Effect of Cu modifier on the performance of CrOx/Al2O3 catalysts for isobutane dehydrogenation

Salaeva, A.A.; Salaev, M.A.; Mamontov, G. V.

doi:10.1016/j.ces.2019.115462

Cited by 16 publications

(1 citation statement)

References 60 publications

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“…The catalysts for dehydrogenation of paraffins mostly contain CrO x [14][15][16][17][18][19] or Pt-Sn [20][21][22][23] as active components, while many other catalyst formulations, including but not limited to V [24,25], Ga [26], Co [27], Rh [28], Rh-Sn [29], zirconia-supported Rh, Ru, Pt or Ir [30], Pt-Ga [31], Pt-In [32], Pt-Ge [33], Pt-Pd [34], and TiO 2 -supported catalysts with ZnO and ZrO 2 [35] have already shown their potential. Such composites are usually supported on various alumina or silica.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cr/Zr Ratio on Activity of Cr–Zr Oxide Catalysts in Non-Oxidative Propane Dehydrogenation

Zubkov¹,

Bugrova²,

Salaev³

et al. 2021

Crystals

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Two series of chromium–zirconium mixed oxide catalysts with different Cr/Zr molar ratio are prepared by co-precipitation method. Porous structure of the catalysts is studied by low-temperature N2 adsorption–desorption. Phase composition and chromium states in the catalysts are characterized by X-ray diffraction (XRD), UV-visible spectroscopy, and temperature-programmed reduction with hydrogen (TPR-H2). The mixed catalysts are tested in non-oxidative dehydrogenation of propane at 550 °C. The catalysts synthesized without ageing of precipitate show higher activity in propane dehydrogenation due to the higher content of reducible Cr+5/+6 species due to its stabilization on the ZrO2 surface.

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