These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
Preprints are manuscripts made publicly available before they have been submitted for formal peer review and publication. They might contain new research findings or data. Preprints can be a draft or final version of an author's research but must not have been accepted for publication at the time of submission.
submitted on 09.09.2020 and posted on 10.09.2020by 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.