Methanol oxidation to formate on Cu(110) studied by STM

被引：50

作者：

Jones, AH ^{[1
]}

Poulston, S ^{[1
]}

Bennett, RA ^{[1
]}

Bowker, M ^{[1
]}

机构：

[1] UNIV READING,DEPT CHEM,READING CATALYSIS RES CTR,READING RG6 6AD,BERKS,ENGLAND

来源：

SURFACE SCIENCE | 1997年 / 380卷 / 01期

关键词：

copper; low index single crystal surfaces; methanol; scanning tunneling microscopy; solid-gas interfaces; surface chemical reaction;

D O I：

10.1016/S0039-6028(96)01581-6

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：

We present an STM study of methanol oxidation to formate by co-dosing of oxygen and methanol onto Cu(110) at room temperature. Formate results from the reaction of adsorbed methoxy and isolated oxygen adatoms generated during dosing. Methanol-rich gas-phase mixtures have the highest efficiency for formate production generating characteristic alternating formate c(2x2) and O-(2x1) islands in the [001] direction. An oxygen-rich gas-phase composition does not produce formate due to preferential growth of O-(2x1) islands. Formate production at 300 K during co-dosing experiments contrasts with the case of sequential dosing as oxygen (2x1)-reconstructed Cu(110) surfaces are seen to have negligible activity toward formate production when subsequently dosed with methanol at 300 K.

引用

页码：31 / 44

页数：14

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