Publisher: Springer Science and Business Media LLC

Issue: 17-20

License: [{"start"=>{"date-parts"=>[[2021, 6, 12]], "date-time"=>"2021-06-12T00:00:00Z", "timestamp"=>1623456000000}, "content-version"=>"tdm", "delay-in-days"=>0, "URL"=>"https://creativecommons.org/licenses/by/4.0"}, {"start"=>{"date-parts"=>[[2021, 6, 12]], "date-time"=>"2021-06-12T00:00:00Z", "timestamp"=>1623456000000}, "content-version"=>"vor", "delay-in-days"=>0, "URL"=>"https://creativecommons.org/licenses/by/4.0"}]

Publication date(s): 2021/12/12 (online)

Pages: 984-991

Volume: 64 Issue: 17-20

Journal: Topics in Catalysis

Link: [{"URL"=>"https://link.springer.com/content/pdf/10.1007/s11244-021-01457-6.pdf", "content-type"=>"application/pdf", "content-version"=>"vor", "intended-application"=>"text-mining"}, {"URL"=>"https://link.springer.com/article/10.1007/s11244-021-01457-6/fulltext.html", "content-type"=>"text/html", "content-version"=>"vor", "intended-application"=>"text-mining"}, {"URL"=>"https://link.springer.com/content/pdf/10.1007/s11244-021-01457-6.pdf", "content-type"=>"application/pdf", "content-version"=>"vor", "intended-application"=>"similarity-checking"}]

URL: http://dx.doi.org/10.1007/s11244-021-01457-6

AbstractCu/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.