氧化石墨烯修饰的碳纳米管负载Ni-Pd双金属催化聚苯乙烯加氢反应研究  

Hydrogenation of polystyrene over Ni-Pd bimetallic catalyst supported by graphene oxide modified carbon nanotubes

作　　者：石优 刘平[1] 钱俊峰[1] 刘振宇[2] 孙中华 何明阳[1] SHI You;LIU Ping;QIAN Jun-feng;LIU Zhen-yu;SUN Zhong-hua;HE Ming-yang(Jiangsu Key Laboratory of Green Catalytic Materials and Technology,School of Petrochemical Engineering,Changzhou 213100,China;Sinopec Maoming Petrochemical Company,Maoming 525000,China)

机构地区：[1]江苏省绿色催化材料与技术重点实验室,常州大学石油化工学院,江苏常州213100 [2]中国石油化工股份有限公司茂名分公司,广东茂名525000

出　　处：《现代化工》2024年第10期144-149,155,共7页Modern Chemical Industry

基　　金：江苏省高等学校科学研究重大项目(23KJA530001)。

摘　　要：聚苯乙烯(PS)性脆、玻璃化温度不高、抗冲击性不足等缺陷限制了其应用领域。通过苯环加氢可以有效改善PS的性能缺陷,通过氧化石墨烯(GO)修饰的碳纳米管(CNT)负载Ni-Pd双金属制备加氢催化剂可以用于PS的加氢反应。结果表明,GO修饰的CNT作载体的Ni-Pd双金属催化剂具有较高的催化活性和稳定性;在催化剂质量分数为7.5%、反应温度为153℃、反应压力为5.4 MPa、反应时间为6.2 h的条件下,PS转化率大于99%,加氢产物的链长保留率达90%。加氢产物的力学性能、玻璃化温度得到显著提升,且密度和吸水率更低。Polystyrene(PS)has shortcomings such as brittleness,low glass transition temperature,and insufficient impact resistance,which limit its application areas.The hydrogenation of benzene ring in PS can effectively improve its performance.A hydrogenation catalyst for PS hydrogenation reaction can be prepared through loading Ni-Pd bimetallic materials on graphene oxide(GO)modified carbon nanotubes(CNTs).Results indicate that GO modified CNTs loaded Ni-Pd bimetallic catalyst exhibits high catalytic activity and stability.Under the reaction conditions that mass fraction of catalyst is 7.5%,reaction temperature is 153℃,reaction pressure is 5.4 MPa,and the reaction lasts for 6.2 h,the conversion of PS exceeds 99%,and the chain length retention rate of the hydrogenated PS reaches 90%.The hydrogenated PS has an improved mechanical property,a higher glass transition temperature,lower density and lower water absorption rate.

关 键 词：聚苯乙烯 催化加氢 聚环己烷基乙烯 石墨烯 碳纳米管 PD 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]