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Hydrogenation of cottonseed oil with reused catalyst
Author(s) -
Albright L. F.,
Win M. M.,
Woods J. M.
Publication year - 1965
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02540103
Subject(s) - catalysis , isomerization , cottonseed oil , catalyst poisoning , selectivity , chemistry , catalyst support , induction period , cottonseed , hydrogen , organic chemistry , chemical engineering , food science , engineering
Abstract Cottonseed oil was hydrogenated using both new (Rufert catalyst flakes) and reused (up to five uses) catalysts at 130舑169C, at a pressure of 45 psig, and with high degrees of agitation. The activity of the catalyst increased initially with use, especially at 130C, but with continued use the activity decreased. The selectivity of the hydrogenation decreased with reuse of the catalyst, especially at lower temp. Isomerization decreased slightly as the catalyst was used only at higher temps. The induction period found with fresh catalyst at 130C was eliminated in runs with second‐ and third‐use catalyst. A small induction period was noted with fifth‐use catalyst. Treatment of once‐use catalyst with air severely reduced the catalyst activity. Steam‐ and vacuum‐treatment of the catalyst resulted in a slightly less active catalyst than a hydrogen‐treated catalyst. None of these treatments significantly affected selectivity or isomerization. Results of this investigation can be explained in large part by the concn of hydrogen absorbed on the catalyst surface.