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纳米Ce_(0.9)Cu_(0.1)O_(2-δ)固溶体的制备、表征和CO低温氧化性能 被引量:3
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作者 宋宇鹏 王向宇 +2 位作者 何军 郑央 罗孟飞 《工业催化》 CAS 2007年第1期55-58,共4页
采用改进的柠檬酸溶胶-凝胶法(即前驱体先在N2气氛下高温预处理)制备了高比表面积纳米Ce0.9Cu0.1O2-δ固溶体。采用XRD、TEM和Raman等对催化剂进行表征,并考察了它们的低温CO氧化性能。研究结果表明,改进的柠檬酸溶胶-凝胶法可以制得晶... 采用改进的柠檬酸溶胶-凝胶法(即前驱体先在N2气氛下高温预处理)制备了高比表面积纳米Ce0.9Cu0.1O2-δ固溶体。采用XRD、TEM和Raman等对催化剂进行表征,并考察了它们的低温CO氧化性能。研究结果表明,改进的柠檬酸溶胶-凝胶法可以制得晶相比较完整的Ce0.9Cu0.1O2-δ固溶体,晶粒小于10 nm,明显小于常规方法制得的样品。随着样品焙烧温度的提高,表征氧缺位的600 cm-1左右Raman峰的位置向高波数方向迁移。采用改进方法制得的Ce0.9Cu0.1O2-δ固溶体具有更高的CO氧化活性,其原因归结为晶粒的减小,容易形成氧缺位和表面高分散CuO的增加,从而促进了CO的氧化。 展开更多
关键词 改进的溶胶-凝胶法 纳米ce0.9cu0.1o2—δ固溶体 低温Co氧化活性
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Preparation and characterizations of Ce-Cu-O monolithic catalysts for ethyl acetate catalytic combustion 被引量:4
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作者 马瑞红 苏孝文 +2 位作者 金凌云 鲁继青 罗孟飞 《Journal of Rare Earths》 SCIE EI CAS CSCD 2010年第3期383-386,共4页
Ce-Cu-O monolithic catalysts were prepared by using Ce0.9Cu0.1O1.9 solid solution or nitrate as precursors,and their catalytic performance for the combustion of ethyl acetate were studied.The catalysts calcined at a l... Ce-Cu-O monolithic catalysts were prepared by using Ce0.9Cu0.1O1.9 solid solution or nitrate as precursors,and their catalytic performance for the combustion of ethyl acetate were studied.The catalysts calcined at a low temperature showed high catalytic activities.When calcined at high temperatures,the catalyst with Ce0.9Cu0.1O1.9 solid solution as precursor remained a high activity,while the catalyst with metal nitrates as precursors exhibited a suppressed reactivity.Therefore,the catalyst prepared with th... 展开更多
关键词 ce0.9cu0.1o1.9 solid solution monolithic catalysts catalytic combustion ethyl acetate
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