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Solvent free synthesis of PdZn/TiO2 catalysts for the hydrogenation of CO2 to methanol

Bahruji, Hasliza, Ruiz Esquius, Jonathan, Bowker, Michael ORCID:, Hutchings, Graham ORCID:, Armstrong, Robert D. and Jones, Wilm 2018. Solvent free synthesis of PdZn/TiO2 catalysts for the hydrogenation of CO2 to methanol. Topics in Catalysis 61 (3-4) , pp. 144-153. 10.1007/s11244-018-0885-6

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Catalytic upgrading of CO2 to value-added chemicals is an important challenge within the chemical sciences. Of particular interest are catalysts which are both active and selective for the hydrogenation of CO2 to methanol. PdZn alloy nanoparticles supported on TiO2 via a solvent-free chemical vapour impregnation method are shown to be effective for this reaction. This synthesis technique is shown to minimise surface contaminants, which are detrimental to catalyst activity. The effect of reductive heat treatments on both structural properties of PdZn/TiO2 catalysts and rates of catalytic CO2 hydrogenation are investigated. PdZn nanoparticles formed upon reduction showed high stability towards particle sintering at high reduction temperature with average diameter of 3–6 nm to give 1710 mmol kg−1 h of methanol. Reductive treatment at high temperature results in the formation of ZnTiO3 as well as PdZn, and gives the highest methanol yield.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Publisher: Springer
ISSN: 1022-5528
Funders: UK Catalysis Hub and the EPSRC
Date of First Compliant Deposit: 14 February 2018
Date of Acceptance: 12 January 2018
Last Modified: 20 Feb 2024 17:13

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