Other

Mikhail L Dvoretsky

Anatoly I Lukashov

Boris S Korotkevich

Jury A Shmuk

Roman I Polataiko

Lidia P Shapovalova

Dzantemir N Tmenov

Gavril I Vasiliev

Albert V Tabakov

Valery P Lukyanenko

Valentina D Kandalova

Gennady P Zhestovsky

Evgeny A Malov

Nikolai I Svintsov

A process for producing unsaturated hydrocarbons which comprises contacting a paraffin, monoolefin and/or alkylaromatic compounds with a catalyst at a temperature within the range of from 400.degree. to 700.degree. C. in the presence of an inert gas and/or steam. The catalyst comprises a carrier having deposited thereonto an oxide of molybdenum in an amount of from 5 to 35% by weight of the catalyst. As the carrier, use is made of a granulated porous crystalline silica modified with magnesia in an amount of from 1 to 20% by weight of the carrier; a granulated magnesium-titanium carrier consisting of 50 to 95% by weight of MgO and 50 to 5% by weight of TiO.sub.2, or a granulated magnesium-aluminum carrier consisting of 70 to 95% by weight of MgO and 5 to 30% by weight of Al.sub.2 O.sub.3. Through the spent catalyst an oxygen-containing gas is passed at a temperature within the range of from 400.degree. to 700.degree. until catalytic activity is restored to the catalyst. The process, according to the present invention, ensures a high selectivity; substantially simplifies temperature control in the reaction zone; avoids the possibility of forming of a hazardous mixture of hydrocarbons with oxygen; and simplifies purification of waste waters.

Process for producing unsaturated hydrocarbons

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Kyiv, Ukraine

Mikhail L Dvoretsky