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In general, the ordered mesostructures can be classified as two-dimensional (2D) and three-dimensional (3D) architecture according to the pore symmetry. Ordered mesoporous materials with high surface area, large pore volume, ordered pore structure, and good thermal and mechanical stabilities have a broad range of applications in catalysis, adsorption, energy storage, and nanodevices due to their unique physical and chemical properties. In addition, we compared the HDS activity of Mo catalyst supported on FDU-12 with that on the commercial γ-Al 2O 3 and SBA-15 the result exhibits that FDU-12 is superior to the other two supports due to its large pore size and ordered three-dimensional open pore channels.
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The HDS results show that the catalytic activity increases first and then decreases with the best HDS performance at the MoO 3 loading of 10 wt.%. It is found that, as increasing MoO 3 loadings from 6 to 15 wt.%, the MoS 2 nanocrystallites transform from monolayer to multilayer and the morphology changes from straight layered to curved and then to ring-like and finally to spherical-like morphology due to the restriction of cage-like pore channels of FDU-12 support. The objective of this work is to explore the pore confinement effect of FDU-12 mesochannels on the MoS 2 morphology with various metal loadings.
![al3d xps peak al3d xps peak](https://www.mdpi.com/materials/materials-11-01803/article_deploy/html/images/materials-11-01803-g004a.png)
#AL3D XPS PEAK SERIES#
A series of Mo/FDU-12 catalysts are synthesized by using incipient wetness impregnation method with different MoO 3 loadings (6, 8, 10, 12, and 15 wt.%). FDU-12 silica with highly ordered face-centered cubic mesoporous structure is developed as support to prepare Mo/FDU-12 catalysts for hydrodesulfurization (HDS) of dibenzothiophene (DBT).