【摘 要】
：
A novel hybrid material consisted of carbon covered Fe3O4 nanoparticles and MoS2 nanoflower (FCM) was designed and prepared by micelle-assisted hydrothermal methods.Multiple techniques,including X-Ray diffraction (XRD),high-resolution transmission electro
【机 构】
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CAS Key Laboratory of Green Process and Engineering,State Key Laboratory of Biochemical Engineering,
论文部分内容阅读
A novel hybrid material consisted of carbon covered Fe3O4 nanoparticles and MoS2 nanoflower (FCM) was designed and prepared by micelle-assisted hydrothermal methods.Multiple techniques,including X-Ray diffraction (XRD),high-resolution transmission electron mi-croscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS) were employed to characterize it.The results show that FCM has a flower-like morphology with a 330 nm Fe3O4 core as well as 70 nm highly crystalline MoS2 shell.FCM is superparamagnetic with a saturation magne-tization of 35 emu g-1.Then hydrocracking of Canadian bitumen residue (CBR) was applied to estimate its catalytic activity.The results show that FCM exhibits superior catalytic hydrocracking activity compared to bulk MoS2 and commercial oil-dispersed Mo(CO)6 by the same Mo loading.Further measurement by elemental analysis,XPS and XRD reveals that the MoS2 nanoflower with abundant catalytic active sites and covered carbon layer with anti-coke ability donate to the superior upgrading performance.Besides,the catalysts can be easily recovered by the external magnetic field.This work provides a novel kind magnetic nanocatalyst which is potential for slurry-phase hydrocracking applications.
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