Journal
CATALYSIS COMMUNICATIONS
Volume 97, Issue -, Pages 37-41Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2017.04.016
Keywords
Propane; Oxidative dehydrogenation; alpha-Chromia-alumina; Deactivation; Chromia catalyst
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Funding
- Korea Research Institute of Chemical Technology (KRICT) [0458-20160024]
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A series of thermally deactivated CrOy/Al2O3-ZrO2 catalysts with different Zr/Al molar ratio (denoted as Cr/AZX, X = Zr/Al molar ratio) were prepared for use in the dehydrogenation of propane to propylene by lattice oxygen of the catalysts. It was found that alpha-chromia-alumina phase was formed as a result of catalyst deactivation. The relative distribution of chromium species was different depending on Zr/Al molar ratio of the catalysts. Among the catalysts, Cr/AZ-0.07 catalyst with the lowest amount of a-chromia-alumina and the largest amount of active chromium species (Cr3+) showed the best catalytic activity in the dehydrogenation of propane to propylene.
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