DECOMPOSITION OF FORMALDEHYDE ON CU-NI(110) SINGLE-CRYSTAL SURFACES

被引：19
|
作者：
SILVERMAN, EM
MADIX, RJ
机构：
[1] Department of Chemical Engineering, Stanford University, Stanford
来源：
JOURNAL OF CATALYSIS | 1979年 / 56卷 / 03期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0021-9517(79)90127-1
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 decomposition of formaldehyde on a clean (110)-oriented Cu Ni single crystal was studied by flash desorption spectroscopy and Auger electron spectroscopy. The copper/nickel alloy surfaces were varied in composition from 100% Ni to 35% Ni. At 190 °K formaldehyde appeared to adsorb dissociatively to form H(a) and CO(a). The desorption of CO was first order while the desorption of H2 obeyed complex kinetics. The H2 and CO production from H2CO decreased with increasing surface copper content. This effect was due to the requirement of a cluster of two nickel atoms on the surface to decompose the formaldehyde molecule. The possible stabilization of an H-CO surface intermediate on the Cu-rich surfaces is discussed. © 1979.
引用
收藏
页码：349 / 357
页数：9
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