制备了 Ni／Al2 O3、Ni－Cu／Al2 O3、Ni －Co／Al2 O3和 Ni －Co－Cu／Al2 O3催化剂，研究了 Co 和 Cu 对生物油水蒸气催化重整的影响。实验表明，Co 能促进水汽变换（WGS）反应，提高氢气的产率，Cu 能抑制反应中焦炭的形成，提高催化剂的稳定性。对催化剂 Ni－Co－Cu／Al2 O3进行工艺条件考察，当900℃、水油比为6 g／g、质量空速（WHSV）为1 h－1时，碳选择性达到87．5％，氢气产率达到84．2％，潜在氢气产率达到92．4％。%Ni/Al2 O3 cat aly st was selected as the reference catalyst for steam reformi ng of mo del bio-oil to produce hydrog en.Ni-Cu/Al2 O3 , Ni-Co/Al2 O3 and Ni-Co-Cu /Al2 O3 were prepared to investigate the influence of Co and Ni on steam reforming of bio-oil.The results show that Co can enhance the water gas shift (WGS) reaction rate, and Cu can prevent the formation of coke.The reaction conditions for the steam re formi ng of bio-oil with the Ni-Co-Cu/Al2 O3 catalyst were optimized as the follows: te mper ature of900 ℃, wat er-oil ratio (the mass ratio of steam to oil) of 6 g/g and weight hourly space velocity (WHSV) of 1 h-1 .The carbon selectivity of 87.5%, hydrogen yield of 84.2% and potential hydrogen yield of 92.4% can be obtained at the optimum conditions.
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