Structure and reaction pathways of methyl lactate on Pd(111)

被引：7

作者：

Burkholder, Luke

Tysoe, Wilfred T. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53211 USA

来源：

SURFACE SCIENCE | 2009年 / 603卷 / 17期

关键词：

Temperature-programmed desorption; Infrared spectroscopy; Chemisorption; Pd(111); Methyl lactate; ENANTIOSELECTIVE HETEROGENEOUS CATALYSIS; CHIRALLY MODIFIED SURFACES; ETHYL PYRUVATE; ASYMMETRIC HYDROGENATION; ALPHA-KETOESTERS; ADSORPTION; PLATINUM; CHEMISORPTION; DECOMPOSITION; METHANOL;

D O I：

10.1016/j.susc.2009.07.008

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 reaction of methyl lactate (CH3CH(OH)COOCH3) is studied in ultrahigh vacuum on a Pd(1 1 1) surface using temperature-programmed desorption (TPD) and reflection-absorption infrared spectroscopy (RAIRS). Methyl lactate reacts at relatively low temperatures (similar to 220 K) by O-H bond scission. This intermediate can either react with hydrogen to reform methyl lactate at similar to 280-300 K or undergo p-hydride elimination to form flat-lying methyl pyruvate. This decomposes to form acetyl and methoxy carbonyl species as found previously following methyl pyruvate adsorption on Pd(1 1 1). These species predominantly react to form carbon monoxide, methane and hydrogen. (C) 2009 Published by Elsevier B.V.

引用

页码：2714 / 2720

页数：7

共 47 条

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