| 表面活性剂修饰的CuCoMn催化剂催化合成低碳醇 |
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| 引用本文： | 张朝霞,毕培燕,姜沛汶,李全新.表面活性剂修饰的CuCoMn催化剂催化合成低碳醇[J].化学物理学报,2014,27(4):450-456. |
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| 作者姓名： | 张朝霞 毕培燕 姜沛汶 李全新 |
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| 作者单位： | 中国科学技术大学化学物理系，生物质洁净能源安徽省重点实验室，合肥230026;中国科学技术大学化学物理系，生物质洁净能源安徽省重点实验室，合肥230026;中国科学技术大学化学物理系，生物质洁净能源安徽省重点实验室，合肥230026;中国科学技术大学化学物理系，生物质洁净能源安徽省重点实验室，合肥230026 |
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| 摘 要： | 分别采用阳离子(十六烷基三甲基溴化铵，CTAB)、阴离子(十二烷基硫酸钠，SDS)、非离子(三嵌段共聚物，P123)三种不同类型的表面活性剂对CuCoMn基催化剂进行改性，利用N2吸脱附、XRD、XPS、IR手段表征了催化剂的微观结构．在生物质基合成气合成高醇中的应用研究结果表明，SDS修饰的CuCoMn催化剂表现出较高的CO转化率(29.7%)，而CTAB修饰的CuCoMn催化剂具有优良的高醇选择性(41.2%)．同时，三种表面活性剂修饰的催化剂均不同程度地提高了高醇产率及其在醇产
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| 关 键 词： | 高醇，表面活性剂，改性，CuCoMn催化剂 |
| 收稿时间： | 2014/4/28 0:00:00 |
Effect of Surfactant-Induced Modifications on CuCoMn Catalysts for Higher Alcohol Synthesis |
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| Zhao-xia Zhang,Pei-yan Bi,Pei-wen Jiang and Quan-xin Li.Effect of Surfactant-Induced Modifications on CuCoMn Catalysts for Higher Alcohol Synthesis[J].Chinese Journal of Chemical Physics,2014,27(4):450-456. |
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| Authors: | Zhao-xia Zhang Pei-yan Bi Pei-wen Jiang and Quan-xin Li |
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| Institution: | Department of Chemical Physics, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China;Department of Chemical Physics, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China;Department of Chemical Physics, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China;Department of Chemical Physics, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | A series of surfactant-modi ed CuCoMn-based catalysts were prepared for higher alco-hol synthesis from biomass-based syngas. Three typical surfactants, cetyltrimethylammo-nium bromide (CTAB), sodium dodecyl sulfate (SDS) and pluronic P123 triblock copoly-mer (EO20PO70EO20), were employed. Compared to surfactant-free CuCoMn catalyst, CO conversion increased from 17.4% to 29.7% over SDS-modi ed CuCoMn catalyst, and the selectivity of higher alcohols increased from 22.0% to 41.2% over CTAB-modi ed catalyst. Besides, the proportions of higher alcohols in total alcohols increased over all surfactant-modi ed catalysts. The catalysts were characterized by N2 adsorption/desorption, XRD, XPS and IR analysis. The results showed that several more favorable features rendered the CTAB-modi ed CuCoMn catalyst to be suitable for higher alcohol production, such as the larger pore size, better crystallinity of CuCoMnO4 spinel, moderate surface atomic distribu-tion and lower valence of metallic ions. In addition, it was veri ed that CTAB addition at the metal precipitation stage was bene cial to higher alcohol synthesis. Surfactant-induced modi cation provides a promising alternative method for catalyst improvement in synthesis of higher alcohols. |
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| Keywords: | Higher alcohol Surfactant Modi cation CuCoMn catalyst |
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