Fe、Co组成对Cu-Fe-Co基混合醇催化剂合成性能的影响
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H_2程序升温还原（H_2-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：...
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| Published in | 物理化学学报 Vol. 27; no. 11; pp. 2632 - 2638 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国科学院广州能源研究所,广州510640%中国科学院广州能源研究所,广州,510640%中国科学院广州分院,广州,510640
2011
中国科学院可再生能源与天然气水合物重点实验室,广州510640 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-6818 |
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| Abstract | 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H_2程序升温还原（H_2-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CuFe_2O_4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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| AbstractList | 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H_2程序升温还原（H_2-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CuFe_2O_4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. O643; 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时空收率(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205.6g·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. |
| Author | 郭海军 熊莲 罗彩容 丁飞 陈新德 陈勇 |
| AuthorAffiliation | 中国科学院可再生能源与天然气水合物重点实验室,广州510640 中国科学院广州能源研究所,广州510640 中国科学院广州分院,广州510640 |
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| Author_FL | GUO Hai-Jun DING Fei CHEN Yong XIONG Lian LUO Cai-Rong CHEN Xin-De |
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| DocumentTitleAlternate | Effect of Fe/Co Mass Ratio on Catalytic Performances of Cu-Fe-Co Based Catalysts for Mixed Alcohols Synthesis |
| DocumentTitle_FL | Effect of FelCo Mass Ratio on Catalytic Performances of Cu-Fe-Co Based Catalysts for Mixed Alcohols Synthesis |
| EndPage | 2638 |
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| Keywords | 低碳混合醇选择性 混合醇 CO加氢 时空收率 Cu-Fe-Co基催化剂 |
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| Notes | Cu-Fe-Co based catalyst; CO hydrogenation; Mixed alcohol; Space-time yield; Selectivity of mixed alcohols 11-1892/06 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 showed that the addition of a suitable content of Co to the Cu-Fe based catalyst significantly improved the space-time yield（STY） and CO conversion while alcohol selectivity was constant.For the catalyst with a mass fraction of Cu,Fe,and Co of 25%,22%,and 3%,respectively,a STY of 205.6 g·kg~（-1）·h~（-1） and CO conversion of 56.6%were obtained.The XRD,XPS,and TPR results showed that when the Cu |
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| PublicationTitle | 物理化学学报 |
| PublicationTitleAlternate | Acta Physico-Chimica Sinica |
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| PublicationYear | 2011 |
| Publisher | 中国科学院广州能源研究所,广州510640%中国科学院广州能源研究所,广州,510640%中国科学院广州分院,广州,510640 中国科学院可再生能源与天然气水合物重点实验室,广州510640 |
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| SubjectTerms | CO加氢 Cu-Fe-Co基催化剂 低碳混合醇选择性 时空收率 混合醇 |
| Title | 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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