Adsorption and reaction of Mo(CO)(6) on chemically modified Pt(110) model surfaces

作者：Jiang Zhiquan^*; Xu Lingshun; Huang Weixin

来源：Journal of Molecular Catalysis A: Chemical , 2009, 304(1-2): 16-21.

DOI：10.1016/j.molcata.2009.01.012

• Molybdenum hexacarbonyl
• Pt(110)
• Mo/Pt(110)
• MoO(x)/Pt(110)
• High-resolution electron energy loss spectroscopy
• Thermal desorption spectroscopy

The surface chemistry of Mo(CO)(6) on Pt(1 1 0), Mo/Pt(1 1 0) and MoO(x)/Pt(1 1 0) surfaces was investigated by high-resolution electron energy loss spectroscopy and thermal desorption spectroscopy. The Mo/Pt(1 1 0) surface was prepared by dosing Mo(CO)(6) on Pt(1 1 0) at 700 K followed by annealing at 1000 K. The oxidation of Mo/Pt(1 1 0) surface leads to the formation of MoO(x)/Pt(1 1 0) surface. Mo(CO)(6) molecularly chemisorbs on the clean Pt(1 1 0) and MoO(x)/Pt(1 1 0) surfaces at 100 K, however, undergoes partial dissociation on the Mo/Pt(1 1 0) surface. The Mo/Pt(1 1 0) surface more strongly donates electrons to adsorbates than the Pt(1 1 0) and MoO(x)/Pt(1 1 0) surfaces, and thus exhibits a higher reactivity toward Mo(CO)(6). We propose that the interaction of CO ligands in Mo(CO)(6) with the metal surface determines the adsorption behavior of Mo(CO)(6). Our work enriches the surface chemistry of Mo(CO)(6), on metallic substrates.

• 出版日期2009-5-1
• 单位中国科学技术大学