| 초록 |
There has been a strong desire to upgrade surplus poly-aromatic hydrocarbons (PAHs) of diesel boiling range such as light cycle oil (LCO) from fluidized catalytic crackers. One feasible option for upgrading LCO in which naphthalene and alkyl naphthalenes contents are high, is to produce high-value chemicals such as BTX. To obtain a high per-pass yield of BTX, it is important to convert the 2- and 3-ring aromatics into 1-ring products in high selectivity followed by selective hydrocracking of 1-ring aromatics into BTX. In order to design selective hydrocracking catalysts, we have investigated the effects of metallic functions of different hydrogenation power, acidity and structure of zeolites of hydrocracking catalysts on the conversion of model reactant, tetralin. It was found that BTX yield can be much enhanced by employing a metallic function of moderate hydrogenation activity on a hybrid zeolite matrix composed of a large-pore zeolite (12MR) and a medium-pore zeolite (10MR). |
