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Non‐traditional three‐phase reactor setup for simultaneous acoustic irradiation and hydrogenation
Author(s) -
Mikkola JyriPekka,
Kubicka David,
Kuusisto Jyrki,
Granholm Nina,
Salmi Tapio,
Holmbom Bjarne
Publication year - 2003
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.739
Subject(s) - xylitol , catalysis , raney nickel , autoclave , xylose , chemistry , irradiation , aqueous solution , batch reactor , sonochemistry , catalytic hydrogenation , chemical engineering , organic chemistry , nuclear chemistry , materials science , fermentation , physics , nuclear physics , engineering
A tailor‐made autoclave setup for simultaneous acoustic irradiation and hydrogenation was used in the hydrogenation of fatty acids and carbohydrates. The aim was not to perform actual sonochemistry but to retard deactivation of the catalyst by means of acoustic irradiation. The catalyst used was a Raney nickel one that tends to deactivate quite rapidly from batch to batch. The results indicated that in the case of the aqueous system (xylose hydrogenation to xylitol) the effect is clear. In the case of the fatty acids one actually observed an enhancement of the reaction rate: with recycled catalyst the second and third batch proceeded somewhat faster than the first one. © 2003 Society of Chemical Industry