CATALYTIC PROPERTIES OF MODIFIED IRON-CHROMIUM-POTASSIUM SYSTEMS IN THE THERMOCATALYTIC DEHYDROGENATION OF ETHYLBENZENE

Abstract

The comparison of the efficiency of iron oxide catalytic systems modified with additions of cerium and zirconium oxides in the dehydrogenation of ethylbenzene to styrene was considered. According to the yield of the desired product (styrene), cerium- and zirconium-containing contacts exceed the unmodified Fe-K-Cr-O catalyst. Styrene is obtained about the yield of 79 % at 630 °C, ethylbenzene load of 150 g per liter of catalyst per hour and a molar ratio of water:ethylbenzene = 17,4.

References

[1] Overview of the CIS styrene market / Association of independent consultants and experts in the field of mineral resources, metallurgy and chemical industry. М., 2006. 81 p.
[2] Marketing research: Styrene market. Current situation and forecast 2018-2022, may 2018. 171 p.
[3] Kotelnikov G.R., Kachalov D.V. Production and operation of catalysts of petrochemical industry. Issue state and problems // Kinetics and catalysis. 2001. Vol. 42, N 5. P. 790-798.
[4] Newman R. Styrene catalyst developments // Hydrocarbon Engineering. 2004. Vol. 9, N 11. P. 47, 48, 50.
[5] Kachalov D.V. Interrelation of phase composition and physical and chemical properties of ferritic systems catalytically active in dehydrogenation reactions. / Author's abstract of a candidate dissertation in technical sciences // Ivanovo, 2009, 16 p. (Russian). http://main.isuct.ru/files/publ/diss/2702092.doc.
[6] Dementieva E.V. The way of regulation of ferritic phases in an iron-oxide catalyst of dehydrogenation in conditions of industrial synthesis / Author's abstract of a candidate dissertation in technical sciences. Kazan, 2009. 20 p. (in Rus.).
[7] Bugrova T.A., Mamontov G.V. Influence of ZrO2 and CeO2 additives on the state of the active component and activity of CrOx/Al2O3 catalysts in the dehydrogenation of isobutane. Collection of abstracts III Russian Congress on catalysis "Roskataliz". Novosibirsk, 2017. P. 284-285.
[8] Emekeyev A.A., Akhmerov O.I., Fedorov G.I., Kharlampidi Kh.E. Some aspects of choosing the compounds of iron-oxide catalytic systems for the dehydrogenation of hydrocarbons // Bulletin of Kazan Technological University. 2008. N 2. P. 61-63.