Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

PP-I-1conditions of process was high as 65%. This allowed considering such way of acetaldehydeproduction as competitive to commercial one.The main industrial method of acetaldehyde production is ethylene oxidation in thepresence of PdCl 2 and CuCl 2 water solutions. It has a number of drawbacks such as formationof great amounts of toxic chlororganic by-products and waste water. At the same timeacetaldehyde production by ethanol dehydrogenation in the presence of heterogeneouscatalysts has a number of advantages: absence of toxic wastes, soft conditions of the processand formation of hydrogen, which can be used in other processes. Ethyl alcohol the only rawmaterial can be produced from biomass and allows not using petroleum.When ethanol conversion was carried out in the presence of copper-bearing catalyst onthe basis of Ciment Fondu – galumin, developed in Institute of organic chemistry named byN.D. Zelinsky of the Russian Academy of Science and Novomoskovsk institute of nitricindustry, essential increase of ethanol conversion was observed. Therefore this catalyticsystems were stated to reveal higher activity. In this case the basic component of liquidproducts is ethyl acetate formed by reaction of ethanol and acetaldehyde.For ethanol conversion carried out in the presence of copper-bearing catalyst on the basisof silica gel, the main product of ethanol transformation was ethylene formed by ethanoldehydration due to acid properties of a carrier surface.Thus, as a result of the carried out investigations effective copper-bearing catalysts on thebasis of sibunit, galumin and silica gel for bioethanol dehydration process with acetaldehyde,ethyl acetate and ethylene production have been developed.213