Wallace, William T., Hayward, James S., Ho, Chen-Yu, Marsh, Amy R., Tariq, Anisa and Bartley, Jonathan K.  ORCID: https://orcid.org/0000-0003-4640-541X
2021.
Triethylamine-water as a switchable solvent for the synthesis of Cu/ZnO catalysts for carbon dioxide hydrogenation to methanol.
Topics in Catalysis
64
, pp. 984-991.
10.1007/s11244-021-01457-6
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Abstract
Cu/ZnO catalyst precursors for industrial methanol synthesis catalysts are traditionally synthesised by coprecipitation. In this study, a new precipitation route has been investigated based on anti-solvent precipitation using a switchable solvent system of triethylamine and water. This system forms a biphasic system under a nitrogen atmosphere and can be switched to an ionic liquid single phase under a carbon dioxide atmosphere. When metal nitrate solutions were precipitated from water using triethylamine–water as the anti-solvent a hydroxynitrate phase, gerhardite, was formed, rather than the hydroxycarbonate, malachite, formed by coprecipitation. When calcined and reduced, the gerhardite precursors formed Cu/ZnO catalysts which showed better productivity for methanol synthesis from CO2 hydrogenation than a traditional malachite precursor, despite their larger CuO crystallite size determined by X-ray diffraction. The solvents could be recovered by switching to the biphasic system after precipitation, to allow solvent recycling in the process, reducing waste associated with the catalyst synthesis.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Chemistry Research Institutes & Centres > Cardiff Catalysis Institute (CCI) |
| Additional Information: | This article is licensed under a Creative Commons Attribution 4.0 International License |
| Publisher: | Springer |
| ISSN: | 1022-5528 |
| Funders: | EPSRC |
| Date of First Compliant Deposit: | 21 June 2021 |
| Date of Acceptance: | 18 May 2021 |
| Last Modified: | 10 Jun 2023 16:16 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/142027 |
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