介孔Ni-β-Mo_2C/SBA-16催化剂在CH_4/CO_2重整制合成气反应中的催化性能

Catalytic performance of mesoporousmaterialsupported bimetallic carbide Ni--Mo_2C/SBA-16 catalyst forCH_4/CO_2 reforming to syngas

采用等体积浸渍将双金属活性组分负载到介孔分子筛SBA-16上,通过热分解制备了负载型催化剂Ni--Mo2C/SBA-16.N2吸附-脱附、X射线粉末衍射和透射电镜等结果表明,引入活性组分后,样品依然保持原有的有序介孔结构,活性组分高度分散于载体上,没有团聚.在CH4/CO2重整制合成气反应中,Ni--Mo2C/SBA-16催化剂具有较高的CH4和CO2转化率,以及CO和H2选择性,有明显的抗积炭作用.

Mesoporous molecular sieve SBA-16 supported bimetallic carbide catalyst Ni--Mo2C/SBA-16 was prepared using the impregnation and thermal decomposition method. N2 adsorption-desorption isotherms, powder X-ray diffraction, and transmission electron microscopy measurements show that the active components wereuniformly dispersed on the support, and the catalyst still remained ordered mesoporous structure of SBA-16. Catalytic performance measurements show that the catalyst exhibitedhigher conversion rate of CH4, CO2, and selectivityof CO, H2, and remarkable anti-coke effect.