【摘要】 采用爆炸法(FlashCombustionMethod)制备了钙钛矿型LaMnO3.00复合氧化物催化剂。利用XRD,TEM,FT IR,BET比表面测试等表征手段,考察了制备条件对复合氧化物微粒的形成、结构和表面积的影响。结果表明:用于发生爆炸反应的尿素含量及溶液pH值对反应影响很大,离子浓度对反应影响较小。更多还原

【Abstract】 The perovskite oxide LaMnO_3.00 was prepared by the combustion of mixtures of the respective metal nitrates and urea at 500 ℃. The catalyst was characterized by XRD, TEM, FT-IR and BET. The effect of experimental conditions on the formation, structure and surface area of the complex oxide particles was also investigated. The results show that the combustion process depends on the urea content and PH value of the solution.更多还原