Decomposition of NH3 on Ru(11(2)over-bar1)

被引：35

作者：

Dietrich, H ^{[1
]}

Jacobi, K ^{[1
]}

Ertl, G ^{[1
]}

机构：

[1] MAX PLANCK GESELL,FRITZ HABER INST,D-14195 BERLIN,GERMANY

来源：

SURFACE SCIENCE | 1996年 / 352卷

关键词：

chemisorption; dissociation; electron energy loss spectroscopy; high index single crystal surfaces; ruthenium; thermal desorption spectroscopy; vibrations of adsorbed molecules;

D O I：

10.1016/0039-6028(95)01120-X

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 thermal decomposition of NH3 was studied on the open Ru(11 (2) over bar 1) surface using high-resolution electron energy loss spectroscopy (HREELS) and thermal desorption spectroscopy (TDS), For small NH3 coverages up to 0.25 of a monolayer, NH3 decomposes completely during annealing of the sample. At higher coverages molecular desorption is also observed. The dehydrogenation gives rise to sharp peaks in the H-2 TD spectra. NH2, NH, and N are identified using HREELS. A translational mode of NH3 is observed at 15 meV.

引用

页码：138 / 141

页数：4

共 9 条

[1] HETEROGENEOUS CATALYSIS OF AMMONIA-SYNTHESIS AT ROOM-TEMPERATURE AND ATMOSPHERIC-PRESSURE [J].

AIKA, K .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1986, 25 (06) :558-559

[2] ADSORPTION AND THERMAL-DECOMPOSITION OF AMMONIA ON A NI(110) SURFACE - ISOLATION AND IDENTIFICATION OF ADSORBED NH2 AND NH [J].

BASSIGNANA, IC ;

WAGEMANN, K ;

KUPPERS, J ;

ERTL, G .

SURFACE SCIENCE, 1986, 175 (01) :22-44

[3] ADSORPTION AND ORIENTATION OF NH3 ON RU(001) [J].

BENNDORF, C ;

MADEY, TE .

SURFACE SCIENCE, 1983, 135 (1-3) :164-183

[4] ELECTRON-ENERGY LOSS SPECTROSCOPY OF AMMONIA ON RU(001) [J].

PARMETER, JE ;

WANG, Y ;

MULLINS, CB ;

WEINBERG, WH .

JOURNAL OF CHEMICAL PHYSICS, 1988, 88 (08) :5225-5236

[5] ADSORPTION AND DECOMPOSITION OF HYDRAZINE ON RU(001) [J].

RAUSCHER, H ;

KOSTOV, KL ;

MENZEL, D .

CHEMICAL PHYSICS, 1993, 177 (02) :473-496

[6] INTERACTION OF HYDROGEN WITH NITROGEN-ATOMS CHEMISORBED ON A RU(0001) SURFACE [J].

SHI, H ;

JACOBI, K ;

ERTL, G .

JOURNAL OF CHEMICAL PHYSICS, 1995, 102 (03) :1432-1439

[7] CESIUM OXYGEN COADSORPTION ON RU(001) [J].

SHI, H ;

JACOBI, K ;

ERTL, G .

SURFACE SCIENCE, 1992, 269 :682-686

[8] DISSOCIATIVE CHEMISORPTION OF NITROGEN ON RU(0001) [J].

SHI, H ;

JACOBI, K ;

ERTL, G .

JOURNAL OF CHEMICAL PHYSICS, 1993, 99 (11) :9248-9254

[9]

TENNISON SR, 1991, CATALYTIC AMMONIA SY, P303

← 1 →