NDLI: Effect of Iron Promoter on Structure and Performance of K/Cu–Zn Catalyst for Higher Alcohols Synthesis from CO2 Hydrogenation

Content Provider	Springer Nature Link
Author	Li, Shanggui Guo, Haijun Luo, Cairong Zhang, Hairong Xiong, Lian Chen, Xinde Ma, Longlong
Copyright Year	2013
Abstract	Effect of iron promoter on the microstructures of K/Cu–Zn catalyst was investigated by N2 adsorption/desorption, X-ray diffraction (XRD), Field emission scanning electron microscope (FE-SEM) and H2 temperature programmed reduction (H2-TPR). Higher alcohols synthesis (HAS) from CO2 hydrogenation was performed in a fixed-bed reactor under the conditions of T = 300 °C, P = 6.0 MPa, GHSV = 5,000 h−1 and H2/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.The incorporation of medium iron promoter into the K/Cu-Zn catalyst improved obviously the catalytic performances of higher alcohols synthesis from CO2 hydrogenation .
Starting Page	345
Ending Page	355
Page Count	11
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	143
Issue Number	4
e-ISSN	1572879X
Language	English
Publisher	Springer US
Publisher Date	2013-03-02
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Higher alcohols synthesis CO2 hydrogenation Iron promoter K/Cu–Zn–Fe catalyst Synergistic effect Catalysis Industrial Chemistry/Chemical Engineering Organometallic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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