Study on methane conversion to synthesis gas over nano Pt/MgO catalysts Ⅲ. Influence of the precursors on the physico-chemical properties of the catalysts
Using different precursors, two series of nano Pt/MgO catalysts (Pt-Ⅱ and Pt-Ⅳ, respectively) loaded with Pt in a wide range from 0.1 wt% to 2.2 wt% were prepared by using wet impregnation methods. The physico-chemical properties of catalysts were characterized by using BET, XRD, TPD-CO2, and other techniques. The results revealed that the precursor and content of Pt, especially the acid/base properties of the precursor solution, had a big influence on the structure, and surface properties of the catalysts. The loaded Pt is in metallic state in all the catalysts calcined at 1073 K. The Pt-Ⅱ catalysts had larger surface areas and relatively narrow pore size distribution range. The MgO crystals in the calcined Pt-Ⅱ-3 catalyst had more regular structure than that in the calcined Pt-Ⅳ-3 catalyst.
Min Yang Helmut Papp
School of Environmental and Chemical Engineering,Dalian Jiaotong University.Dalian 116028,China Inst Institute of Technical Chemistry,University of Leipzig,04103 Leipzig,Germany
国际会议
The 8th China International Nanoscience and Technology Symposium(2009第八届中国国际纳米科技湘潭研讨会Cinsts09)
湖南湘潭
英文
1-4
2009-10-23（万方平台首次上网日期，不代表论文的发表时间）