| 초록 |
Light olefins such as ethylene and propylene are key basic chemicals in the industrial production of various petrochemical products. Conventionally, the light olefins mostly have been from steam cracking of naphtha at high temperature range, resulting in high energy consumption and excessive byproduct production. Catalytic cracking of naphtha using phosphorus modified ZSM-5 has been investigated at the lower reaction temperature, which still required to reduce the energy consumption and production of side product. To compensate energy consumption in the endothermic cracking reaction, the conversion of hydrocarbons coupled with exothermic methanol-to-olefins reaction has been tried. In this study, we investigated the catalytic function of P-modified zeolites such as ZSM-5 (MFI), ZSM-11 (MEL) and ZSM-35 (FER) in the mixed feed cracking reaction. The P-ZSM-5 possessing high crystallinity and uniform crystal morphology showed superior catalytic performance, exhibiting high olefin yields. |
