脱水蓖麻油酸制备新工艺研究
|
摘要
以蓖麻油酸为原料,在高温下经减压蒸馏制得脱水蓖麻油酸(DCO-FA),通过单因素试验探究不同条件下产品的收率。结果表明:制备DCO-FA的最佳工艺条件为4分子筛作催化剂,用量为2%(以蓖麻油酸的质量计),抗氧化剂1024作阻聚剂,用量为1%(以蓖麻油酸的质量计),反应温度300℃。在最佳工艺条件下,可以制得无色透明、黏度低的产品,收率达93. 77%。采用酸价、羟值、红外光谱法、紫外可见分光光度法对产品进行表征,证明反应脱水成功且产品的共轭率可达58. 49%。
Dehydrated ricinoleic acid( DCO-FA) was obtained by distillation under reduced pressure at high temperature using ricinoleic acid as raw material. The yield of product under different preparation conditions were studied through single factor experiment. The results showed that the optimal preparation conditions of DCO-FA were obtained as follows: dosage of 4 molecular sieves used as catalyst 2%( based on the ricinoleic acid mass),dosage of antioxidant 1024 used as polymerization inhibitor 1%( based on the ricinoleic acid mass),reaction temperature 300 ℃. Under the optimal conditions,the product was colorless and transparent with low viscosity,and the yield reached 93. 77%. The product was characterized by acid value,hydroxyl value,infrared spectroscopy,and ultraviolet spectrophotometry. The analysis results proved that the dehydration reaction was successful,and the conjugation rate of the product was up to 58. 49%.
Dehydrated ricinoleic acid( DCO-FA) was obtained by distillation under reduced pressure at high temperature using ricinoleic acid as raw material. The yield of product under different preparation conditions were studied through single factor experiment. The results showed that the optimal preparation conditions of DCO-FA were obtained as follows: dosage of 4 molecular sieves used as catalyst 2%( based on the ricinoleic acid mass),dosage of antioxidant 1024 used as polymerization inhibitor 1%( based on the ricinoleic acid mass),reaction temperature 300 ℃. Under the optimal conditions,the product was colorless and transparent with low viscosity,and the yield reached 93. 77%. The product was characterized by acid value,hydroxyl value,infrared spectroscopy,and ultraviolet spectrophotometry. The analysis results proved that the dehydration reaction was successful,and the conjugation rate of the product was up to 58. 49%.
引文
[1]王明晶,李永文,张新宇,等.水性丙烯酸改性醇酸防腐涂料的研制[J].中国涂料,2017,32(3):57-60.
[2]杨建柱,黄佩坚,李国荣,等.蓖麻油及其衍生物在涂料中的应用进展[J].化工新型材料,2014,42(3):183-185.
[3]王洪宇,刘群元.蓖麻油及其衍生物在涂料中的应用[J].涂料工业,2004,34(3):51-55.
[4]LEE K N,KRITCHEVSKY D,PARIZA M W.Conjugated linoleic acid and atheroclerosis in rabbits[J].Atheroclerosis,1994,108:19-25.
[5]NICOLOSI R J,ROGER E J,KRITCHEVSKY D,et al.Dietary conjugated linoleic acid reduces plasma lipoproteins and early aortic atherosclerosis in hypercholesterolemic hamsters[J].Artery,1997,22(5):266-277.
[6]BERDEAUX O,CHRISTIE W W,GUNSTONE F D,et al.Large-scale synthesis of methyl cis-9,trans-11-octadecadienoate from methyl ricinoleate[J].J Am Oil Chem Soc,1997,74:1011-1015.
[7]YANG L,HUANG Y,WANG H Q,et al.Production of conjugated linoleic acids through KOH-catalyzed dehydration of ricinoleic acid[J].Chem Phys Lipids,2002,119:23-31.
[8]VILLENEUVE P,LAGO R,BAROUH N,et al.Production of conjugated linoleic acid isomers by dehydration and isomerization of castor bean oil[J].J Am Oil Chem Soc,2005,82(42):261-269.
[9]严翠霞,丁建飞,马田林,等.蓖麻油衍生物及脱水蓖麻油的研究进展[J].化工时刊,2017,31(4):22-26.
[10]晁建平,李响敏,陈志玲,等.蓖麻酸(酯)合成共轭亚油酸研究进展[J].中国油脂,2009,34(7):34-37.
[11]SENIHA G F.Castor oil dehydration kinetics[J].J Am Oil Chem Soc,1997,74(4):409-412.
[12]周凌华,张灏,郑小平,等.共轭亚油酸紫外检测方法的研究[J].乳业科学与技术,2007,30(5):267-270.
[13]阎明久.关于醋酐-吡啶法测定羟值的探讨与改进[J].涂料工业,1980(5):25-26,58.
[14]赵国志,赵锦毅,赵越.脱水蓖麻油的制取与应用[J].中国油脂,1999,24(1):35-37.
[2]杨建柱,黄佩坚,李国荣,等.蓖麻油及其衍生物在涂料中的应用进展[J].化工新型材料,2014,42(3):183-185.
[3]王洪宇,刘群元.蓖麻油及其衍生物在涂料中的应用[J].涂料工业,2004,34(3):51-55.
[4]LEE K N,KRITCHEVSKY D,PARIZA M W.Conjugated linoleic acid and atheroclerosis in rabbits[J].Atheroclerosis,1994,108:19-25.
[5]NICOLOSI R J,ROGER E J,KRITCHEVSKY D,et al.Dietary conjugated linoleic acid reduces plasma lipoproteins and early aortic atherosclerosis in hypercholesterolemic hamsters[J].Artery,1997,22(5):266-277.
[6]BERDEAUX O,CHRISTIE W W,GUNSTONE F D,et al.Large-scale synthesis of methyl cis-9,trans-11-octadecadienoate from methyl ricinoleate[J].J Am Oil Chem Soc,1997,74:1011-1015.
[7]YANG L,HUANG Y,WANG H Q,et al.Production of conjugated linoleic acids through KOH-catalyzed dehydration of ricinoleic acid[J].Chem Phys Lipids,2002,119:23-31.
[8]VILLENEUVE P,LAGO R,BAROUH N,et al.Production of conjugated linoleic acid isomers by dehydration and isomerization of castor bean oil[J].J Am Oil Chem Soc,2005,82(42):261-269.
[9]严翠霞,丁建飞,马田林,等.蓖麻油衍生物及脱水蓖麻油的研究进展[J].化工时刊,2017,31(4):22-26.
[10]晁建平,李响敏,陈志玲,等.蓖麻酸(酯)合成共轭亚油酸研究进展[J].中国油脂,2009,34(7):34-37.
[11]SENIHA G F.Castor oil dehydration kinetics[J].J Am Oil Chem Soc,1997,74(4):409-412.
[12]周凌华,张灏,郑小平,等.共轭亚油酸紫外检测方法的研究[J].乳业科学与技术,2007,30(5):267-270.
[13]阎明久.关于醋酐-吡啶法测定羟值的探讨与改进[J].涂料工业,1980(5):25-26,58.
[14]赵国志,赵锦毅,赵越.脱水蓖麻油的制取与应用[J].中国油脂,1999,24(1):35-37.