OFF-NORMAL EMISSION OF N2 PRODUCED BY DESORPTION MEDIATED REACTION OF NO ON PD(110) SURFACE

被引：23

作者：

IKAI, M ^{[1
]}

HE, H ^{[1
]}

BORRONIBIRD, CE ^{[1
]}

HIRANO, H ^{[1
]}

TANAKA, K ^{[1
]}

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,7-22-1 ROPPONGI,MINATO KU,TOKYO 106,JAPAN

来源：

SURFACE SCIENCE | 1994年 / 315卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(94)90528-2

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：

NO molecules adsorbed on a Pd(110) surface undergo desorption with maxima at approximately 495 K at low coverage but two desorption peaks at approximately 370 K and 495 K at high coverage. Desorption of NO at 495 K mediates the emission of N2 and N2O. However, desorption of NO at 370 K produces neither N2 nor N2O. NO molecules desorbed at 495 K obey cos theta towards the [001] direction, whereas the N2 molecules emitted at 495 K have a very sharp spatial distribution 37-degrees off-normal to the surface in the [001] direction. The emission of N2 has a full width at half maximum (FWHM) of 19-degrees which can be represented by cos46(theta - 37). The spatial distributions of N2 and NO in the [110BAR] direction, however, obey cos4.2theta and cos1.6theta, respectively.

引用

页码：L973 / L976

页数：4

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