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采用HRTEM、XRD、LRS研究不同金属含量CoMoP/γ-Al_2O_3催化剂。结果表明,硫化钼层数和尺寸与氧化态催化剂中金属的赋存状态有直接相关性。金属含量较低时,随金属含量增加,氧化态催化剂中金属颗粒尺寸和硫化态催化剂中硫化钼层数和尺寸均逐渐增加。金属含量较高时,氧化态催化剂中出现大颗粒的含钼氧化物,硫化态催化剂硫化钼层数和尺寸随金属含量增加变化不明显。
The catalysts CoMoP / γ-Al 2 O 3 with different metal content were studied by HRTEM, XRD and LRS. The results show that there is a direct correlation between the layer number and size of molybdenum sulfide and the state of metal in the oxidized catalyst. When the metal content is low, with the increase of the metal content, the size of the metal particles in the catalyst in the oxidation state and the number and size of the molybdenum sulfide in the catalyst in the sulfurized state gradually increase. When the metal content is high, large particles of molybdenum oxide appear in the catalyst in the oxidation state, and the number and size of the sulfide catalyst in the sulfide catalyst do not change obviously with the increase of the metal content.