采用浸渍煅烧法制备了改性活性炭负载复合金属催化剂,考察了活性炭改性条件对合成三联苯的影响。结果表明,活性炭载体经10%磷酸改性、添加10%~35%载体质量的CuFeZn复合氧化物,在反应温度为85℃、70℃下老化48 h、550℃煅烧4 h后制得催化剂,研磨颗粒至60目。该催化剂用于三联苯合成可显著提高其选择性,减少四联苯、五联苯等副产物的产生,提高了以苯为原料合成氢化三联苯导热油的纯度和产品性能。

A modified activated carbon supported composite metal catalyst are prepared via immersion calcination method.The effect of the modification conditions of activated carbon on the synthesis of terphenyl is evaluated.The types of terphenyl,hydrogenated terphenyl and impurities are detected by means of gas chromatography,and the catalytic effect is evaluated.It is indicated by the results that the activated carbon carrier is modified by 10% phosphoric acid,then added with 10%-35% of metal composite oxide,and has been aged at 85℃,70℃ for 48 h,and calcined at 550℃ for 4 h to form the catalyst that is ground into 60 mesh particles for the synthesis of terphenyl.The catalyst can significantly improve the selectivity of terphenyl and reduce the production of byproducts such as tetrabyphenyls and pentabyphenyls.The purity and properties of the heat conduction oil synthesized from benzene are improved.

刘俊成(1971-),男,本科,高级工程师,研究方向为有机合成及应用技术研究,jd13930063180@163.com;康莲薇(1965-),女,硕士,教授,研究方向为分析化学,kanglianwei@126.com。