磁稳定床及磁性催化剂的研究进展

对磁稳定床及磁性催化剂在石油化工和生物工程等领域的应用进行了归纳总结。磁稳定床已经应用于催化加氢、烟尘净化、干法选煤、生化分离、固定化生物反应器、细胞培养等过程。与传统工艺相比,磁稳定床兼有固定床和流化床的优点,能强化受传质传热限制的反应过程,提高反应效率,在实际应用中显示出独特的优越性。磁性催化剂的设计与开发是磁稳定床应用的关键,目前磁性催化剂以包覆型催化剂为主,其共同特点是具有适宜的磁性和低温反应活性,利于反应操作。磁稳定床及其磁性催化剂的研究开发是催化剂工业发展的一个新方向。

Progress in magnetically stabilized bed and magnetic catalyst

The research progress in the application of magnetically stabilized bed(MSB) in the fields of petrochemical and biology was reviewed.MSB is used in catalytic hydrogenation,dust removal,dry coal separation,biochemical separation,immobilized bioreactors and culture of cells,etc.Compared with the conventional process,this novel reactor combines the advantages of fixed bed reactor and fluidized bed reactor,which can intensify the internal mass and heat transfer and improve the reaction efficiency.The design of magnetic catalyst is the key to the application of the MSB.So far,the magnetic catalysts in MSB are more commonly in core-shell structure with the magnetic core.All these catalysts have excellent magnetic properties and good catalytic performance at lower temperature.The research and development of MSB and magnetic catalyst are promising in catalyst industry.