Journal article
Impact of doping ZrO2 with Sn on CO2 hydrogenation over dispersed Ru
J Zhao, Y Wang, H Arandiyan, AM D'Angelo, A Seeber, D Shah, RA Caruso, IS Cole, Y Yang, K Wilson, R Lippi, AF Lee
Materials Today Chemistry | Published : 2023
Abstract
Thermocatalytic CO2 hydrogenation is a scalable route to renewable fuels and chemicals that can also mitigate climate change. Here, we demonstrate how subtle changes in a mixed phase zirconia support induce large changes in catalyst activity and selectivity. Ru/SnxZr1-xO2 catalysts were prepared using co-precipitated Sn-doped ZrO2. Ru/ZrO2 and Ru/Sn0.01Zr0.99O2 both comprised tetragonal (t-) and monoclinic (m-) ZrO2 nanoparticles decorated by RuO2·H2O clusters. Ru/Sn0.2Zr0.8O2 exhibited similar textural properties and metal speciation, however, X-ray diffraction evidenced new crystalline phases wherein Sn atoms substituted for Zr. Operando XRD evidenced minimal perturbation of ZrO2 and Sn-do..
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Grants
Awarded by Australian Nuclear Science and Technology Organisation
Funding Acknowledgements
The authors acknowledge Dr Shaun C. Howard for assistance during Synchrotron experiments and Dr Winston Liew for ICP measurements at CSIRO. Dr Edwin Mayes is thanked for his help with HRTEM and HAADF-STEM imaging. This work was supported by the CSIRO Active Integrated Matter Future Science Platform and CSIRO Energy strategic fund, including a PhD scholarship and the Australian Nuclear Science and Technology Organisation for a Postgraduate Research Award to Jiajia Zhao. The authors acknowledge financial support from the Australian Research Council (ARC Grants DP200100313, DP200100204 & nbsp;and LE210100100) . The authors acknowledge the scientific and technical assistance of the RMIT Microscopy & amp; Microanalysis Facility (RMMF) , a linked laboratory of the Australian Microscopy & amp; Micro-analysis Research Facility. Aspects of this work were undertaken at the Australian Synchrotron (ANSTO) at the Powder diffraction beamline (proposal M15762 and M16131) .