A Study on the Relationship Between Low-Temperature Reducibility and Catalytic Performance of Single-Crystalline La_(0.6)Sr_(0.4)MnO_(3+δ) Microcubes for Toluene Combustion

摘要

Single-crystalline La_(0.6)Sr0.4Mn0~(3+)5 micro-cubes of cubic perovskite phase were prepared hydrother-mally. The adopted temperature and time of hydrothermal treatment and the amount of KOH used had great effects on the low-temperature reducibility of La_(0.6)Sr_(0.4)MnO_(3+δ). The initial H2 consumption rate of La_(0.6)Sr_(0.4)MnO_(3+δ) played a vital role in determining its catalytic activity for toluene combustion. It is concluded that the perovskite-type oxide catalyst with a higher initial H2 consumption rate displayed a higher catalytic activity for the addressed reaction.