采用减压蒸馏生物油为原料，与无水乙醇2∶3（质量比）混合，在固定床中 ZSM－5／MCM－41分子筛上共催化裂化，考查了反应温度和质量空速（WHSV）对裂化产物的影响。对 ZSM－5／MCM－41进行了 NH3－TPD、BET、N2吸附－脱附等表征，对裂化气体产物通过气相色谱仪分析，减压蒸馏生物油和精制生物油采用气相色谱－质谱联用仪进行定量分析。结果表明，反应温度500℃、WHSV 3．75 h－1为反应优化工况。此反应条件下，精制生物油酸类物质从减压蒸馏生物油中的25．6％降至反应后的0．1％，效果显著，且精制生物油产率为46．8％，气体产物中 CO2和 CO 的浓度共9．5％。%The reduced pressure distillation of bio-oil and the ethanol with the mixing ratio of 2∶3 by weight were subjected to catalytic co-cracking over ZSM-5/MCM-41 molecular sieve in a fixed-bed reactor. The effects of reaction temperature and WHSV on cracking products were investigated.The catalyst is characterized by NH3-TPD, BET, N2 adsorption and desorption.The gaseous products were analyzed by gas chromatograph, and reud ced pressure distillation of bio-oil and the upgraded bio-oil were quantified by gas chromatog raph-mass spectrometry.It is found that the optimum conditions for the upgraid ng of bio-oil are 500 ℃ of the reaction et mperatuer and 3 .75 h-1 of the WHSV , under wh ich the acid substance in upg raded bio-oili s markedly reduced from 25.6% in reduced pressur e distillation of bio-oil to 0.1% after upgrading.Meanwhile, the iy eld of pu graed d bio-oil is 46 .8%, and the concentration of CO and CO in the ag seous products is 9.5%.
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