Preparation of fatty acid calcium for the feed additive | 饲料添加剂脂肪酸钙的制备
2012
Gong Haipeng, Gansu Agricultural University, Lanzhou (China), College of Science | Yang Xi, Gansu Agricultural University, Lanzhou (China), College of Science | Yang Jitao, Gansu Agricultural University, Lanzhou (China), College of Science
Chinese. 选用普通羊油做原料，采用皂化和复分解法，研究脂肪酸钙的制备方法。结果表明：试验最佳条件为羊油：NaOH:CaCl2=1:0.4:0.3，反应温度85℃，皂化3h，复分解2h，可生成白色粉末状脂肪酸钙；解析其红外谱图发现，2919cm-1和2852cm-1强吸收峰为脂肪链中甲基、亚甲基的C-H伸缩振动峰，1577～1540cm-1区域出现的2个偶合峰归属于羧酸根负离子的伸缩振动峰；化学分析法测定出脂肪酸钙中Ca2＋含量为6.14%。
Show more [+] Less [-]English. Using tallow as material, an protocol for preparation of fatty acid calcium was described. The white powder fatty acid calcium was produced by saponification and metathesis reaction. After a single factor experiment, the optimum reaction condition was confirmed as follows: m tallow : m NaOH : m CaCl2=1:0.4:0.3, reaction temperature 85℃, time of saponification 3h, time of metathesis reaction 2h. The absorption peaks of infrared spectra in 2919、2852 cm-1 were attributable to methyl, methylene of aliphatic chain, the absorption peaks in 1577~1540 cm-1 was attributable to carboxylate anion. Chemical analysis showed that the content of Ca2＋ in fatty acid calcium was 6.14 %.
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