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

PP-IV-22INFLUENCE OF COMPOSITION OF THE SECONDARY CARRIER ONTHE BASE OF TRANSITION METALS SUPPORTED ON A BLOCKMETAL SCELETON IN REACTION OF OXIDATION OF METHANEK. Dossumov, Sh.A. GilmundinovD.V. Sokolsky Institute of Organic Catalysis and Electrochemistry, 142, D.Kunaev str.,Almaty, 050010, Kazakhstan. Fax: +7(727)2915722, E-mail: tungatarova58@mail.ruNow natural gas basically is used in the power and household purposes. A level of chemicalprocessing of natural gas into industrial useful products is very low. Numerous researches onprocessing of natural gas represent scientific and practical interest as allow receiving valuablechemical compounds. Despite of huge opportunities in conversion of methane researchers andmanufacturers show interest to the following processes: direct catalytic oxidation of methaneinto oxygen-containing products such as formaldehyde, methanol, acetic acid, formic acid,synthesis gas, catalytic dimerization of methane to ethylene.Synthesis gas is initial raw material for production of many chemical and petrochemicalproducts. It is used in metallurgy for reduction of metals. Natural gas is the main raw materialfor production of synthesis gas. Steam conversion of natural gas is carried out at hightemperature (900 °C). It is power consuming process. Steam conversion of natural gas is themain method for obtaining of synthesis gas. It is more advisable production of synthesis gasby direct oxidation of methane by oxygen of air at 500-700 °C and atmospheric pressure.We carried out investigation on influence of the composition of secondary carrier onpartial oxidation of methane by oxygen of air on such carriers as Cr 2 O 3 , NiO 2 , V 2 O 5 , Al 2 O 3 ,W 2 O 3 . Copper and nickel oxides were used as active components of catalysts. Preparationmethod of catalyst includes the following sages: supporting of secondary carrier on a metalskeleton block, calcination of carrier, impregnation of a surface of secondary carrier by thesalts of nickel and copper with subsequent drying and calcination of catalysts. Theinvestigations were carried out at 500-700°C and space velocity 2000h –1 . Reaction productswere determined by chromatographically on fluoroplastic column filled by Polysorb-1processed by apiezone.It was detected the influence of the composition of secondary carrier on direction ofcatalytic reaction. Such formaldehyde, methanol, and water were formed on the alumina,vanadium and tungsten oxides. Catalytic surface is covered by carbon and activity of catalystis sharply decreased after short time. Carbon acids were determined on the catalysts withsecondary carrier on the base of titanium oxide at 600 °C with 100% selectivity. Carbon wasnot found on the surface of catalyst during long time exploitation due to influence of thecomposition of secondary carrier.The work was supported by ISTC grant K-1266.436