| 非水溶剂溶胶-凝胶法制备的纳米卤氧化镧在甲烷氧化偶联反应中的应用 |
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| 引用本文： | 侯玉慧,常刚,翁维正,夏文生,万惠霖.非水溶剂溶胶-凝胶法制备的纳米卤氧化镧在甲烷氧化偶联反应中的应用[J].催化学报,2011,32(9):1531-1536. |
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| 作者姓名： | 侯玉慧 常刚 翁维正 夏文生 万惠霖 |
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| 作者单位： | 厦门大学化学化工学院,固体表面物理化学国家重点实验室,醇醚酯清洁化工国家工程实验室,福建 厦门 361005 |
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| 基金项目： | 国家重点基础研究发展计划(973计划,2010CB732303); 国家自然科学基金(21033006,20923004,20373054)~~ |
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| 摘 要： | 采用非水溶剂溶胶-凝胶法制备了具有四方晶体相结构的纳米LaOX(X=Cl,Br).X射线粉末衍射和扫描电子显微镜结果表明,纳米LaOX样品的形貌规整、粒径均匀(平均粒径约为47nm).在甲烷氧化偶联(OCM)反应中,纳米LaOX显示出比常规尺度LaOX更高的催化活性和C2选择性,且纳米LaOX具有良好的稳定性.此外,常...
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| 关 键 词： | 纳米 卤氧化镧 甲烷氧化偶联 溶胶-凝胶 非水溶剂 低温活化 |
Nano-lanthanum Oxyhalide Prepared by Nonaqueous Sol-Gel for Oxidative Coupling of Methane |
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| HOU Yuhui,CHANG Gang,WENG Weizheng,XIA Wenshenga,WAN Huilin.Nano-lanthanum Oxyhalide Prepared by Nonaqueous Sol-Gel for Oxidative Coupling of Methane[J].Chinese Journal of Catalysis,2011,32(9):1531-1536. |
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| Authors: | HOU Yuhui CHANG Gang WENG Weizheng XIA Wenshenga WAN Huilin |
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| Institution: | HOU Yuhui,CHANG Gang,WENG Weizheng,XIA Wenshenga,WAN Huilinb State Key Laboratory of Physical Chemistry of Solid Surfaces,National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China |
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| Abstract: | LaOX (X = Cl, Br) nanoparticles with tetragonal crystal structure were successfully prepared via sol-gel approach with non-aqueous solvents. Characterizations by X-ray powder diffraction and scanning electronic microscopy show that the LaOX nanoparticles are regularly in shape and highly uniform in size with an average diameter of about 47 nm. For oxidative coupling of methane (OCM), the nanosize LaOX catalysts have higher methane conversion and C2 selectivity than the LaOX catalysts with conventional size ... |
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| Keywords: | nanometer lanthanum oxyhalide oxidative coupling of methane sol-gel non-aqueous solvent low temperature activation |
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