title "Simultaneous measurement of in situ bubble size and reaction rates with a heterogeneous catalytic hydrogenation reaction" @default.
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- W2060351394 doi "https://doi.org/10.1016/j.ces.2007.01.004" @default.
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