| MOF作模板制备多孔Au/CuxO催化剂及其CO氧化性能 |
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| 引用本文： | 刘朋飞,张所瀛,杨祝红,陆小华. MOF作模板制备多孔Au/CuxO催化剂及其CO氧化性能[J]. 化工学报, 2016, 67(6): 2325-2331. DOI: 10.11949/j.issn.0438-1157.20160002 |
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| 作者姓名： | 刘朋飞 张所瀛 杨祝红 陆小华 |
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| 作者单位： | 南京工业大学化学化工学院, 材料化学工程国家重点实验室, 江苏 南京 210009 |
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| 基金项目： | 国家自然科学基金项目(21136001);国家重点基础研究发展计划项目(2013CB733503);江苏高校优势学科建设工程资助项目。 |
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| 摘 要： | 采用MOF材料作模板,通过在Cu-BTC材料表面预先负载贵金属Au再热解的方法,成功制备了具有正八面体结构的新型多孔Au/CuxO负载型催化剂。通过降低热解环境中的O2浓度,调节氧化时间,实现了Au/Cu-BTC氧化产物组分的调节,分别制得了Au/Cu2O、Au/Cu2O-CuO、Au/CuO复合催化材料。将其用于CO催化氧化,发现所有Au/CuxO催化剂都表现出比Cu-BTC和Au/Cu-BTC更优异的催化性能,其中由于拥有较高的比表面积、Cu2O含量以及更好的Au的分散性,Au/Cu2O的CO氧化活性最佳,180℃即能实现CO的完全转化。
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| 关 键 词： | 金属-有机骨架材料 催化剂 纳米结构 多孔材料 Cu-BTC Au/Cu2O |
| 收稿时间： | 2016-01-03 |
| 修稿时间： | 2016-01-27 |
MOF-templated preparation of porous Au/CuxO catalysts with octahedral structures for CO oxidation |
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| LIU Pengfei,ZHANG Suoying,YANG Zhuhong,LU Xiaohua. MOF-templated preparation of porous Au/CuxO catalysts with octahedral structures for CO oxidation[J]. Journal of Chemical Industry and Engineering(China), 2016, 67(6): 2325-2331. DOI: 10.11949/j.issn.0438-1157.20160002 |
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| Authors: | LIU Pengfei ZHANG Suoying YANG Zhuhong LU Xiaohua |
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| Affiliation: | State Key Laboratory of Materials-Oriented Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China |
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| Abstract: | More recently, metal-organic frameworks (MOFs), as a excellent sacrificial template, have been widely used to fabricate a variety of porous metal oxides with special structures and performances. To take full advantage of MOFs in composition regulation, herein a novel method to prepare porous Au/CuxO composites with octahedral structures inherited from MOFs was introduced. Au/Cu-BTC was firstly prepared by the traditional deposition-precipitation method. Subsequently, pyrolysis of Au/Cu-BTC was conducted in 2% (volume fraction) O2 balanced with helium. By varying the time of heating, Au/CuxO composites including Au/Cu2O, Au/Cu2O-CuO and Au/CuO were successfully achieved. When tested in CO oxidation, these supported catalysts exhibited much better catalytic performances than Cu-BTC and Au/Cu-BTC due to the more active support of metal oxides. Thus, Au/Cu2O showed the best catalytic activity since the high surface area, Cu2O content and better dispersion of Au. |
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| Keywords: | metal-organic frameworks catalyst nanostructure porous material Cu-BTC Au/Cu2O |
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