摘要
催化水蒸气重整由生物质快速裂解得到的生物油制取氢气,催化剂C12A7-O-/15%Mg显示了很高的活性,并在我们所研究的几种催化剂中具有最高的氢产率.在最佳重整条件(T=750℃,S/C=6.0,GHSV=26 000 h-1)下,得到70%的氢产率和约93%的最大碳转化率.结果显示,氢产率和碳转化率对温度和S/C(水蒸气和碳的摩尔比)具有选择性.目前结果表明,由水蒸气重整生物油制取的生物油合成气,用费托合成法直接合成洁净液体生物油燃料将是一个很有前景的选择.研究了由生物油合成气制备的费托合成液体燃料的特征,在典型的反应条件(T=300℃,P=1.5 MPa,W/F=12.5 gcat.h/mol)下,总碳转化率(包括CO和CO2)约36%,C5+的选择性约44%.
The C12A7-O^- /15%Mg catalyst shows higher activity for hydrogen generation from the catalytic steam reforming of bio-oil（generated from fast pyrolysis of biomass）, giving the highest yield of hydrogen among our tested catalysts. The yield of hydrogen of 70% was obtained under the optimum steam reforming conditions （T= 750 ℃, S/C= 6.0, GHSV=26 000 h^-1）. The maximum carbon conversion is about 93%. It was also found that both the hydrogen yield and the carbon conversion over the C12A7-O^-/15 %Mg catalyst were selective to the temperature ahd the SIC （the molar ratio of steam to carbon fed） ratio. The results show that FTS （Fischer Tropsch synthesis） using the bio-oil syngas, produced by the steam reforming of bio-oil, would be a promising option to directly synthesize clean liquid bio-fuels. The characteristics of FTS performance using the bio-oil syngas were studied. Total carbon （CO＋CO2） conversion of about 36% and C5＋ selectivity of about 44% were obtained at a typical reaction conditions： T=300℃, P=1.5 MPa, W/F=12.5 gcat · h/mol.
基金
State Key Basic Research Development(973)Program(2007CB210200)
National High Technology Research and Development(863)Program(2006AA05Z118).
