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Title:
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Steam reforming of commercial ultra-low sulphur diesel
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Author(s):
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Published by:
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Publication date:
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ECN
Biomass, Coal and Environmental Research
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2-5-2011
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ECN report number:
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Document type:
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ECN-V--11-006
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Article
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Number of pages:
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Full text:
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9
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Download PDF
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Published in: Journal of Power Sources (Elsevier), , 2011, Vol.196, p.5928-5935.
Abstract:
Two main routes for small-scale diesel steam reforming exist: low-temperature pre-reforming followed
by well-established methane steam reforming on the one hand and direct steam reforming on the other
hand. Tests with commercial catalysts and commercially obtained diesel fuels are presented for both
processes. The fuels contained up to 6.5ppmw sulphur and up to 4.5 vol.% of biomass-derived fatty acid
methyl ester (FAME). Pre-reforming sulphur-free diesel at around 475 ?C has been tested with a commercial
nickel catalyst for 118 h without observing catalyst deactivation, at steam-to-carbon ratios as
low as 2.6. Direct steam reforming at temperatures up to 800 ?C has been tested with a commercial
precious metal catalyst for a total of 1190 h with two catalyst batches at steam-to-carbon ratios as low
as 2.5. Deactivation was neither observed with lower steam-to-carbon ratios nor for increasing sulphur
concentration. The importance of good fuel evaporation and mixing for correct testing of catalysts is
illustrated. Diesel containing biodiesel components resulted in poor spray quality, hence poor mixing
and evaporation upstream, eventually causing decreasing catalyst performance. The feasibility of direct
high temperature steam reforming of commercial low-sulphur diesel has been demonstrated.
© 2011 Elsevier B.V. All rights reserved.
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