生物质热裂解气中模型化合物萘的催化转化研究

The effect of steam content and reaction temperature on the catalytic conversion of Naphthalene, which was chosen as the model compound in pyrolysis gas from biomass, has been investigated with a Ni-Pt/Al2O3 catalyst in a fixed bed reactor. It has been confirmed that increasing the reaction temperature not only enhances the conversion of naphthalene and H2-, CO-yield, but also improves the CO-selectivity, however the H2-selectivity and the carbon deposit decrease. High steam content is favorable to increase the naphthalene conversion, the H2-yield and -selectivity, but the CO-yield and -selectivity as well as the carbon deposit decrease with increasing steam content. It is also found that the concentration of benzene, a by-product of naphthalene conversion, increases with the enhanced steam content and reaches a maximum at 700 ℃.