高活性非食用油脂和脂肪酸甲酯加氢负载型 铜镍.pdfVIP

《化学通报》在线预览版 高活性非食用油脂和脂肪酸甲酯加氢负载型 铜镍二元催化剂的研究 程永建 袁鹏 王争 朱微娜 孙海杰 刘寿长* (郑州大学化学系 郑州 450052) 摘要 采用并流沉淀法制备了Cu-Ni/SiO2二元催化剂，研究了影响催化剂活性的主要因素：Cu/Ni 比，SiO 加入量，焙烧温度和焙烧时间，得到最佳制备条件：Cu/Ni ＝1/2.5~1/2，(Cu+Ni)/SiO ＝ 2 2 13/7~3/1，焙烧温度350℃，焙烧时间3h 。在(Cu+Ni):SiO2 ＝3:1、Cu:Ni ＝1:2.5时，不经陈化，可以 制得高活性低金属残存量的Cu-Ni/SiO 二元催化剂。催化剂用量为原料脂肪酸甲酯质量的0.5%， 2 氢压1MPa左右，反应30min，脂肪酸甲酯碘值可从100以上降到1左右。加氢产物为白色固体，肉 眼观察不到金属离子的残存。原料和氢化脂肪酸甲酯的红外光谱图表明，该催化剂没有使碳碳双 键生成反式异构体，并且具有很好的选择性和稳定性。 关键词 并流沉淀法 Cu-Ni/SiO2二元催化剂 SiO2 脂肪酸加氢 Research on Cu-Ni/SiO Bibasic Catalyst for Hydrogenation 2 of Fatty Acids Methyl Ester and Oils Cheng Yongjian, Yuan Peng, Wang Zheng, Zhu Weina, Sun Haijie, Liu Shouchang* (Department of chemistry,Zhengzhou University, Zhengzhou 450052) Abstract The Cu-Ni/SiO2 bibasic catalyst was prepared by paralled flow precipitation method.The main factors effecting activity were the Cu-Ni composition, the (Cu+Ni)-SiO2 composition, the calcinations temperature and the calcinations time. The optimal preparation conditions were Cu/Ni=1/2.5~1/2, (Cu+Ni)/SiO =13/7~3/1, 350 ℃, 3h. At Cu:Ni=1:2.5, (Cu+Ni)/SiO =3:1, 350 ℃, 3h 2 2 and without aging, the metal residues were very low. Besides the conditions presented over, hydrogen gas pressure 1MPa or so, adding quantity of the catalyst 0.5% of fatty acid methyl esters, reaction time :about 30min, the I.V. of fatty acid