超声波辐射氟化钾/碳酸钾/三氧化二铝催化合成呋喃丙烯酸的工艺研究  

STUDY ON THE SYNTHESIS OFα-FURYLACRYLIC ACID CATALYZED BY KF/K_2CO_3/Al_2O_3 UNDER ULTRASONIC IRRADIATION

作　　者：岳金方[1] 罗志臣[1] 王晨[1] 林梦君 

机构地区：[1]扬州工业职业技术学院化学工程学院,江苏扬州225127

出　　处：《精细石油化工》2016年第6期44-47,共4页Speciality Petrochemicals

基　　金：江苏省第四期"333高层次人才培养工程"第三层次培养对象(苏人才办2011第8号)资助课题;扬州工业职业技术学院重点科研课题资助项目(2014SKJ01)

摘　　要：在超声波辐射下,以KF/K_2CO_3/γ-Al_2O_3为催化剂,α-呋喃甲醛与丙二酸为原料,经Knoevenagel法合成了α-呋喃丙烯酸,用IR光谱和元素分析进行了表征。考察了催化剂用量、α-呋喃甲醛与丙二酸摩尔比、超声波辐射功率与辐射时间等因素对α-呋喃丙烯酸收率的影响。结果表明,在超声波辐射下,KF/K_2CO_3/γ-Al_2O_3具有良好的催化活性,较佳反应条件为:α-呋喃甲醛用量为12.5mL(0.15mol),n(α-呋喃甲醛)∶n(丙二酸)=1∶1.20,KF/K_2CO_3/Al_2O_3用量1.5g(KF含量2.805mmol/g),超声波功率120 W,辐射时间25min,产物收率达到95%以上,纯度达到99.75%。α-Furylacrylic acid was prepared by Knoevenagel method which was catalyzed by KF/K_2CO_3/γ-Al_2O_3 under ultrasonic irradiation.IR and elemental analysis were used to characterize the product.The effects of catalyst dosage,molar ratio ofα-furaldehyde and propanedioic acid,ultrasonic radiation power and radiation time on the yield ofα-furylacrylic acid were studied.The results show that KF/K_2CO_3/γ-Al_2O_3 has good catalytic activity under ultrasonic irradiation,the optimum reaction conditions forα-furaldehyde 12.5mL（0.15 mol）,n（α-furaldehyde）∶n（propanedioic acid）=1.00∶1.20,KF/K_2CO_3/Al_2O_3 amount 1.5g（KF＇content is 2.805mmol/g）,ultrasonic power 120 W,ultrasonic irradiation time of 25 min,the yield of cinnamon acid reached more than 95%,purity reached99.75%.

关 键 词：超声波辐射 氟化钾/碳酸钾/三氧化二铝 Α-呋喃丙烯酸 KNOEVENAGEL反应 

分 类 号：TQ251.1[化学工程—有机化工]