| 초록 |
Low-priced solid acid catalysts from coal fly ash (FSAs) have been synthesized. FSAs were prepared by a simple activation method which basically includes NaOH treatment of coal fly ash by fusion method at high temperature, followed by aging process at room temperature. The effects of NaOH/fly ash fusion ratio, solid/liquid ratio of fused materials and water, and pH of aging solution on the properties of catalysts were investigated by XRD, SEM, BET and NH3-TPD. The catalytic performance of FSAs was evaluated in terms of degradation temperature shift and boiling point distribution of liquid products in LDPE pyrolysis. Due to use of cheap silica-alumina source and simple synthesis method, it is believed that FSAs are very useful for catalytic pyrolysis of polymeric wastes. |
