Studies on Synthesis of Fatty Acid Derivatives by Flow Method. II.
Dimerization of Tall Oil Fatty Acids and Its By-products
1978 年 27 巻 4 号 p. 207-213
詳細
1978 年 27 巻 4 号 p. 207-213
The catalytic dimerization reaction of tall oil fatty acids by flow method was investigated. Tall oil fatty acids were found to be dimerized fairly good yield by continuously passing over a catalyst having phosphoric acid deposited on a high surface-area synthetic silica-alumina contained 70% of silica and 29% of alumina. From the long run experiment of dimerization of tall oil fatty acids, it is also seen that the activity of the catalyst is maintained even after the total amount of fatty acid reached 1.5l flow through the 25g catalyst bed.
Moreover, the unsaponifiable matters in monomer fraction produced together with the dimerization reaction, were experimented in detail and noticed to be almost hydro-carbons such as parafines and olefines, and also to be straight-chain 2-ketone compounds and cyclic ketone compounds of the 5-and 6-membered ring.
