Nickel-catalyzed hydrogenation: a study of the poisoning effect of halogen-containing compounds

The poisoning effect of various halogen compounds on a nickel‐based hydrogenation catalyst has been investigated. While alkyl monochlorides did not affect the catalyst activity, alkyl monobromide and‐iodide had a strong poisonous effect. Vicinal dichlorides, 1,1‐dichlorides, and HC1 also poisoned th...

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Bibliographic Details
Published inJournal of the American Oil Chemists' Society Vol. 53; no. 7; pp. 506 - 510
Main Authors Mork, P.C, Norgard, D
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.01.1976
Subjects
agricultural products
consumer education
consumer protection
consumer science
human nutrition
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Summary:The poisoning effect of various halogen compounds on a nickel‐based hydrogenation catalyst has been investigated. While alkyl monochlorides did not affect the catalyst activity, alkyl monobromide and‐iodide had a strong poisonous effect. Vicinal dichlorides, 1,1‐dichlorides, and HC1 also poisoned the catalyst. It is shown that with chlorine containing compounds, the poisoning mechanism involves a fission of the carbon‐chlorine bond with the formation of HC1, while bromine and iodine compounds adsorb to the catalyst surface as such in a simple equilibrium reaction. A mackerel oil previously shown to exhibit three kinetically distinguishable poisoning effects has been further examined, and it is shown that its content of halogens can probably account for the observed poisoning pattern.
ISSN:0003-021X
1558-9331
DOI:10.1007/BF02636824