METHANOL ADSORPTION AND DECOMPOSITION ON (1 X 1)PT(110) AND (2 X 1)PT(110) - IDENTIFICATION OF THE ACTIVE-SITE FOR CARBON-OXYGEN BOND SCISSION DURING ALCOHOL DECOMPOSITION ON PLATINUM

被引:45
作者
WANG, J [1 ]
MASEL, RI [1 ]
机构
[1] UNIV ILLINOIS,1209 W CALIFORNIA ST,URBANA,IL 61801
基金
美国国家科学基金会;
关键词
D O I
10.1016/0021-9517(90)90017-E
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 and decomposition of methanol are examined on (1 × 1)Pt(110) and (2 × 1)Pt(110). It was found that (1 × 1)Pt(110) and (2 × 1)Pt(110) behave very differently even though they have a very similar surface structure. When methanol decomposes on (2 × 1)Pt(110) only CO and H2 are formed. However, when methanol decomposes on (1 × 1)Pt(110) the CO bonds break at low temperature to yield water, methane, hydrogen, and adsorbed carbon. Yet, all of the steps, kinks, and atoms of special coordination present on (1 × 1)Pt(110) are also present on (2 × 1)Pt(110). These results imply that the active site for CO bond scission in methanol consists of an ensemble of many atoms rather than a step, kink, or atom of special coordination. © 1990.
引用
收藏
页码:519 / 531
页数:13
相关论文
共 23 条