【摘要】 以Cu-Zn为催化剂,在正己烷亚临界状态下以脂肪酸甲酯为原料加氢制备脂肪醇。考察了正己烷用量、温度、氢气与原料油体积比对反应的影响,并对Cu-Zn催化剂和Cu-Cr催化剂的催化活性进行了比较。结果表明,在系统压力6.0 MPa,反应温度250℃,空速0.8 h-1,正己烷与脂肪酸甲酯体积比7:1,氢气与原料油体积比250:1的条件下脂肪酸甲脂转化率为99.5%,脂肪醇选择性为99.6%,Cu-Zn催化剂的催化活性和选择性均优于Cu-Cr催化剂。更多还原

【Abstract】 Fatty alcohol was prepared by hydrogenation of fatty acid methyl esters(FAMEs) using Cu-Zn catalyst at subcritical conditions.Effect of hexane dosage,reaction temperature and volume ratio of hydrogen to oil on the reaction were studied,as well as the catalytic activity and selectivity of Cu-Cr catalyst and Cu-Zn catalyst were examined and compared.The conversion of FAMEs achieves 99.5% and the selectivity of fatty alcohol achieves 99.6% when the reaction was conducted under pressure of 6.0 MPa,temperature 250 ℃,space velocity 0.8 h-1,volume ratio of hexane to FAMEs 7:1 and volume ratio of hydrogen to oil 250:1.The experimental results also showed that Cu-Zn catalyst is superior to Cu-Cr catalyst with respect to catalytic activity and selectivity.更多还原