The effect of the presence of gdvo3 and gdvo4 in the conversion of propane

The GdVO3 and GdVO4 catalyst has been prepared via solid-phase synthesis. It has been shown by a complex of physical and chemical methods that or GdVO3, the main one is the phase with the structure of the first homologue of the Roldlesden-Popper series of a rhombical distorted perovskite. Orthovanadate of GdVO4 crystallize in the structural type of zircon. The catalytic properties of GdVO3 and GdVO4 are studied in the propane cracking process to form propylene and ethylene. It was found that GdVO3 and GdVO4 has a high selectivity and catalytic properties. It was shown that propane conversion started at 773 K, was only 2% at 873 K, and raising the temperature to 923 K increased propane conversion to 21%. In the presence of GdVO4 and GdVO3, a considerable increase in propane conversion was observed that reached 60% at 923 K. The structure of the catalyst is stable under the conditions of preferential C3H8 reduction. Deactivation was much faster with GdVO3, and it was observed after 20 h of operation at a rate that was slightly slower than the one for GdVO4. © 2020 Trans Tech Publications Ltd, Switzerland.

Trans Tech Publ, Uetikon-Zuerich, Switzerland
995 MSF
  • 1 RUDN University (Peoples' Friendship University of Russia), Moscow, 117198, Russian Federation
  • 2 Frumkin Institute of Physical Chemistry and Electrochemistry RAS, 31, Leninskiy, prospect, Moscow, 119071, Russian Federation
  • 3 A.V. Topchiev Institute of Petrochemical Synthesis, RAS, 29, Leninskiy prospect, Moscow, 119991, Russian Federation
Ключевые слова
Energy of activation; Ethylene; Propane cracking; Propane dehydrogenation; Propylene; Temperature-programmed reduction; Vanadate; Vanadite
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