Ordered mesoporous SiC materials with different architectures were facilely prepared by a nanocasting method using SBA-15, KIT-6 and MCM-41 as hard templates, and the latter obtained nickel-containing SiC materials were applied to the dry reforming of methane. After reacting at 750 °C for 25 h, the catalytic activity and stability are declined in the sequence of Ni/SiC-KIT–6 > Ni/SiC-SBA–15 >> Ni/SiC-MCM-41. Physicochemical properties of prepared mesoporous Ni/SiC catalysts were further characterized by using N₂ adsorption, inductively coupled plasma atomic emission spectrometer (ICP-AES), X-ray diffraction (XRD), H₂ chemisorption, temperature programmed reduction (TPR), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA) etc. The characterization results showed that both Ni/SiC-KIT-6 and Ni/SiC-SBA-15 inherit the ordered mesoporous structure from their mother templates, while Ni/SiC-MCM-41 had a poor mesoporous structure since the pore size of MCM-41 is too narrow to penetrate precursors. Ni/SiC-KIT-6 showed strong confinement effect of three-dimensional bicontinuous mesoporous structure, leading to the well dispersion/anchoring of metal particle inside the pores and strong metal support interaction. Meanwhile, Ni/SiC-SBA-15 showed a confinement effect of two-dimensional channel arrays but with a few large Ni particles outside the mesopores, which may result in the carbon deposition and catalytic deactivation. And due to the rigid confinement effect and the superior structure stability at high temperatures, Ni/SiC-KIT-6 showed the excellent catalytic activity and stability for dry reforming of methane.

以SBA-15，KIT-6和MCM-41为硬模板，通过纳米浇铸的方法方便地制备了不同结构的有序介孔SiC材料，并将后者获得的含镍SiC材料应用于甲烷的干重整。在750°C下反应25 h后，Ni / SiC-KIT-6> Ni / SiC-SBA-15 >> Ni / SiC-MCM-41的催化活性和稳定性下降。利用N ₂吸附，电感耦合等离子体原子发射光谱仪（ICP-AES），X射线衍射（XRD），H ₂进一步表征了制备的介孔Ni / SiC催化剂的理化性质。化学吸附，程序升温还原（TPR），透射电子显微镜（TEM）和热重分析（TGA）等。表征结果表明，Ni / SiC-KIT-6和Ni / SiC-SBA-15都继承了有序的介孔结构Ni / SiC-MCM-41具有较差的中孔结构，因为MCM-41的孔径太窄而无法穿透前体。Ni / SiC-KIT-6表现出强烈的三维双连续介孔结构的约束作用，导致金属颗粒在孔内的良好分散/锚固以及强大的金属载体相互作用。同时，Ni / SiC-SBA-15表现出二维通道阵列的约束效应，但在中孔外有一些大的Ni颗粒，这可能导致碳沉积和催化失活。