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Effect of pH on Co‐precipitated Cu‐ZnO‐ZrO2 Catalysts Used in CO2 Hydrogenation: the Role of Zn‐malachite in the Precursors▴.

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Title: Effect of pH on Co‐precipitated Cu‐ZnO‐ZrO2 Catalysts Used in CO2 Hydrogenation: the Role of Zn‐malachite in the Precursors▴.
Authors: Gao, W.1,2,3 (AUTHOR) gao_wengui@126.com, Qu, G.3,4 (AUTHOR), Xu, M3,4 (AUTHOR), Chang, S.2,3 (AUTHOR), Na, W.1,2,3 (AUTHOR)
Source: Fuel Cells. Feb2021, Vol. 21 Issue 1, p31-38. 8p.
Subject Terms: *pH effect, *Hydrogenation, *Fischer-Tropsch process, Catalyst selectivity, Catalysts, Catalyst testing
Abstract: A series of Cu–ZnO–ZrO2 catalysts were prepared at different pH by co‐precipitation method and tested for the synthesis of methanol by CO2 hydrogenation. The influence of pH on the phase formation of precursor, the average Cu particle size and the interaction among different elements were discussed in detail. The activity and selectivity of the catalysts were tested for hydrogenation of carbon dioxide to methanol. When the precipitation was conducted at pH = 8.0, in addition to aurichalcite, Zn‐malachite was obviously present in the precursor and the resulting catalysts were more active. It was found that the pH exerts its effect through altering the phase composition of the precursors. The present of Zn‐malachite in the precursors facilitates the formation of more intimate interdispersion of CuO and ZnO, and the smallest Cu particle after calcination and reduction. [ABSTRACT FROM AUTHOR]
Copyright of Fuel Cells is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of pH on Co‐precipitated Cu‐ZnO‐ZrO<subscript>2</subscript> Catalysts Used in CO<subscript>2</subscript> Hydrogenation: the Role of Zn‐malachite in the Precursors<superscript>▴</superscript>.
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  Data: <searchLink fieldCode="AR" term="%22Gao%2C+W%2E%22">Gao, W.</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> gao_wengui@126.com</i><br /><searchLink fieldCode="AR" term="%22Qu%2C+G%2E%22">Qu, G.</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+M%22">Xu, M</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chang%2C+S%2E%22">Chang, S.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Na%2C+W%2E%22">Na, W.</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Fuel+Cells%22">Fuel Cells</searchLink>. Feb2021, Vol. 21 Issue 1, p31-38. 8p.
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  Data: *<searchLink fieldCode="DE" term="%22pH+effect%22">pH effect</searchLink><br />*<searchLink fieldCode="DE" term="%22Hydrogenation%22">Hydrogenation</searchLink><br />*<searchLink fieldCode="DE" term="%22Fischer-Tropsch+process%22">Fischer-Tropsch process</searchLink><br /><searchLink fieldCode="DE" term="%22Catalyst+selectivity%22">Catalyst selectivity</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts%22">Catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Catalyst+testing%22">Catalyst testing</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: A series of Cu–ZnO–ZrO2 catalysts were prepared at different pH by co‐precipitation method and tested for the synthesis of methanol by CO2 hydrogenation. The influence of pH on the phase formation of precursor, the average Cu particle size and the interaction among different elements were discussed in detail. The activity and selectivity of the catalysts were tested for hydrogenation of carbon dioxide to methanol. When the precipitation was conducted at pH = 8.0, in addition to aurichalcite, Zn‐malachite was obviously present in the precursor and the resulting catalysts were more active. It was found that the pH exerts its effect through altering the phase composition of the precursors. The present of Zn‐malachite in the precursors facilitates the formation of more intimate interdispersion of CuO and ZnO, and the smallest Cu particle after calcination and reduction. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Fuel Cells is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/fuce.202000032
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        Text: English
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      – SubjectFull: pH effect
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      – SubjectFull: Hydrogenation
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      – SubjectFull: Fischer-Tropsch process
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      – SubjectFull: Catalyst selectivity
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      – TitleFull: Effect of pH on Co‐precipitated Cu‐ZnO‐ZrO2 Catalysts Used in CO2 Hydrogenation: the Role of Zn‐malachite in the Precursors▴.
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              Text: Feb2021
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              Y: 2021
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