Compensation effect of benzene hydrogenation on Pt(111) and Pt(100) analyzed by the selective energy transfer model

被引：15

作者：

Bratlie, Kaitlin M. ^{[1
,2
]}

Li, Yimin ^{[1
,2
]}

Larsson, Ragnar ^{[1
,3
]}

Somorjai, Gabor A. ^{[1
,2
,3
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[3] Lund Univ, S-22100 Lund, Sweden

来源：

CATALYSIS LETTERS | 2008年 / 121卷 / 3-4期

关键词：

catalytic reaction; C6; hydrocarbons; Pt(111); Pt(100); hydrogenation; compensation effect; isokinetic temperature; benzene; selective energy transfer model;

D O I：

10.1007/s10562-007-9372-6

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：

Kinetic measurements at low temperatures (310-360 K) using gas chromatography (GC) for benzene hydrogenation on Pt(100) and Pt(111) single crystal surfaces have been carried out at Torr pressures. These kinetic measurements demonstrated a linear compensation effect for the production of cyclohexane. A detailed application of the model of selective energy transfer to the experimentally obtained results yields the vibrational frequency of the adsorbate leading to reaction. This frequency is attributed to ring distortion modes. The vibrational frequency of the heat bath, or catalyst, is ascribed to a Pt-H mode. An approximate heat of adsorption of the reacting molecule is also calculated from the model.

引用

页码：173 / 178

页数：6

共 28 条

[1] VIBRATIONAL-MODES OF HYDROGEN ADSORBED ON PT(111) - ADSORPTION SITE AND EXCITATION MECHANISM [J].