Adsorption of methane and ethane on RuO2(110)surfaces

被引：15

作者：

Erlekam, U ^{[1
]}

Paulus, UA ^{[1
]}

Wang, Y ^{[1
]}

Bonzel, HP ^{[1
]}

Jacobi, K ^{[1
]}

Ertl, G ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 2005年 / 219卷 / 07期

关键词：

adsorption; thermal desorption spectroscopy (TDS); vibrational spectroscopy (HREELS); methane; ethane; RuO2(110);

D O I：

10.1524/zpch.219.7.891.67086

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The adsorption of methane and ethane on the stoichiometric and O-rich RuO2(110) surfaces, respectively, was studied by thermal desorption and high-resolution electron energy loss spectroscopy. The results support weak adsorption (physisorption) of these molecules on the surface, regardless of the presence of undercoordinated Ru and oxygen surface sites. The vibrational spectra recorded at about 90 K are compared with spectra calculated for gaseous CH4 and C2H6. The nearly complete agreement of frequencies and relative intensities is consistent with physisorption. No evidence of adsorption induced molecule activation is found.

引用

页码：891 / 903

页数：13

共 14 条

[1] Nonoxidative activation of methane [J].

Choudhary, TV ;

Aksoylu, E ;

Goodman, DW .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2003, 45 (01) :151-203

[2] The oxidation of CO on RuO2(110) at room temperature [J].

Fan, CY ;

Wang, J ;

Jacobi, K ;

Ertl, G .

JOURNAL OF CHEMICAL PHYSICS, 2001, 114 (22) :10058-10062

[3]

FRISCH MJ, 2004, GUASSIAN 03 REVISION

[4] Characterization of various oxygen species on an oxide surface:: RuO2(110) [J].

Kim, YD ;

Seitsonen, AP ;

Wendt, S ;

Wang, J ;

Fan, C ;

Jacobi, K ;

Over, H ;

Ertl, G .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (18) :3752-3758

[5] Carbonate formation on the O-enriched RuO2(110) surface [J].

Lafosse, A ;

Wang, Y ;

Jacobi, K .

JOURNAL OF CHEMICAL PHYSICS, 2002, 117 (06) :2823-2831

[6] DEVELOPMENT OF THE COLLE-SALVETTI CORRELATION-ENERGY FORMULA INTO A FUNCTIONAL OF THE ELECTRON-DENSITY [J].

LEE, CT ;

YANG, WT ;

PARR, RG .

PHYSICAL REVIEW B, 1988, 37 (02) :785-789

[7] Atomic-scale structure and catalytic reactivity of the RuO2(110) surface [J].

Over, H ;

Kim, YD ;

Seitsonen, AP ;

Wendt, S ;

Lundgren, E ;

Schmid, M ;

Varga, P ;

Morgante, A ;

Ertl, G .

SCIENCE, 2000, 287 (5457) :1474-1476

[8] Adsorption and interaction of ethylene on RuO2(110) surfaces [J].

Paulus, UA ;

Wang, Y ;

Bonzel, HP ;

Jacobi, K ;

Ertl, G .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (06) :2139-2148

[9] The kinetics of CO oxidation on RuO2(110):: Bridging the pressure gap [J].

Wang, J ;

Fan, CY ;

Jacobi, K ;

Ertl, G .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (13) :3422-3427

[10] Adsorption and reaction of CO on RuO2(110) surfaces [J].

Wang, J ;

Fan, CY ;

Jacobi, K ;

Ertl, G .

SURFACE SCIENCE, 2001, 481 (1-3) :113-118

← 1 2 →