| 초록 |
The effect of desilication for Ni2P/β-zeolite catalysts on the structure, acidity, and performance on the hydrocracking of 1-methylnaphthalene was studied. Ni2P catalysts supported on β or desilicated β (DS-β) zeolites were prepared by temperature-programmed reduction (TPR), were characterized by N2 physisorption, transmission, electron microscope (TEM), X-ray diffraction (XRD), NH3 temperature-programmed desorption (TPD), CO chemisorption, and were applied for the hydrocracking of 1-methylnaphthalene (1-MN). The catalytic activity was tested at 6.0 MPa and 653 K in a fixed bed reactor. The Ni2P/β gave a BTX yield of 43.2 wt%, while the desilicated Ni2P/DS-β exhibited a higher BTX yield of 45.9 wt%. Moreover, a gradual deactivation was observed in the Ni2P/β catalyst with reaction time, exceeding 196 h due to a coke deposit. However, the desilicated Ni2P/DS-β maintained the stability, demonstrating the increased porosity with better dispersion of Ni2P particles provides high and stable hydrocracking activity of the desilicated Ni2P/DS-β catalyst. |
