探讨油脂在亚临界水中水解反应的影响因素和反应动力学。以橡胶籽油为原料,在间歇式高温高压反应釜中进行水解反应,试验结果表明,在水与橡胶籽油体积比为3∶1(摩尔比为162∶1),反应温度280℃,压力15 MPa,反应时间40 m in时,橡胶籽油水...探讨油脂在亚临界水中水解反应的影响因素和反应动力学。以橡胶籽油为原料,在间歇式高温高压反应釜中进行水解反应,试验结果表明,在水与橡胶籽油体积比为3∶1(摩尔比为162∶1),反应温度280℃,压力15 MPa,反应时间40 m in时,橡胶籽油水解为脂肪酸的转化率可达96.2%;动力学计算表明,橡胶籽油在亚临界水中水解反应级数为1.4,反应活化能为43.5 kJ/mol。该研究为超临界二步法制备生物柴油的水解反应的动力学提供了理论基础。展开更多
以橡胶籽油为原料,碱异构化合成共轭亚油酸(CLA),采用单因素实验探讨了反应温度、反应时间、醇油比、催化剂KOH的用量等因素对CLA转化率的影响,同时采用响应曲面法进行优化,结果表明:橡胶籽油碱异构制备共轭亚油酸的最佳异构条件是:采...以橡胶籽油为原料,碱异构化合成共轭亚油酸(CLA),采用单因素实验探讨了反应温度、反应时间、醇油比、催化剂KOH的用量等因素对CLA转化率的影响,同时采用响应曲面法进行优化,结果表明:橡胶籽油碱异构制备共轭亚油酸的最佳异构条件是:采用聚乙二醇-400为溶剂,KOH为催化剂,当反应温度148℃,反应时间2.6 h,醇油比:18∶1 m L/g,催化剂的用量6%,在此工艺条件下橡胶籽油共轭亚油酸的转化率为83.04%。展开更多
The natural rubber seed oil was extracted by The supercritical fluid CO2 technology. The contents of fatty acids in The natural rubber seed oil were determined by means of GC normalization. Its unknown components were...The natural rubber seed oil was extracted by The supercritical fluid CO2 technology. The contents of fatty acids in The natural rubber seed oil were determined by means of GC normalization. Its unknown components were tested and identified by The method of GC/MS. The rubber seed oil extracted by The Supercritical Fluid CO2(SFE- CO2) was compared with The one extracted by The method of Soxhlet. The results show that 12 kinds of fatty acids in The rubber seed were determined, and The contens of α-18:3 and γ-18.3, which have great value, were respectively 18.74% and 0.70%. The rubber seed oil extracted by SFE- CO2 has no organic solvent, and are nonpoisonous and harmless. Its GC graph is plain and has less miscellaneous peaks and The contents of γ-18:3 is 4 times more than that extracted by The method of Soxhlet. In addition, The fatty acid contents of ≥ 3 alkene bonds were significantly decreased after The sample of The fatty acid methyl ester was placed in a refrigerator more than 3 months.展开更多
The combined fatliquoring agent based on rubber-seed oil was synthesized through the reactions of amidation,esterification and sulfonation accordint to the atom economy rule.Its initial application was finished.And th...The combined fatliquoring agent based on rubber-seed oil was synthesized through the reactions of amidation,esterification and sulfonation accordint to the atom economy rule.Its initial application was finished.And the application yield was satisfactory.Attention was paid to the sulfonation process.At the same time the properties and function of the product were discussed.展开更多
文摘探讨油脂在亚临界水中水解反应的影响因素和反应动力学。以橡胶籽油为原料,在间歇式高温高压反应釜中进行水解反应,试验结果表明,在水与橡胶籽油体积比为3∶1(摩尔比为162∶1),反应温度280℃,压力15 MPa,反应时间40 m in时,橡胶籽油水解为脂肪酸的转化率可达96.2%;动力学计算表明,橡胶籽油在亚临界水中水解反应级数为1.4,反应活化能为43.5 kJ/mol。该研究为超临界二步法制备生物柴油的水解反应的动力学提供了理论基础。
文摘以橡胶籽油为原料,碱异构化合成共轭亚油酸(CLA),采用单因素实验探讨了反应温度、反应时间、醇油比、催化剂KOH的用量等因素对CLA转化率的影响,同时采用响应曲面法进行优化,结果表明:橡胶籽油碱异构制备共轭亚油酸的最佳异构条件是:采用聚乙二醇-400为溶剂,KOH为催化剂,当反应温度148℃,反应时间2.6 h,醇油比:18∶1 m L/g,催化剂的用量6%,在此工艺条件下橡胶籽油共轭亚油酸的转化率为83.04%。
文摘The natural rubber seed oil was extracted by The supercritical fluid CO2 technology. The contents of fatty acids in The natural rubber seed oil were determined by means of GC normalization. Its unknown components were tested and identified by The method of GC/MS. The rubber seed oil extracted by The Supercritical Fluid CO2(SFE- CO2) was compared with The one extracted by The method of Soxhlet. The results show that 12 kinds of fatty acids in The rubber seed were determined, and The contens of α-18:3 and γ-18.3, which have great value, were respectively 18.74% and 0.70%. The rubber seed oil extracted by SFE- CO2 has no organic solvent, and are nonpoisonous and harmless. Its GC graph is plain and has less miscellaneous peaks and The contents of γ-18:3 is 4 times more than that extracted by The method of Soxhlet. In addition, The fatty acid contents of ≥ 3 alkene bonds were significantly decreased after The sample of The fatty acid methyl ester was placed in a refrigerator more than 3 months.
文摘The combined fatliquoring agent based on rubber-seed oil was synthesized through the reactions of amidation,esterification and sulfonation accordint to the atom economy rule.Its initial application was finished.And the application yield was satisfactory.Attention was paid to the sulfonation process.At the same time the properties and function of the product were discussed.