Topics in Catalysis

, Volume 61, Issue 3–4, pp 144–153 | Cite as

Solvent Free Synthesis of PdZn/TiO2 Catalysts for the Hydrogenation of CO2 to Methanol

  • Hasliza Bahruji
  • Jonathan Ruiz Esquius
  • Michael Bowker
  • Graham Hutchings
  • Robert D. Armstrong
  • Wilm Jones
Original Paper


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.


CO2 hydrogenation Methanol PdZn alloy Green methanol Hydrogen storage 



The authors would like to acknowledge UK Catalysis Hub and the EPSRC for research funding (EP/K014854/1, EP/I038748/1, EP/K014714/1 and EP/N010531/1).


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Hasliza Bahruji
    • 1
  • Jonathan Ruiz Esquius
    • 1
  • Michael Bowker
    • 1
    • 2
  • Graham Hutchings
    • 1
  • Robert D. Armstrong
    • 1
  • Wilm Jones
    • 1
    • 2
  1. 1.School of Chemistry, Cardiff Catalysis InstituteCardiff UniversityCardiffUK
  2. 2.The UK Catalysis Hub, Research Complex at Harwell, HarwellOxonUK

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