Oxidative dehydrogenation of 3-Methyl-2-buten-1-ol in microreactors

Add time:08/28/2019    Source:sciencedirect.com

Silicon–glass microfabricated reactors containing silver catalyst were used for oxidative dehydrogenation of 3-methyl-2-buten-1-ol to the corresponding aldehyde. The reactors were safely operated in a wide range of oxygen concentrations, in a temperature range of 310–464∘C and residence times of 15–50 ms. The effect of reactant concentrations was examined and it was found that high selectivities were obtained at high alcohol and low oxygen concentration. Conversion of 60–70% with high selectivity (∼95%) at alcohol concentrations of 4–7.2 vol% was achieved at oxygen/alcohol ratio of ∼1 and reaction temperature of 400∘C. Conversion increased smoothly with temperature and no ignition was observed. Selectivity deteriorated above 415∘C due to formation of carbon monoxide, carbon dioxide and higher molecular weight by-products.

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