| Ag-Hollandite纳米线的合成及其催化氧化乙醇的性能 |
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| 引用本文： | 陈俊利,李娟,刘琪英,黄秀敏,申文杰. Ag-Hollandite纳米线的合成及其催化氧化乙醇的性能[J]. 催化学报, 2007, 28(12): 1034-1036. DOI: 10.1016/S1872-2067(08)60004-2 |
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| 作者姓名： | 陈俊利 李娟 刘琪英 黄秀敏 申文杰 |
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| 作者单位： | 中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连,116023;中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连,116023;中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连,116023;中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连,116023;中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连,116023 |
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| 摘 要： | 通过在硝酸溶液中373K回流AgMnO4和Mn(NO3)2的混合物制备了Ag-hollandite纳米线材料,并将其用于乙醇选择性氧化反应.X射线衍射谱表明所得材料的主要晶相为Ag-hollandite,但有少量的软锰矿形成.氮气吸附-脱附实验证实材料存在微孔结构.场发射扫描电镜和透射电镜观察表明纳米线长度为0.5～4.0μm,直径为10～20nm.Ag-hollandite纳米线是一种很有前途的乙醇选择性氧化制乙醛催化剂,503K时在120h的反应时间内,乙醇转化率为82%,乙醛选择性为95%.
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| 关 键 词： | 银 锰钡矿 纳米线 乙醇氧化 |
| 文章编号： | 0253-9837（2007）12-1034-03 |
| 收稿时间： | 2007-09-26 |
| 修稿时间： | 2007-09-26 |
Facile Synthesis of Ag-Hollandite Nanofibers and Their Catalytic Activity for Ethanol Selective Oxidation |
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| CHEN Junli,LI Juan,LIU Qiying,HUANG Xiumin,SHEN Wenjie. Facile Synthesis of Ag-Hollandite Nanofibers and Their Catalytic Activity for Ethanol Selective Oxidation[J]. Chinese Journal of Catalysis, 2007, 28(12): 1034-1036. DOI: 10.1016/S1872-2067(08)60004-2 |
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| Authors: | CHEN Junli LI Juan LIU Qiying HUANG Xiumin SHEN Wenjie |
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| Affiliation: | aState Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China |
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| Abstract: | Ag-hollandite nanofibers were synthesized by refluxing a mixture of AgMnO4 and Mn(NO3)2 in nitrate acid solution at 373 K and used for ethanol selective oxidation. The X-ray diffraction pattern showed that the main crystalline phase was Ag-hollandite, but a small amount of pyrolusite was also formed. The N2 adsorption-desorption isotherms confirmed the presence of a microporous structure. Field emission scanning electron microscopy and transmission electron microscopy showed that the lengths of the nanofibers were 0.5–4.0 μm, and the diameters were 10–20 nm. The Ag-hollandite nanofibers gave a promising catalytic performance for ethanol selective oxidation to acetaldehyde, with an ethanol conversion of 82% and acetaldehyde selectivity of 95% at 503 K for 120 h time-on-stream. |
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| Keywords: | silver hollandite nanofiber ethanol oxidation |
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