改性固体超强酸催化合成原油降凝剂单体甲基丙烯酸高级酯  

Synthesis of Crude Oil Pour Point Depressants Monomer Methylacrylic Acid High Carbon Ester Catalyzed by SO_4^(2-)/La_2O_3-ZrO_2-HZSM-5

作　　者：陈淑芬[1] 张春兰[1] 杨兴锴[1] 甘黎明[1] 杨智[1] 

机构地区：[1]兰州石化职业技术学院石油化学工程系,甘肃兰州730060

出　　处：《兰州石化职业技术学院学报》2012年第2期1-3,共3页Journal of Lanzhou Petrochemical Polytechnic

基　　金：甘肃省科学技术厅基金攻关项目(2GS035-A52-008-04);甘肃省教育厅科研资助项目(0414-05)

摘　　要：首次将稀土元素镧改性并以HZSM-5分子筛担载制备的固体超强酸催化剂SO24-/ZrO2/La2O3-HZSM-5(SZLH),用于合成原油降凝剂单体甲基丙烯酸高级酯。合成了3种甲基丙烯酸酯,考察了催化剂用量、带水剂种类、醇酸比和反应时间等因素对酯化率的影响。结果表明,在最佳工艺条件下,酯化率可达95.6%以上。酯化产物经红外光谱测定,证明为甲基丙烯酸高级酯,且该催化剂具有良好的重复使用性。The solid superacid SO4 2-/ZrO2//La2 O3 - HZSM - 5 （ SZLH ） was prepared by modified rare earth element La and carried molecular sieve HZSM -5 to SO2-/ZrO2. SZLH was for the first time used in catalytic synthesis of Crude oil pour point depressants monomer - methylacrylie acid highcarbon esters. 3 kinds of methylacrylic acid high carbon esters were synthesized. The effects of catalyst amount, kinds of dehydrant, acid/alcohol molar rate, reaction time were inspected. The results indicated that the yield of methylacrylic acid high carbon esters were excess of 95.6% on optimum conditions. The products were tested by IR spectroscopy. And the catalyst was reused.

关 键 词：SO24-/La2O3-ZrO2-HZSM-5 甲基丙烯酸 高碳醇 甲基丙烯酸高级酯 酯化 

分 类 号：TQ225.24[化学工程—有机化工] TE869[石油与天然气工程—油气储运工程]