A temperature dependent investigation of the adsorption of CO on Pt(111) using low-temperature single crystal adsorption calorimetry

被引：9
|
作者：
Hoertz, Peter [1 ]
Ruff, Philip [1 ]
Schaefer, Rolf [1 ]
机构：
[1] Tech Univ Darmstadt, Eduard Zintl Inst Anoigan & Phys Chem, D-64287 Darmstadt, Germany
来源：
SURFACE SCIENCE | 2015年 / 639卷
关键词：
Heat of adsorption; Single crystal adsorption calorimetry; CO/Pt(111); Phase transition; MOLECULAR-BEAM; CLEAN PT(111); SURFACES; MICROCALORIMETRY; ENERGIES; OXYGEN; DESORPTION; PHOTOEMISSION; SPECTROSCOPY; ENERGETICS;
D O I：
10.1016/j.susc.2015.04.018
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：
In this work we present a detailed investigation of the adsorption of CO on a well defined Pt(111) surface with low-temperature Single-Crystal-Adsorption-Calorimetry (SCAC) by measuring the coverage dependent adsorption enthalpies at 150 K, 250 K, 300 K and 350 K. Considerable changes in the coverage dependent differential and integral adsorption enthalpies with temperature indicate an order-disorder transition into the fluid phase which becomes apparent in a significant increase in the corresponding heat capacity of the CO adlayer. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：66 / 69
页数：4
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