FIELD: chemistry.
SUBSTANCE: invention relates to a method for simultaneous production of aromatic hydrocarbons and divinyl via catalytic conversion of bioethanol flowing on a zeolite-containing catalyst HZSM-5 at temperature of 390-420°C, volume rate of the liquid hydrocarbon of 2-4 h-1. The method is characterised by that in order to increase output of divinyl in the contact gas, a layer of a K2O-ZnO/γ-Al2O3 catalyst is placed over the layer of the HZSM-5 catalyst with weight ratio of the layers of (0.5-1):1 and the following content of components of the top layer: K2O - 0.1-0.25%, ZnO - 22-24%, γ-Al2O3 - the balance. The process is carried out in the presence of a hydrogen peroxide initiator, taken in amount of 1 wt % in the starting bioethanol.
EFFECT: method increases selectivity of the process of converting bioethanol and particularly enables to simultaneously obtain high content of divinyl in the gaseous phase and aromatic hydrocarbons in the liquid phase.
2 cl, 4 ex
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Authors
Dates
2014-03-20—Published
2012-12-27—Filed