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High-Throughput Discovery of Hf Promotion on the Formation of Hcp Co and Fischer-Tropsch Activity

preprint
submitted on 09.09.2020 and posted on 10.09.2020 by Luis Alvarado Rupflin, Hendrik. Van Rensberg, Marco Zanella, Elliot J Carrington, Alexios Grigoropoulos, Troy Manning, John Bleddyn Claridge, Alexandros P Katsoulidis, Robert P. Tooze, Matthew J Rosseinsky
A proxy-based high-throughput experimental approach was used to explore the stability and activity of Co-based Fischer Tropsch Synthesis catalysts with different promoters on various supports. The protocol is based on the estimation by XRD of active phase, Co, particle size and relative amounts of crystalline phases, Co to support. Sequential libraries samples enabled exploration of four Co loadings with five different promoters on six support materials. Catalysts stable to aging in syngas, displaying minimal change of particle size or relative area, were evaluated for their activity under industrial conditions. This procedure identified SiC as support for stable catalysts and a combination of Ru and Hf to promote the formation hcp Co. Unsupported bulk samples of Co with appropriate amounts of Ru and Hf revealed that the formation of hcp Co is independent of the support. The hcp Co containing catalyst presented the highest catalytic activity and C5+ selectivity amongst the samples tested in this study confirming the effectiveness of the proxy-based high-throughput method.

Funding

Flexible Routes to Liquid Fuels from CO2 by Advanced Catalysis and Engineering

Engineering and Physical Sciences Research Council

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History

Email Address of Submitting Author

troy.manning@liverpool.ac.uk

Institution

University of Liverpool

Country

United Kingdom

ORCID For Submitting Author

0000-0002-7624-4306

Declaration of Conflict of Interest

No conflict of interest

Version Notes

version one

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