| Fe、Co组成对Cu-Fe-Co基混合醇催化剂合成性能的影响 |
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| 引用本文： | 郭海军,熊莲,罗彩容,丁飞,陈新德,陈勇.Fe、Co组成对Cu-Fe-Co基混合醇催化剂合成性能的影响[J].物理化学学报,2011,27(11):2632-2638. |
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| 作者姓名： | 郭海军 熊莲 罗彩容 丁飞 陈新德 陈勇 |
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| 作者单位： | 1. Key Laboratory of Renewable Energy and Natural Gas Hydrate, Chinese Academy of Sciences, Guangzhou 510640, P. R. China;
2. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China;
3. Guangzhou Branch of Chinese Academy of Sciences, Guangzhou 510640, P. R. China |
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| 基金项目： | 广州市科技计划项目，中国科学院可再生能源与天然气水合物重点实验室基金项日 |
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| 摘 要： | 采用共浸渍法制备了一系列不同Fe、Co组成的Cu-Fe-Co基混合醇催化剂,对其CO加氢合成混合醇反应性能进行了考察,并采用BET比表面积分析、X射线衍射（XRD）、X射线光电子能谱（XPS）、场发射扫描电子显微镜（FE-SEM）及H2程序升温还原（H2-TPR）等手段对其进行了表征.结果表明:Cu-Fe二元催化剂添加适量的Co可以明显提高催化剂醇的明空收率（STY）、CO转化率,而总醇选择性不变.当活性组分Cu、Fe及助剂Co的质量分数分别为25%、22%、3%时,催化剂醇的时空收率高达205.6 g·kg-1·h-1,CO转化率为56.6%.XRD、XPS和TPR结果表明:在Cu组分含量不变时,少量Co组分的引入使催化剂表面形成微量的CuFe2O4相,促进了Cu-Fe组分间相互作用的增强,改善了催化剂活性组分的分散度,有利于提高催化剂活性及醇的时空收率;随Co含量的增大,催化剂中金属组分间的相互作用发生转变,形成了Cu-Co尖晶石相,导致催化剂的醇选择性有所下降.
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| 关 键 词： | Cu-Fe-Co基催化剂 CO加氢 混合醇 时空收率 低碳混合醇选择性 |
| 收稿时间： | 2011-05-17 |
| 修稿时间： | 2011-09-05 |
Effect of FelCo Mass Ratio on Catalytic Performances of Cu-Fe-Co Based Catalysts for Mixed Alcohols Synthesis |
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| GUO Hai-Jun,XIONG Lian,LUO Cai-Rong,DING Fei,CHEN Xin-De,CHEN Yong.Effect of FelCo Mass Ratio on Catalytic Performances of Cu-Fe-Co Based Catalysts for Mixed Alcohols Synthesis[J].Acta Physico-Chimica Sinica,2011,27(11):2632-2638. |
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| Authors: | GUO Hai-Jun XIONG Lian LUO Cai-Rong DING Fei CHEN Xin-De CHEN Yong |
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| Institution: | 1. Key Laboratory of Renewable Energy and Natural Gas Hydrate, Chinese Academy of Sciences, Guangzhou 510640, P. R. China;
2. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China;
3. Guangzhou Branch of Chinese Academy of Sciences, Guangzhou 510640, P. R. China |
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| Abstract: | A series of Cu-Fe-Co based catalysts with different mass fractions of Fe and Co were prepared by co-impregnation method.The catalytic performances of the catalysts for mixed alcohols synthesis from carbon monoxide hydrogenation were investigated in a fixed bed flow reactor.The samples were characterized by Brunauer-Emmett-Teller(BET),X-ray diffraction(XRD),X-ray photoelectron spectroscopy (XPS),field-emission scanning electron microscope(FE-SEM),and H_2 temperature-programmed reduction (H_2-TPR).The results... |
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| Keywords: | Cu-Fe-Co based catalyst CO hydrogenation Mixed alcohol Space-time yield Selectivity of mixed alcohols |
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