Docosanoic Acid → Silver behenate

Participants

Reaction Conditions

Reaction Steps

First, deionized water, a 10 mass % solution of dodecylthiopolyacrylamide surfactant (72 g) and the purified behenic acid described above (in an amount corresponding to 0.137 mol) were charged in a reactor. The content in the reactor was stirred at 150 rpm, and heated to 70° C. during which a 10 mass % KOH solution (70.6 g) was charged in a reactor. Then, the content in the reactor was heated to 80° C. and kept for 30 min till it turns into a cloudy solution. Then, the reaction mixture was cooled to 70° C. and a silver nitrate solution (50 mass % solution, 21.3 g) was added to the reactor over 30 min while controlling the addition rate. Then, the content in the reactor was kept at the reaction temperature for 30 min, cooled to room temperature and then subjected to decantation. As a result, a dispersion of nano-particles of silver behenate having a median particle diameter of 150 nm was obtained (with a solid content of 3%).

Provenance & Evidence