Cu-Co/ZnAl2O4 Catalysts for CO Conversion to Higher Alcohols Synthesized from Co-Precipitated Hydrotalcite Precursors

Benjamin Mockenhaupt; Fatih Özcan; Remco Dalebout; Sebastian Mangelsen; Thomas Machowski; Petra E. de Jongh; Malte Behrens

doi:10.1002/cite.202200171

Cu-Co/ZnAl₂O₄ Catalysts for CO Conversion to Higher Alcohols Synthesized from Co-Precipitated Hydrotalcite Precursors

Benjamin Mockenhaupt, Fatih Özcan, Remco Dalebout, Sebastian Mangelsen, Thomas Machowski, Petra E. de Jongh, Malte Behrens^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The role of Cu:Co composition in bi-metallic Cu-Co/ZnAl₂O₄ catalysts on higher alcohol synthesis (HAS) was investigated at H₂:CO = 4. The addition of Cu strongly facilitated Co reduction upon catalyst activation and suppressed coke deposition during HAS. Formation of predominantly hydrocarbons and higher alcohols was observed on the bi-metallic catalysts. Co/ZnAl₂O₄ produced mainly CH₄ and Cu/ZnAl₂O₄ mainly CH₃OH, while at Cu:Co = 0.6 the best ethanol selectivity of 4.5 % was reached. The microstructure of the spent catalysts confirmed a close interaction of Cu and Co.

Original language	English
Pages (from-to)	1784-1797
Number of pages	14
Journal	Chemie-Ingenieur-Technik
Volume	94
Issue number	11
DOIs	https://doi.org/10.1002/cite.202200171
Publication status	Published - Nov 2022

Bibliographical note

Funding Information:
This work was supported by the Mercator Research Center Ruhr (MERCUR Pe‐2018‐0034). F.Ö. thanks the International Max Planck Research School RECHARGE for support. Prof. S. Schulz and Prof. M. Epple of the University of Duisburg‐Essen are gratefully acknowledged for allocating access to their characterization facilities. Open access funding enabled and organized by Projekt DEAL.

Funding Information:
This work was supported by the Mercator Research Center Ruhr (MERCUR Pe-2018-0034). F.Ö. thanks the International Max Planck Research School RECHARGE for support. Prof. S. Schulz and Prof. M. Epple of the University of Duisburg-Essen are gratefully acknowledged for allocating access to their characterization facilities. Open access funding enabled and organized by Projekt DEAL.

Publisher Copyright:
© 2022 The Authors. Chemie Ingenieur Technik published by Wiley-VCH GmbH.

Funding

This work was supported by the Mercator Research Center Ruhr (MERCUR Pe‐2018‐0034). F.Ö. thanks the International Max Planck Research School RECHARGE for support. Prof. S. Schulz and Prof. M. Epple of the University of Duisburg‐Essen are gratefully acknowledged for allocating access to their characterization facilities. Open access funding enabled and organized by Projekt DEAL. This work was supported by the Mercator Research Center Ruhr (MERCUR Pe-2018-0034). F.Ö. thanks the International Max Planck Research School RECHARGE for support. Prof. S. Schulz and Prof. M. Epple of the University of Duisburg-Essen are gratefully acknowledged for allocating access to their characterization facilities. Open access funding enabled and organized by Projekt DEAL.

Keywords

Co-precipitation
Coking
Cu-Co bi-metallic catalysts
Higher alcohol synthesis
Zinc oxide

Access to Document

10.1002/cite.202200171Licence: CC BY

Chemie Ingenieur Technik - 2022 - Mockenhaupt - Cu‐Co ZnAl2O4 Catalysts for CO Conversion to Higher Alcohols SynthesizedFinal published version, 923 KBLicence: CC BY

Cite this

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title = "Cu-Co/ZnAl2O4 Catalysts for CO Conversion to Higher Alcohols Synthesized from Co-Precipitated Hydrotalcite Precursors",

abstract = "The role of Cu:Co composition in bi-metallic Cu-Co/ZnAl2O4 catalysts on higher alcohol synthesis (HAS) was investigated at H2:CO = 4. The addition of Cu strongly facilitated Co reduction upon catalyst activation and suppressed coke deposition during HAS. Formation of predominantly hydrocarbons and higher alcohols was observed on the bi-metallic catalysts. Co/ZnAl2O4 produced mainly CH4 and Cu/ZnAl2O4 mainly CH3OH, while at Cu:Co = 0.6 the best ethanol selectivity of 4.5 % was reached. The microstructure of the spent catalysts confirmed a close interaction of Cu and Co.",

keywords = "Co-precipitation, Coking, Cu-Co bi-metallic catalysts, Higher alcohol synthesis, Zinc oxide",

author = "Benjamin Mockenhaupt and Fatih {\"O}zcan and Remco Dalebout and Sebastian Mangelsen and Thomas Machowski and {de Jongh}, {Petra E.} and Malte Behrens",

note = "Funding Information: This work was supported by the Mercator Research Center Ruhr (MERCUR Pe‐2018‐0034). F.{\"O}. thanks the International Max Planck Research School RECHARGE for support. Prof. S. Schulz and Prof. M. Epple of the University of Duisburg‐Essen are gratefully acknowledged for allocating access to their characterization facilities. Open access funding enabled and organized by Projekt DEAL. Funding Information: This work was supported by the Mercator Research Center Ruhr (MERCUR Pe-2018-0034). F.{\"O}. thanks the International Max Planck Research School RECHARGE for support. Prof. S. Schulz and Prof. M. Epple of the University of Duisburg-Essen are gratefully acknowledged for allocating access to their characterization facilities. Open access funding enabled and organized by Projekt DEAL. Publisher Copyright: {\textcopyright} 2022 The Authors. Chemie Ingenieur Technik published by Wiley-VCH GmbH.",

year = "2022",

month = nov,

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AU - Mockenhaupt, Benjamin

AU - Özcan, Fatih

AU - Dalebout, Remco

AU - Mangelsen, Sebastian

AU - Machowski, Thomas

AU - de Jongh, Petra E.

AU - Behrens, Malte

N1 - Funding Information: This work was supported by the Mercator Research Center Ruhr (MERCUR Pe‐2018‐0034). F.Ö. thanks the International Max Planck Research School RECHARGE for support. Prof. S. Schulz and Prof. M. Epple of the University of Duisburg‐Essen are gratefully acknowledged for allocating access to their characterization facilities. Open access funding enabled and organized by Projekt DEAL. Funding Information: This work was supported by the Mercator Research Center Ruhr (MERCUR Pe-2018-0034). F.Ö. thanks the International Max Planck Research School RECHARGE for support. Prof. S. Schulz and Prof. M. Epple of the University of Duisburg-Essen are gratefully acknowledged for allocating access to their characterization facilities. Open access funding enabled and organized by Projekt DEAL. Publisher Copyright: © 2022 The Authors. Chemie Ingenieur Technik published by Wiley-VCH GmbH.

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N2 - The role of Cu:Co composition in bi-metallic Cu-Co/ZnAl2O4 catalysts on higher alcohol synthesis (HAS) was investigated at H2:CO = 4. The addition of Cu strongly facilitated Co reduction upon catalyst activation and suppressed coke deposition during HAS. Formation of predominantly hydrocarbons and higher alcohols was observed on the bi-metallic catalysts. Co/ZnAl2O4 produced mainly CH4 and Cu/ZnAl2O4 mainly CH3OH, while at Cu:Co = 0.6 the best ethanol selectivity of 4.5 % was reached. The microstructure of the spent catalysts confirmed a close interaction of Cu and Co.

AB - The role of Cu:Co composition in bi-metallic Cu-Co/ZnAl2O4 catalysts on higher alcohol synthesis (HAS) was investigated at H2:CO = 4. The addition of Cu strongly facilitated Co reduction upon catalyst activation and suppressed coke deposition during HAS. Formation of predominantly hydrocarbons and higher alcohols was observed on the bi-metallic catalysts. Co/ZnAl2O4 produced mainly CH4 and Cu/ZnAl2O4 mainly CH3OH, while at Cu:Co = 0.6 the best ethanol selectivity of 4.5 % was reached. The microstructure of the spent catalysts confirmed a close interaction of Cu and Co.

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KW - Coking

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KW - Higher alcohol synthesis

KW - Zinc oxide

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