Abstract
Sulfur is a severe poison for most metal catalysts because sulfur compounds are strongly chemisorbed on the metal surface. The catalysts may deactivate as a result of small impurities of sulfur compounds, present in the reactants or incorporated in the catalyst during its preparation. Sulfur is the most severe poison for nickel catalysts used in steam reforming of hydrocarbons or for methanation of synthesis gas because sulfur will always be present in the feedstock. Hence the feedstock is purified by absorption over active carbon or activated zinc oxide. Organic sulfur compounds (mercaptans, thiophenes, etc.) present in the feed must be hydrogenated over a sulfided Co-Mo catalyst before absorption of the hydrogen sulfide in zinc oxide. The steam reforming and methanation reactions have been described elsewhere in this course (1).
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© 1982 Martinus Nijhoff Publishers, The Hague
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Rostrup-Nielsen, J.R. (1982). Sulfur Poisoning. In: Figueiredo, J.L. (eds) Progress in Catalyst Deactivation. NATO Advanced Study Institutes Series, vol 54. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7597-2_11
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DOI: https://doi.org/10.1007/978-94-009-7597-2_11
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