Divinyl (1,3-butadiene) is a key semi-product in the production of synthetic rubbers and ABS plastics.

The traditional industrial method for obtaining butadiene in the petrochemical industry is dehydrogenation of butane on chromia-alumina catalysts.

ZAVKOM, together with its partners, has developed a technology for the synthesis of divinyl from ethanol. A catalyst was developed specially for this technology with the optimum conditions for the process, significantly optimising the costs, as more than 95% of the butadiene is obtained as a bi-product of ethylene synthesis. The reorientation toward a lighter raw material during ethylene synthesis causes a drop in the quantity of the butadiene produced. At the same time, butadiene rubbers still maintain stable demand, as a result of which there is a deficit of butadiene on the market, and new ways of obtaining it need to be sought.

Advantages of the proposed technology:

  • The developed catalyst helps to achieve a selectivity of 82% in terms of the target product, butadiene (the closest equivalent is the Lebedev process, which gives a selectivity of under 60%)
  • Using the new polyfunctional catalyst, the entire process is conducted in a single stage
  • The process is performed at a fairly low temperature, thus considerably reducing energy costs compared with the nearest equivalents
  • The proposed technology uses a renewable raw material instead of a petrochemical one, which reduces the consumer's dependence on the oil price.



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