Performance of Non-stoichiometric Perovskite Catalyst (AxCrO3−δ, A: La, Pr, Nd) for Dehydrogenation of Propane Under Steam Condition

The aim of this study was to clarify the effect of the non-stoichiometry in the A x CrO 3−δ (A: La, Pr, Nd, 0.90 ≤ x ≤ 1.05) perovskite-type oxide on the dehydrogenation performance of propane using steam (DHP-S). The slight change in the molar ratio of the A-site (=La, Pr, Nd) to the B-site cation (=Cr) from the stoichiometric composition (A/B = 1) significantly affected the dehydrogenation performance. For the La-based catalyst, the La x CrO 3−δ catalyst with 0.90 ≤ x ≤ 0.97 displayed a relatively high activity, while the catalyst with 0.97