食品科学2017，Vol.38Issue(12)：177-183,7.DOI:10.7506/spkx1002-6630-201712027
超临界CO2氢化大豆油工艺优化及动力学分析
Optimization and Kinetics of Hydrogenation of Soybean Oil in Supercritical CO2
摘要
Abstract
In this paper,Ni-Ag/SBA-15 catalyst was used to catalyze the hydrogenation of soybean oil in supercritical CO2.The optimum conditions were determined as follows:CO2 pressure,8.0 MPa;hydrogen partial pressure,3.40 MPa;hydrogenation temperature,100 ℃;the amount of catalyst,0.20％;stirring speed,300 r/min,and hydrogenation time,90 min,giving a product with an iodine value of 86.0 g I2/100 g,and a trans fatty acid (TFA) content of 11.7％.Using hydrogenation kinetic equation and MATLAB software program,the reaction rate and selectivity for supercritical CO2 hydrogenation of soybean oil were investigated.Compared with conventional hydrogenation,the hydrogenation rate in supercritical CO2 was higher,and the hydrogenation selectivity for linolenic acid and linoleic acid were better.At the same time,the TFA and stearic acid contents of hydrogenated soybean oil products were 11.7％ and 9.4％ in supercritical CO2,which were lower than that from conventional hydrogenation.关键词
Ni-Ag/SBA-15/超临界CO2/氢化大豆油/动力学/反应速率常数Key words
Ni-Ag/SBA-15/supercdtical CO2/hydrogenated soybean oil/kinetics/reaction rate constant分类
轻工纺织引用本文复制引用
王文华,任悦,王玉琦,屈岩峰,江连州,于殿宇,王立琦..超临界CO2氢化大豆油工艺优化及动力学分析[J].食品科学,2017,38(12):177-183,7.基金项目
“十三五”国家重点研发计划重点专项(2016YFD0401402) （2016YFD0401402）
国家自然科学基金面上项目(31271886) （31271886）
