Pt对Mo基催化剂还原-硫化过程的影响

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

Effect of Supported Pt on Reduction and Sulfidation of Mo Based Catalysts

Effect of supported Pt on reduction and sulfidation for Pt/MoO3 and Pt/MOS2 catalysts were studied by pulse reduction-sulfidation, flow reduction-sulfidation, temperature pro-grammed electrical conductivity, temperature programmed reduction technique and X ray diffrac-tion analysis. It was found that, for Pt/MoO3 the addition of Pt greatly promoted the reductionand sulfidation of MoO3, it was also shown that, for Pt/MoS2 Pt obviously facilitated the re-duction of MoS2 to form S-vacancy, leading to an increment of the concentration of coordinativeunsaturated molybdenum.