碳化钼催化材料的制备、表征及CO加氢反应性能的研究

以MoO3为前驱体，CH4/4H2为碳化介质，通过程序升温反应法(TPRe)制备了不同晶型碳化钼 (β-Mo2C和α-MoC1-x) 催化材料，并通过XRD、BET、TEM、SEM和XPS等表征手段对碳化钼材料的晶体结构、比表面积、形貌及电子特征进行了研究；同时考察了不同晶型碳化钼的CO加氢反应性能。结果表明，其具有很高CO加氢活性，产物主要为烷烃，同时有少量低碳醇生成。因此,碳化钼有望成为新型F T合成或低碳醇合成的催化剂。

Preparation and characterization of molybdenum carbide and its performance on the hydrogenation of carbon monoxide

Molybdenum carbide of both β-Mo2C and α-MoC1-x crystalline forms was prepared by temperature programmed reaction (TPRe) between MoO3 and CH4/4H2. The structure and morphology of molybdenum carbide were characterized by XRD, BET, TEM, SEM and XPS. Its catalytic activity in the hydrogenation of carbon monoxide were investigated under 573K, 8.0MPa, GHSV=2000h－1, n(H2)/n(CO)=1.0. The results indicated that light hydrocarbons of C1～4 are the main products in the hydrogenation of carbon monoxide over molybdenum carbides, with the formation small amounts of alcohols (< 4%). Molybdenum carbide could then be a potential catalyst for the F-T synthesis or the alcohol synthesis.