| 焙烧温度对K-Cu/Zn/La/ZrO2催化剂上异丁醇合成的影响 |
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| 引用本文： | 武应全,解红娟,寇永利,谭理,韩怡卓,谭猗生.焙烧温度对K-Cu/Zn/La/ZrO2催化剂上异丁醇合成的影响[J].燃料化学学报,2013,41(7):868-874. |
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| 作者姓名： | 武应全 解红娟 寇永利 谭理 韩怡卓 谭猗生 |
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| 作者单位： | 1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Taiyuan University of Technology,College of Chemistry and Chemical Engineering, Taiyuan 030024, China |
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| 基金项目： | 中国科学院山西煤炭化学研究所前瞻性布局项目(2011SQZBJ13);国家重大科学仪器设备开发专项(2011YQl20039) |
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| 摘 要： | 采用共沉淀法制备了Cu/Zn/La/ZrO2催化剂,并浸渍K对其进行改性.以合成气合成异丁醇为探针反应,考察了焙烧温度对K-Cu/Zn/La/ZrO2催化剂合成反应的影响.采用XRD、TG、BET、NH3-TPD、H2-TPR、Raman及XPS等手段表征了催化剂的结构和表面性质.结果表明,催化剂体相结构、比表面积与其催化活性没有直接关系;催化剂表面强酸中心的存在不利于异丁醇的生成;Cu-Zn-Zr活性组分间协同作用对催化剂活性影响很大,450 ℃焙烧温度下,Cu-Zn-Zr活性组分间协同作用最强,CuO最容易还原,催化活性最高,此时CO的转化率(物质的量)达到69.47%,醇中异丁醇的选择性(质量分数)为19.09%,甲醇+异丁醇的选择性(质量分数)为95.02%.
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| 关 键 词： | 合成气 异丁醇 焙烧温度 铜 氧化锆 |
| 收稿时间： | 2013-02-13 |
Effect of calcination temperature on performance of K-Cu/Zn/La/ZrO2 for isobutanol synthesis |
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| WU Ying-quan,XIE Hong-juan,KOU Yong-li,TAN Li,HAN Yi-zhuo,TAN Yi-sheng.Effect of calcination temperature on performance of K-Cu/Zn/La/ZrO2 for isobutanol synthesis[J].Journal of Fuel Chemistry and Technology,2013,41(7):868-874. |
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| Authors: | WU Ying-quan XIE Hong-juan KOU Yong-li TAN Li HAN Yi-zhuo TAN Yi-sheng |
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| Institution: | 1(1.State Key Laboratory of Coal Conversion,Institute of Coal Chemistry, Chinese Academy of Sciences,Taiyuan 030001,China; 2.University of Chinese Academy of Sciences,Beijing 100049,China 3.Taiyuan University of Technology,College of Chemistry and Chemical Engineering,Taiyuan 030024,China) |
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| Abstract: | K-promoted Cu/Zn/La/ZrO2 catalyst were prepared by coprecipitation methods. Hydrogenation of CO was used as a probe reaction to investigate the catalytic performance. Structure and surface properties of K-Cu/Zn/La/ZrO2 catalysts were characterized by XRD,TG,BET, NH3-TPD, H2-TPR, Raman and XPS technics. The results indicated that structure and specific surface had no direct relationship with the catalyst activity. Strong acidic sites of catalyst surface were not good for the formation of isobutanol. Synergy among Cu-Zn-Zr has an important effect on the activity of K-Cu/Zn/La/ZrO2 catalysts. When the calcinations temperature was at 450 ℃, synergistic effect of Cu-Zn-Zr became strongest and CuO could be reduced easily. Under the optimum calcination temperature, conversion of CO reached 69.47% and selectivity of isobutanol approached 19.09%. Methanol and isobutanol were the primary products and occupied 95.02% in the alcohol products. |
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| Keywords: | syngas isobutanol calcination temperature copper zirconia |
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