Chemistry of Ethylene Glycol on a Rh(100) Single-Crystal Surface

被引：20

作者：

Jansen, Maarten M. M. ^{[1
]}

Nieuwenhuys, Ben E. ^{[1
]}

Niemantsverdriet, Hans ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands

来源：

CHEMSUSCHEM | 2009年 / 2卷 / 09期

关键词：

ethylene glycol; IR spectroscopy; rhodium; surface chemistry; vibration spectroscopy; ENERGY-ELECTRON DIFFRACTION; THERMAL-DESORPTION; ETHANOL DECOMPOSITION; BIMETALLIC SURFACES; RH(111) SURFACE; LOW-TEMPERATURE; BOND SCISSION; COADSORBED CO; ADSORPTION; OXIDATION;

D O I：

10.1002/cssc.200900153

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption and decomposition of ethylene glycol on Rh(100) have been studied with temperature-programmed reaction spectroscopy and reflection absorption infrared spectroscopy. Ethylene glycol adsorbs onto the surface via the hydroxyl groups. At 150 K, both hydroxyl bonds are broken, forming an ethylenedioxy intermediate. At high coverage, a portion of the ethylene glycol molecules dehydrogenate only one hydroxyl bond, forming a monodentate species. These intermediates decompose further, with complete dehydrogenation and simultaneous C-C bond breaking occurring at around 290 K. Hydrogen and carbon monoxide are formed, which desorb at 290 and 500 K, respectively.

引用

页码：883 / 886

页数：4

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