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OwnerDzantemir N. Tmenov, Nikolai I. Svintsov +12inventors
InventorsDzantemir N. Tmenov, Nikolai I. Svintsov, Lidia P. Shapovalova, Albert V. Tabakov, Mikhail L. Dvoretsky, Gavril I. Vasiliev, Gennady P. Zhestovsky, Valentina D. Kandalova, Boris S. Korotkevich, Anatoly I. Lukashov, Valery P. Lukyanenko, Roman I. Polataiko, Evgeny A. Malov, Jury A. Shmuk
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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.
A process for producing unsaturated hydrocarbons comprising contacting compounds selected from the group consisting of paraffin, monoolefin and alkylaromatic hydrocarbons at a temperature within the range of from 400.degree. to 700.degree. C. in the presence of an inert component selected from the group consisting of an inert gas and steam, and in the presence of oxygen in an amount up to 0.1 mole per mole of the hydrocarbon feed, with a catalyst consisting essentially of oxides selected from the group consisting of cobalt, nickel, iron and manganese deposited on a carrier in an amount of from 3.7 to 15% by weight of the catalyst;
A process for preparing a catalyst consisting essentially of oxides selected from the group consisting of cobalt, nickel, iron and manganese deposited on a carrier in an amount of from 3.7 to 15% by weight of the catalyst;
Dependencies are inferred from the claim text.