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采用脉冲硫化、连续硫化、程序升温还原、程序升温及程序降温电导及X射线衍射等方法研究了贵金属Pt对MoO3催化剂还原-流化过程的影响及Pt对MOS2配位不饱和活性中心形成的影响.结果表明,Pt担载或在MoO3上可以促进MoO3的还原-硫化,使MoO3的还原-硫化温度大大降低Pt担载在MoSw上可促进MoS2的部分还原形成配位不饱和的钼中心
The effect of Pt on the reduction-fluidization of MoO3 catalyst and the effect of Pt on the formation of the coordinatively unsaturated active site of MOS2 were investigated by means of pulse vulcanization, continuous vulcanization, temperature programmed reduction, temperature programmed and temperature programmed conductance and X-ray diffraction . The results show that the Pt-supported or MoO3 can promote the reduction-sulfidation of MoO3, and the reduction-sulfidation temperature of MoO3 is greatly reduced. Pt supported on MoSw can promote the partial reduction of MoS2 to form the coordination unsaturated Mo center