Raney nickel catalyst of improved stability and reactivity in the hydrogenation of triglycerides

Autor:	H. V. Tɒmer, E. R. Cousins, R. O. Feuge
Rok vydání:	1964
Předmět:	inorganic chemicals Ethanol General Chemical Engineering Organic Chemistry Alloy Acetaldehyde chemistry.chemical_element engineering.material Raney nickel Catalysis chemistry.chemical_compound Acetic acid Nickel chemistry engineering Organic chemistry Reactivity (chemistry)
Zdroj:	Journal of the American Oil Chemists' Society. 41:212-214
ISSN:	0003-021X
DOI:	10.1007/bf03024651
Popis:	The degree of activity of Raney nickel catalysts in the hydrogenation of triglycerides has been found to vary considerably with and to depend upon unknown factors in the original alloy. Highly active preparations of Raney nickel rapidly lost their activity when stored in absolute ethanol due to the formation of acetaldehyde. Loss of activity was associated with the amount of residual aluminum in the catalyst. The nickel was found to dissolve to some extent in the acetal-dehyde-ethanol solution. Catalysts deactivated by acetaldehyde could be reactivated to a greater degree of activity than that possessed originally by treating with acetic acid. The activity of the original Raney nickel catalyst was preserved to a greater extent by storage in dioxane instead of ethanol.
Databáze:	OpenAIRE
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