Power-Efficient Synthesis of Isoprene via Two-Stage Dehydrogenation of Isopentane

Submitted: Jul 11, 2013; Accepted: Aug 9, 2013; Published: Aug 25, 2013 Abstract: The method of power-efficient two-stage dehydrogenation of isopentane to isoprene considered in this study comprises the production of a mixture of isoamylene at the first stage, further dehydrogenation of which occurs with a smaller endothermal effect. The effectiveness of the proposed method for energy saving is calculated. This result is achieved by using chrome-alumina catalyst, which makes it possible to increase the fraction of -isoamylene in the mixture of isoamylenes. This catalyst is prepared using superhigh-frequency microwave energy. Microwaves were used at the stages of affixing active components to an alumina support and catalyst drying. The main features of the process occurring on the resulting catalyst are shown.