对苯二甲酸二甲酯催化加氢制1,4-环己烷二甲酸二甲酯的研究  被引量:4

Study on the synthesis of dimethyl 1,4-cyclohexanedicarboxylate by catalytic hydrogenation of dimethyl terephthalate

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作  者:李远华[1] 彭士超[1] 李辉[1] 

机构地区:[1]上海师范大学生命与环境科学学院,上海200234

出  处:《上海师范大学学报(自然科学版)》2016年第6期676-679,共4页Journal of Shanghai Normal University(Natural Sciences)

基  金:国家自然科学基金(21273149)

摘  要:1,4-环己烷二甲醇在高分子工业具有重要的作用,主要用于合成高附加值聚酯产品.在工业上,1,4-环己烷二甲醇主要是由对苯二甲酸二甲酯经两步加氢反应而制得.采用浸渍法制备了Pd/Mg O催化剂,并运用X射线衍射(XRD)、透射电子显微镜(TEM)和扫描电子显微镜(SEM)对其进行了结构表征.以乙酸甲酯作溶剂,将制得的Pd/Mg O用于对苯二甲酸二甲酯催化加氢制1,4-环己烷二甲酸二甲酯的反应.在180℃,4.5 MPa条件下,对苯二甲酸二甲酯转化率为100%,1,4-环己烷二甲酸二甲酯选择性为99%.研究结果表明该催化剂具有良好的应用潜力.In the field of polymer industry, 1 ,4-cyclohexanedimethanol ( CHDM) occupies an important position especially for the synthesis of highly valued polyester products. In industry,CHDM is prepared from dimethyl terephthalate ( DMT) through a two- step hydrogenation process Palladium supported on magnesium oxide (Pd/MgO) was prepared by animpregnation method and was characterized by x-ray diffraction (XRD) ,transmission electron microscope (TEM) and scan electron microscope (SEM) . During the hydrogenation of DMT to synthesize dimethyl 1,4-cyclohexanedicarboxylate ( DMCD) ,the as-prepared Pd/MgO was used as the catalyst with methyl acetate as the solvent. Under optimized reaction conditions ( reaction temperature : 180℃ , reaction pres-sure:4.5MPa) ,the conversion of DMT was 100% and the selectivity of DMCD was 99% . Such a catalyst shows a good potential in industrial applications.

关 键 词:1 4-环己烷二甲酸二甲酯 对苯二甲酸二甲酯 加氢反应 

分 类 号:O643.32[理学—物理化学]

 

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