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Effect of Iron Promoter on Structure and Performance of K/Cu-Zn Catalyst for Higher Alcohols Synthesis from CO2 Hydrogenation
Li, Shanggui1,2; Guo, Haijun1,3; Luo, Cairong1,3; Zhang, Hairong1,3; Xiong, Lian1,3; Chen, Xinde1,3; Ma, Longlong1,3
2013-04-01
发表期刊CATALYSIS LETTERS
卷号143期号:4页码:345-355
摘要Effect of iron promoter on the microstructures of K/Cu-Zn catalyst was investigated by N-2 adsorption/desorption, X-ray diffraction (XRD), Field emission scanning electron microscope (FE-SEM) and H-2 temperature programmed reduction (H-2-TPR). Higher alcohols synthesis (HAS) from CO2 hydrogenation was performed in a fixed-bed reactor under the conditions of T = 300 A degrees C, P = 6.0 MPa, GHSV = 5,000 h(-1) and H-2/CO2 = 3. These characterization results showed that incorporation of iron into the K/Cu-Zn catalyst resulted in increase of BET surface area and dispersion of catalyst particles. Especially, medium iron addition facilitated the synergistic effect between Cu-Fe and Zn-Fe interactions, improved the reduction of catalyst and increased the amounts of dispersed copper and iron carbides active centers. In the HAS reaction, the conversion of CO2, the space time yield and selectivity of C2+OH increased first and then decreased as the increase of iron concentration. Among these iron-promoted K/Cu-Zn catalysts, the CuZnFe0.5K0.15 catalyst with a Fe/(Cu + Zn + Fe) ratio of 0.2 exhibited the highest alcohol selectivity of 36.67 wt% with a high C2+OH/C1OH of 6.76, which can be radically attributed to the especial morphology and optimum reduction degree.
文章类型Article
关键词Higher Alcohols Synthesis Co2 Hydrogenation Iron Promoter K/cu-zn-fe Catalyst Synergistic Effect
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s10562-013-0977-7
研究领域[WOS]Chemistry
关键词[WOS]CU-BASED CATALYSTS ; CARBON-DIOXIDE ; METHANOL SYNTHESIS ; COMPOSITE CATALYSTS ; ETHANOL SYNTHESIS ; MIXED ALCOHOLS ; SYNGAS ; CONVERSION ; FE
收录类别SCI
语种英语
WOS类目Chemistry, Physical
WOS记录号WOS:000316199600007
引用统计
被引频次:25[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10083
专题中国科学院广州能源研究所
集成技术研发中心
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
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GB/T 7714
Li, Shanggui,Guo, Haijun,Luo, Cairong,et al. Effect of Iron Promoter on Structure and Performance of K/Cu-Zn Catalyst for Higher Alcohols Synthesis from CO2 Hydrogenation[J]. CATALYSIS LETTERS,2013,143(4):345-355.
APA Li, Shanggui.,Guo, Haijun.,Luo, Cairong.,Zhang, Hairong.,Xiong, Lian.,...&Ma, Longlong.(2013).Effect of Iron Promoter on Structure and Performance of K/Cu-Zn Catalyst for Higher Alcohols Synthesis from CO2 Hydrogenation.CATALYSIS LETTERS,143(4),345-355.
MLA Li, Shanggui,et al."Effect of Iron Promoter on Structure and Performance of K/Cu-Zn Catalyst for Higher Alcohols Synthesis from CO2 Hydrogenation".CATALYSIS LETTERS 143.4(2013):345-355.
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