Authors: I.Y. Petrov, B.G. Tryasunov

Title of the article: Role of regeneration conditions of Na₂O-Cr₂O₃-MoO₃/γ-Al₂O₃ catalyst in the process of isoamylenes dehydrogenation to isoprene

Year: 2015, Issue: 2, Pages: 83-87

Branch of knowledge: Chemical technology

Index UDK: 542.97+542.973.8

DOI: -

Abstract: Effect of regeneration conditions on the stability of Na₂O-Cr2O₃-MoO₃/γ-Al₂O₃ catalyst work during its cyclic dehydrogenation/regeneration treatment in the dehydrogenation of isoamylenes to isoprene has been studied. It has been shown that in the course of conventional oxidative regeneration of the above catalyst with steam-air mixture at T = 600-620°C, it was subjected to intensive sintering accompanied by its deactivation and lowering MoO₃ content. Conducting oxidative regeneration at T ~ 580°C in a flow of dry air (~ 560 h^-1) provides the stable and efficient work of the given catalyst for at least 50 cycles of its exploitation.

Key words: dehydrogenation of isoamylenes regeneration Na₂O-Cr₂O>sub>3-MoO₃/°-Al₂O₃ catalyst phase composition porous structure

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