Russian Journal of Physical Chemistry A

, Volume 92, Issue 5, pp 884–888 | Cite as

Synthesis of Higher Alcohols via Syngas on Cu/Zn/Si Catalysts. Effect of Polyethylene Glycol Content

Chemical Kinetics and Catalysis

Abstract

Cu/Zn/Si catalysts with different polyethylene glycol (PEG) content were prepared by a complete liquid-phase method, and characterized by XRD, H2-TPR, N2-adsorption, and XPS. The influence of PEG content on the higher alcohols synthesis from syngas was investigated. The results showed that addition of PEG can influence the texture and surface properties of the catalysts, and therefore affect their activity and product distribution. With an increase in PEG content, BET surface area, Cu crystallite size and surface active ingredient content of the catalysts first increased and then decreased, the CO conversion had similar variation tendency. However, the pore volume and pore diameter of the catalyst increased, and the binding energy of the active component and the content of Cu2O decreased, which resulted in higher catalyst selectivity towards higher alcohols. The highest C2+OH selectivity in total alcohols was 60.6 wt %.

Keywords

higher alcohols syngas Cu/Zn/Si catalysts CO hydrogenation PEG 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • Rong-Ji Cui
    • 1
  • Xing Yan
    • 2
  • Jin-Chuan Fan
    • 2
  • Wei Huang
    • 3
  1. 1.College of Electrical and Power EngineeringTaiyuan University of TechnologyTaiyuanChina
  2. 2.College of Chemistry and Chemical EngineeringTaiyuan University of TechnologyTaiyuanChina
  3. 3.Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi ProvinceTaiyuan University of TechnologyTaiyuan, ShanxiChina

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