| 초록 |
Polyaromatic hydrocarbon compounds (PAH) such as naphthalene, anthracene, phenanthrene, and their derivatives in heavy resid, are highly required to upgrade into lighter fractions such as benzene, toluene and xylene (BTX) via catalytic hydrocracking. In this study, Ni2P catalysts supported on two types of zeolite Beta having different crystal sizes, i.e. nano- and micron-sized (Beta-N and Beta-M) were prepared by TPR method and applied for the hydrocracking of 1-methylnaphthalene at 6.0 MPa and 653 K in a three-phase fixed bed reactor. The catalysts were characterized by BET, CO uptake, isopropylamine-TPD, TEM, X-ray diffraction, and EXAFS. The Ni2P/Beta-N showed high activity and stability for hydrocracking of 1-MN compared to the Ni2P/Beta-M, with exhibiting high BTX yield (55% vs. 43%). Nano-sized Beta was found to retain inter-crystalline mesopores, beneficial to better dispersion of Ni2P, leading to the better activity of Ni2P/Beta–N in HCK than Ni2P/Beta-M. |
