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Ramiz G Rizaev

Viktor Efimovich Sheinin

Jury N Litvishkov

Mirabdulla Mirakhmed Mirataev

Zemfira Jusif Magerramova

Soltan Dzhafarovich Mekhtiev

Vagab S Aliev

Lidia P Pilaeva

Murshud Sary Rafiev

Rashid M Talyshinsky

Geibat Nagmetovich Suleimanov

Tofik S Farzullaev

Nazaket M Ilyasova

Veli S Gadzhi-Kasumov

Fikret Dzhabrail Guseinov

Zhalya M Seifullaeva

Idris Aslan Guseinov

Sekher G Gusein-Zade

Roida Jusuf Magerramova

Khalida Y Kulieva

Medzhid R Efendiev

Adilya Shir Novruzova

Beniamin G Ter-Sarkisov

The present invention relates to methods for preparing aromatic nitriles and, more specifically, to a method for preparing phthalonitriles. The present method for preparing phthalonitriles resides in subjecting xylene to oxidative ammonolysis at a temperature of 340.degree. to 480.degree. C. in the presence of a catalyst having the following composition (in weight percent):

Method for preparing phthalonitriles

The process for preparing butadiene (divinyl) according to the present invention comprises dehydrogenation of n-butane or a mixture thereof with n-butene at a temperature ranging from 550.degree. to 650.degree. C. in the presence of oxygen, an inert diluent and a catalyst having the following composition, percent by weight:

Process for preparing butadiene (divinyl)

According to the invention, a method of producing orthoaminobenzonitrile is provided according to which ortho-toluidine is reacted with ammonia at a temperature of 360.degree.-460.degree. C. in the presence of oxygen, or a mixture thereof with inert gases, and a catalyst, namely, a mixture of oxides of antimony, bismuth, vanadium, and phosphorus taken in a weight ratio 5-12:3-9:1-9:0.5-4, respectively, the catalyst being applied to a support. The invention ensures an increase in the yield of orthoaminobenzonitrile per unit volume of the catalyst and selectivity with respect to the final product.

Method of producing ortho-aminobenzonitrile

A process for producing benzonitrile which comprises reacting toluene with ammonia in the presence of oxygen or a mixture thereof with inert gases and a catalyst; as the latter use is made of a mixture of oxides of vanadium, chromium, antimony and bismuth taken in a molar ratio of 1-10:1-20:1-10: 1-15 respectively deposited onto a carrier. The process is effected at a temperature within the range of from 340.degree. to 480.degree. C, followed by isolation of the desired product. The present invention makes it possible to substantially increase the output of benzonitrile from one liter of the catalyst per hour due to an increased capacity and selectivity of the catalyst.

Process for producing benzonitrile

A process for producing phthalonitrile, which comprises reacting o-xylene with ammonia in the presence of oxygen or a mixture thereof with inert gases and a catalyst; as the latter use is made of a mixture of oxides of bismuth, antimony, molybdenum and chromium taken in a molar ratio of 1-15:1-10:0.5-5:0.5-20 respectively or a mixture of oxides of bismuth, antimony, molybdenum and vanadium taken in a molar ratio of 1-20:1-10:0.1-15:1-20 respectively deposited onto a support.

Process for producing phthalonitrile

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Baku, undefined

Ramiz G Rizaev