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通过Al2O3修饰的Ni-TiO2-Al2O3干凝胶催化剂,该催化剂在973K条件下焙烧10h后比表面积为363m2/g。孔分布介于2.5～2.7nm之间。采用BET和X-射线衍射考察了Al2O3组份对Ni/TiO2催化剂的影响。结果表明,Al2O3的加入使催化剂颗粒度变小,镍的分散度提高,抑制了Ni/TiO2催化剂的积碳,从而明显的提高了Ni-TiO2-Al2O3催化剂上甲烷和二氧化碳重整反应的活性和稳定性。
The Ni-TiO2-Al2O3 xerogel modified by Al2O3 was calcined at 973K for 10h and the specific surface area was 363m2 / g. Hole distribution between 2.5 ~ 2.7nm. The effects of Al2O3 on the Ni / TiO2 catalyst were investigated by BET and X-ray diffraction. The results showed that the addition of Al2O3 reduced the particle size of the catalyst and the dispersion of nickel increased, inhibited the carbon deposition of the Ni / TiO2 catalyst and significantly enhanced the activity of methane and carbon dioxide reforming reaction on the Ni-TiO2-Al2O3 catalyst. stability.