SINGLE-STEP METHOD OF PRODUCING 1,1-DIETHOXYETHANE Russian patent published in 2014 - IPC C07C43/303 C07C41/50 

FIELD: chemistry.

SUBSTANCE: invention relates to a single-step method of producing 1,1-diethoxyethane, which can be used as an aromatising solvent in perfumery and food industry, as an additive to medicinal preparations and an oxygenate additive for motor fuel. The method includes vapour-phase heterogeneous catalytic conversion of ethanol by passing ethanol vapour through a reactor with a heterogeneous solid catalyst. Ethanol is the only starting substance and the process is carried out in two series-connected flow reactors with different catalysts at temperature in the first reactor of 200-250°C and temperature in the second reactor of 10-30°C, wherein the catalyst used in the first reactor is a copper-containing oxide and the catalyst used in the second reactor is an acid catalyst.

EFFECT: method increases output of the end product, reduces the cost of the process and improves safety.

5 cl, 3 tbl, 1 ex