An effective approach to preparing MgO-Ag NPs-CNFs and Al2O3-Ag NPs-CNFs for styrene epoxidation action

作者：Liu, Huan; Bai, Jie^*; Li, Chunping; Xu, Wei; Sun, Weiyan; Xu, Tong; Huang, Yarong; Li, Hongqiang

来源：RSC Advances, 2014, 4(7): 3195-3200.

DOI：10.1039/c3ra44494e

• CARBON NANOFIBERS
• COMPOSITE NANOFIBERS
• METAL-OXIDES
• CATALYSTS
• HYDROGENATION
• FABRICATION
• OXIDATION
• FIBER

Two kinds of metal oxide-silver nanoparticles (Ag NPs) embedded in carbon nanofibers (CNFs) were prepared by electrospinning followed by calcination. The resulted nanofibers were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. It indicated that MgO-Ag NPs and Al2O3-Ag NPs were well-distributed in the CNFs. This effective synthesis method can be used to prepare other composite nanofibers with functionality. MgO-Ag NPs-CNFs and Al2O3-Ag NPs-CNFs served as supported catalysts were used in the styrene epoxidation by TBHP. The Al2O3-Ag NPs-CNFs catalyst showed its high catalytic activity for the epoxidation of styrene (conversion: 46.45%, styrene oxide (SO) selectivity: 34.45%), as compared with the MgO-Ag NPs-CNFs catalyst. The addition of MgO or Al2O3 had the effect of a promoter in the catalyst system. These kinds of composite nanofiber membranes have proven effective catalytic activity and recyclability in the styrene epoxidation.

• 出版日期2014
• 单位内蒙古工业大学