The acidic H₂O₂ solution employed in the treatment of LaCoO₃ resulted in an improved porosity and the formation of Co₃O₄ nanoparticles highly dispersed on the surface of LaCoO₃. The resulting solid exhibited superior catalytic activity towards propane combustion with T₅₀ as low as 254 °C, high stability with time on stream (up to 48 h) and excellent water tolerance. This catalytic behavior was associated with the increase in the concentration of oxygen vacancies in the formed perovskite solid support.

中文翻译：

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LaCoO _3的酸性H ₂ O ₂处理对高度分散的Co ₃ O ₄纳米粒子具有出色的催化性能，可促进C ₃ H ₈燃烧

用于处理LaCoO ₃的酸性H ₂ O ₂溶液可改善孔隙率，并形成高度分散在LaCoO ₃表面的Co ₃ O ₄纳米颗粒。所得固体在低至254°C的T _50下对丙烷燃烧表现出优异的催化活性，在运行时间（长达48小时）中具有很高的稳定性，并且具有出色的耐水性。这种催化行为与所形成的钙钛矿固体载体中氧空位浓度的增加有关。