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Comparison of two palladium catalysts on different supports during hydrogenation
Author(s) -
Cizmeci Melih,
Musavi Anar,
Tekin Aziz,
Kayahan Muammer
Publication year - 2006
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/s11746-006-5163-2
Subject(s) - palladium , selectivity , catalysis , chemistry , reaction rate , soybean oil , reaction rate constant , materials science , nuclear chemistry , inorganic chemistry , kinetics , organic chemistry , physics , food science , quantum mechanics
Soybean oil was hydrogenated using two different palladium‐based catalysts, 5% palladium on carbon (Pd/C) and 10% palladium on alumina (Pd/A), at various ratios in a 4‐L reactor under constant conditions (165°C, 2 bar H 2 , and 500 rpm stirring rate). Reaction rate, trans isomer formation, selectivity ratios, and melting behaviors of the samples were monitored. Activity of Pd/C was about 10 times higher than that of Pd/A, and the reaction rate showed a strong dependency on the support material. Increases in the concentrations of both Pd catalysts did not have considerable effect on trans formation, which is slightly dependent on support material. Oleate selectivity ( S 21 ) for all runs varied between 2.48 and 30.34, and type of support material did not have an effect on selectivity. Melting behaviors of the samples were mainly dependent on reaction rates.