Bio-oil upgrading over Ga modified zeolites in a bubbling fluidized bed

Bio-oil upgrading over Ga modified zeolites in a bubbling fluidized bed reactor 

Hyun Ju Park, Young-Kwon Park, Joo-Sik Kim, Jong-Ki Jeon Kyimg-Seiin Yoo, Jin-Heong Yim Jinho Jungf, Jung Min Sohn  

Catalytic upgrading of bio-oil was carried out over Ga modified ZSM-5 for the pyrolysis of sawdust in a bubbling fluidized bed reactor. Effect of gas velocity (Uo/U ,f) on the yield of pyrolysis products was investigated. The maximum yield of oil products was found to be about 60% at the Uo/Umf of 4.0. The yield of gas was increased as catalyst added. HZSM-5 shows the larger gas yield than Ga/HZSM-5. When bio-oil was upgraded with HZSM-5 or Ga/HZSM-5, the amount of aromatics in product increased. Product yields over Ga/HZSM-5 shows higher amount of aromatic components such as benzene, toluene, xylene (BTX) than HZSM-5. 

The sawdust used in this work was a radiata pine. HZSM-5 and HY pellet was purchased from Zeobuilder, Ga was impregnated over zeolites by excess water evaporation. The catalytic upgrading 

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