| 초록 |
Coffee ground which is generated during coffee extraction is considered a good urban biomass for the production of advanced biofuel such as green gasoline via fast pyrolysis because of its high generation (more than 100,000 ton in Korea) and good quality (small particle size) as a feedstock. Since coffee ground contains a relatively high amount of fatty acids and the fatty acids remain in bio-oil after fast pyrolysis, it is necessary to conduct C-C cracking in order to maximize the yield of green gasoline in upgrading processes such as hydrodeoxygenation. In this work, liquid products from the cracking reactions over zeolites were evaporated at 200 ℃ and 80 mbar in rotary vacuum evaporator to obtained gasoline fraction. The highest yield of gasoline was obtained for the products from the cracking over MCM-41 at 500 oC. GC-MS analysis results show the composition of the gasoline fraction consisting of 70.5% hydrocarbons and 27.4% aromatics.
|
