利用尿素辅助溶剂热法合成了一系列LaFexMn1-xO3和Lao.9Sro,1MnO3纳米空心球材料,并采用X射线衍射、透射电子显微镜和物理吸附等方法对其晶相、形貌和比表面积进行了表征.在木质素的催化湿式氧化反应(CWAO)中,该催化剂表现出比传统的柠檬酸溶胶-凝胶法制备的钙钛矿材料更高的催化活性.这主要是由于空心球结构所致.当T=120℃,p(O2)=0.2MPa时,CWAO反应1h后木质素转化率超过80%.反应后组分离子溶出量很低,表明由于钙钛矿相结构的存在,催化剂在该反应条件下非常稳定.
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