| Electrospinning technology has recently created high-potential applications in the largescale manufacturing of one-dimensional nano-catalysis functional materials.Electrospinning technology has been gradually applied to prepare nitrogen-doped carbon nanofibers coated with metal nanoparticles due to its short preparation cycle,simple method,and designability.Carbon nanofibers coated with metal nanoparticles doped with nitrogen are excellent catalysts.Tetrahydroquinoline is a vital nitrogen heterocyclic and occupies an important position in biology and agricultural chemistry.However,in the quinoline reaction,the selectivity of1,2,3,4-tetrahydroquinoline has always been a complex problem to overcome.In this thesis,polyacrylamide nanofiber（PAM NFs）was prepared by the electrostatic spinning method using PAM aqueous solution as the precursor,and the optimal spinning parameters were explored.The Nickel ion-doped polyacrylamide nanofibers（Ni Ac/PAM NFs）were prepared by electrospinning using polyacrylamide（PAM）and nickel acetate（Ni Ac）aqueous solution as precursors.The diameter of the nanofibers was controlled,and the diameter was adjustable from 100 nm to 900 nm.Cobalt ion-doped polyacrylamide nanofibers（Co Ac/PAM NFs）were successfully prepared by using PAM and cobalt acetate tetrahydrate（Co Ac）aqueous solution as precursors,copper ion-doped polyacrylamide nanofibers（Cu Ac/PAM NFs）were successfully prepared by PAM and copper acetate tetrahydrate（Cu Ac）aqueous solution as precursors,respectively.It has been proved that PAM aqueous solution is the precursor of an excellent electrospinning process.In this thesis,Ni Ac/PAM NFs were used as a precursor to prepare Ni Ac/PAM NFs coated nitrogen-doped carbon nanofibers（Ni@NCNFs）by char-burning process and applied in the hydrogenation of quinoline.The effects of carbonization temperature,PAM mass fraction,and PAM to Ni Ac mole ratio on the physicochemical properties were further studied.The results show that Ni@NCNFs have a high selectivity（99.0%）at a high quinoline conversion rate（99.3%）in the hydrogenation reaction of quinoline.Co Ac/PAM NFs and Cu Ac/PAM NFs were used to successfully prepare Co Ac/PAM NFs coated carbon nanofibers（Co@NCNFs）,and Cu Ac/PAM NFs coated carbon nanofibers（Cu@NCNF）.The results show that electrospinning and carbonization can be used as excellent catalysts for the hydrogenation of quinoline（Ni@NCNFs）.In addition,nitrogen-rich PAM can be used as a new type of optional electrospinning precursor. |
