The hydrogenation of fatty oils with palladium catalyst. III. Hydrogenation of fatty oils for shortening stock

Abstract

SummaryPalladium‐on‐carbon catalysts are exceedingly active for the hydrogenation of natural unsaturated oils when very mild conditions are used. Selectivity is usually good, andtrans content can be adequately controlled by the proper choice of conditions. In the range of operating variables used in this work,trans formation is lessened with increased agitation and pressure, decreased catalyst activity, decreased concentration of metal in oil and on carrier, and with decreased temperature. Some shortening stocks were obtained which have good physical properties, as expressed by their dilatometric curves.

Hydrogenation of natural oils with platinum metal group catalysts

“…At the lowest concentrations the rate is not yet proportional to the amount of metal present. Over the range of metal concentration studied the catalyst functioning rate varied by a factor of 20 (1). By inspection of the data a completely erroneous view of the economics of using palladium will be obtained if superfluous catalyst is used.…”

Kinetic peculiarities of cis/trans methyl oleate formation during hydrogenation of methyl linoleate over Pd/MgO

“…Palladium catalyst was suggested to be more selective than Ni system if the process of hydrogenation proceeds at low temperature and strict control of catalyst texture and hydrogen pressure [19,20]. The kinetics and mechanism of fatty acids esters hydrogenation over Pd catalysts were discussed [21][22][23][24].…”

Palladium‐ catalyzed hydrogenation of soybean oil

“…Palladium is well known to be one of the most selective hydrogenation catalysts when multiple olefinic bonds are concerned, although its ability to catalyze cis-trans isomerization and double-bond migration is also superior to other Group VIII metals (2). Even so, the conditions under which it has been compared with nickel were most unfavorable, and only more recently have other workers investigated palladium catalysts more carefully and observed that they may possess some potential in the selective hydrogenation of triglycerides (3,4).…”