Abstract: Fe3O4 particles were combined with multi-walled carbon nanotubes(MWCNTs) to form MWCNTs@Fe3O4 magnetic carrier by in-situ method.Rhodium nanoparticles were loaded onto surface of magnetic carbon nanotubes to form MWCNTs@Fe3O4@Rh magnetic carbon nanotube catalysts.The structure and morphology of the catalyst were characterized by TEM,XRD and XPS.It can be seen from TEM that the carbon nanotubes were entangled in Fe3O4 nanoparticles with diameter of 300~400nm,and the surface loaded Rh nanoparticles with diameter less than 10nm.The Rh nanoparticles and Fe3O4 nanoparticles had a better load on the surface of the carbon nanotube.The existence of Fe3O4 and Rh particles can be demonstrated by powder X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS).The hydrogenation of nitrile butadiene rubber (NBR) was used to evaluate the catalytic properties of MWCNTs@Fe3O4@Rh.The conversion of 98.17% and good selectivity tor CC were obtained under optimum condition (120℃,4.0MPa,8h).In addition,the traditional catalyst loaded on carbon nanotubes directly(MWCNT@Rh) and prepared MWCNTs@Fe3O4@Rh catalyst were both recycled.After repeating 3 times,the hydrogenation degree of catalysts prepared still remain was 91.53%,while the hydrogenation degree of original catalyst was less than 40%.
姚含波, 钱家盛, 夏茹, 苗继斌, 杨斌, 曹明. 磁性碳纳米管负载铑催化剂在丁腈橡胶氢化方面的应用研究[J]. 化工新型材料, 2019, 47(7): 204-208.
Yao Hanbo, Qian Jiangsheng, Xia Ru, Miao Jinbin, Yang Bin, Cao Ming. Study on MWCNTs@Fe3O4@Rh for NBR hydrogenation. New Chemical Materials, 2019, 47(7): 204-208.
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