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Zeolite Catalysis

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Zeolite Catalysis ( zeolite-catalysis )

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Figure 1. XRD patterns of the as-synthesized Ga2O3/ZSM-5 and Nano-ZSM-5. Figure 2. Ga 2p3/2 XPS spectra of Ga2O3 and Ga2O3/ZSM-5. Figure 2. Ga 2p3/2 XPS spectra of Ga2O3 and Ga2O3/ZSM-5. Figure 3A shows the SEM image of the synthesized Nano-ZSM-5 with the average particle size of137nmF.igAufrter3tAheshinotwrosdutchteionSEoMfGima2Oag3eonofNtahneos-ZySnMth-e5sibzyedimNpraengon-aZtiSoMn-(5Figwuirteh3tBh)e,the morpahvoelroagyeapnadrptiacrlteicsleizseizoefof1G37a2nOm3/Z. SAMf-t5erdothneoitnsthrowduobctviionusocfhGanageO. Thoen,NGan2Oo3-/ZSM--5was 23 used as building blocks for the preparation of Ga2O3/ZSM-5 hollow fibers via coaxial electrospinning. by impregnation (Figure 3B), the morphology and particle size of Ga2O3/ZSM-5 do Specifically, a suspension of Ga2O3/ZSM-5 nanocrystals in polyvinylpyrrolidon (PVP)/ethanol not show obvious change. Then, Ga2O3/ZSM-5 was used as building blocks for the solution used as the outer fluid, and paraffin oil acted as the inner liquid. The addition of PVP in the preparation of Ga2O3/ZSM-5 hollow fibers via coaxial electrospinning. Specifically, suspension was to provide appropriate viscosity for the fluent electrospinning, and paraffin oil, the a suspension of Ga O /ZSM-5 nanocrystals in polyvinylpyrrolidon (PVP)/ethanol 23 inner liquid, was to present hollow structure via calcination. The Ga2O3/ZSM-5/PVP composite fibers solution used as the outer fluid, and paraffin oil acted as the inner liquid. The were successfully prepared (Figure 3C), and after temperature-programmed calcination, the PVP and addition of PVP in the suspension was to provide appropriate viscosity for the fluent paraffin oil were removed, and hierarchical Ga2O3/ZSM-5 hollow fibers were obtained (Figure 3D). From Figure 3D, hollow structure and comparatively uniform diameter of the as-prepared fibers couldcableciwnealtlisoenen. .TFhigeuGrea3EOpr/esZeSnMts t-h5e/hPigVhPmcaogmnipfiocastitoenfiSbEeMrsimwaegreeosfuthceceresdsfsuqlulyarepirnepFiagruerde 3D, electrospinning, and paraffin oil, the inner liquid, was to present hollow structure via 23 and it clearly shows that the wall of the Ga2O3/ZSM-5 zeolite hollow fibers is composed of (Figure 3C), and after temperature-programmed calcination, the PVP and paraffin Ga2O3/ZSM-5 nanoparticles, with uniform macropores on the hollow fiber level. The TEM image oil were removed, and hierarchical Ga2O3/ZSM-5 hollow fibers were obtained (Figure 3F) of the fibers further proves the continuous hollow structure character of the fibers. (Figure 3D). From Figure 3D, hollow structure and comparatively uniform diameter of the as-prepared fibers could be well seen. Figure 3E presents the high magnification SEM image of the red square in Figure 3D, and it clearly shows that the wall of the Ga2O3/ZSM-5 zeolite hollow fibers is composed of Ga2O3/ZSM-5 nanoparticles, with uniform macropores on the hollow fiber level. The TEM image (Figure 3F) of the fibers further proves the continuous hollow structure character of the fibers. The EDAX elemental maps present the element distribution of Si, O, Al, and Ga (Figure 4), and bright green dots indicates that Ga element is well dispersed on the as-prepared Ga2O3/ZSM-5 hollow fibers. 180

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