硫酸改性金属氧化物超强酸的合成及其催化麻疯树籽油酯交换反应性能的研究  

Synthesis of Sulfated Metal Oxides and Its Catalytic Performance for Transesterification of Jatropha Curcas Seed Oil

作　　者：冯文平 罗明聪 娄金东 梁晓玲 FENG Wen-ping;LUO Ming-cong;LOU Jin-dong;LIANG Xiao-ling(China bluestar chonfar enginerring and technology Co.,Ltd.,Changsha 410116,China)

机构地区：[1]中蓝长化工程科技有限公司,湖南长沙410116

出　　处：《精细化工中间体》2021年第4期40-44,53,共6页Fine Chemical Intermediates

摘　　要：基于H_(2)SO_(4)溶液浸渍法改性氢氧化钛(Ti(OH)_(4))和氢氧化锆(Zr(OH)_(4))制备了SO_(4)^(2-)/TiO_(2)和SO_(4)^(2-)/ZrO_(2)固体超强酸催化剂。利用XRD、N_(2)-物理吸附、FT-IR和NH3-TPD技术对催化剂的微观结构及酸性质进行了表征。并将其用于麻疯树籽油酯交换生产生物柴油反应,测试其催化活性和产物选择性。结果表明,硫酸改性后的催化剂表现出更高的催化活性,主要归功于催化剂的强酸性和大比表面积促进了酯交换反应。Firstly,SO_(4)^(2-)/TiO_(2) and SO_(4)^(2-)/ZrO_(2) solid superacid catalysts were synthesized through the Ti(OH)_(4) and Zr(OH)_(4) impregnated in H_(2)SO_(4) solution,respectively.Secondly,the microstructure and acid properties of the catalysts were characterized by XRD,N_(2) physical adsorption,FT-IR and NH3-TPD.Furthermore,the catalysts were used in the transesterification of Jatropha curcas seed oil(JO) to produce biodiesel,and its catalytic activity and biodiesel selectivity were analyzed.The results showed that the sulfated metal oxides catalysts exhibited better catalytic activity owing to the strong acidity and large specific surface area,which could promote the transesterification of JO.

关 键 词：硫酸改性金属氧化物 超强酸 麻疯树籽油 酯交换 生物柴油 

分 类 号：TE667[石油与天然气工程—油气加工工程] TQ426[化学工程]