中文摘要：

以1,6-己二胺和钼酸铵为前躯体，采用有机-无机杂化法及后续的程序升温碳化法制备了纳米线β-Mo2C。通过机械混合法制备了镁改性的β-Mo2C催化剂并考察了其在CO加氢反应中的催化性能。结果表明，镁的改性对纳米线碳化钼的织构性质没有明显的影响，但在CO加氢反应中显著提高了CO转化率，且提高了烷烃的选择性及其链增长能力，表现为抑制了甲烷而促进了C2-C5烷烃的生成。但是Mg的添加对醇选择性及链增长能力影响不明显。

英文摘要：

β-Mo2C nanowires were prepared by an organic-inorganic hybrid method with 1,6-hexamethylenediamine and ammonium molybdate as precursors, then modified with magnesium by mechanical mixing. The performances of the prepared Mg-doped nanostructuredβ-Mo2C catalysts for hydrogenation of CO were investigated. The results showed that the doping of MgO did not alter the textural properties of the catalysts, but increased CO conversation, improved the selectivity to hydrocarbons and promoted hydrocarbon chain growth, which resulted in that the formation of methane was inhibited and the yield of C2-C5 alkanes increased. However, the selectivity towards alcohols and the ability of alcohol chain growth almost unchanged.