The hydrogenation of fatty oils with palladium catalyst. I. Hydrogenation of castor oil

Abstract

Summary A good quality of castor wax was prepared in the laboratory at 100°C. and 45 p.s.i.g., using a modified palladium catalyst. The product obtained had an iodine value of 4, a hydroxy value of 145, and acid value of 1.8, and a capillary melting point of 86°.

Green waxes, adhesives and lubricants

“…Vegetable oil-based waxes are mainly obtained by partially or fully hydrogenating vegetable R e t r a c t e d oil (PHVO or FHVO). For example, castor wax is produced by the hydrogenation of pure castor oil with nickel catalyst (Zajcew 1958); partially hydrogenated soybean oil gives soy wax (Frankel et al 1967); alcoholysized palm oil gives palm wax (Hassan et al 2004); and jojoba wax is prepared by the hydrogenation or interesterification of jojoba oil (Miwa 1972). Some vegetable oils, such as sunflower oil (Carelli et al 2002), canola oil (Hu et al 1993) and rice bran oil (Mezouari et al 2006), contain waxes that are undesirable in the edible oil and are therefore removed during the purification process.…”

The hydrogenation of fatty oils with palladium catalyst. IV. Pilot‐plant preparation of shortening stocks

“…Catalysts F and G were 5% and 2% palladium on carbon powder, respectively. The preparation of the catalysts was described in the first paper of this series (2). The refined, starting soybean oil had an iodine number of 127; the 70/30 mixture of soybean and cottonseed had an iodine number of 120.…”

Reactions of the Hydrocarbon Chain of Fatty Acids.

“…(215), with Raney nickel in ethanol at room temperature and 40 p.s.i. (507), or with 1 per cent palladium on charcoal modified with silver and bismuth at 100°and 45 p.s.i (600)…”