INTERACTION OF CYCLOHEXADIENE WITH PT(111) STUDIED BY BPTDS AND HREELS

被引：48

作者：

HUGENSCHMIDT, MB ^{[1
]}

DIAZ, AL ^{[1
]}

CAMPBELL, CT ^{[1
]}

机构：

[1] UNIV WASHINGTON,DEPT CHEM,BG-10,SEATTLE,WA 98195

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 14期

关键词：

D O I：

10.1021/j100193a060

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 interactions of 1,3- and 1,4-cyclohexadiene with Pt(1 1 1) have been studied with bismuth postdosing thermal desorption mass spectroscopy (BPTDS) and high-resolution electron energy loss spectroscopy (HREELS). Both species adsorb molecularly on Pt(1 1 1) at 100 K. Upon warming, both species dehydrogenate completely to produce adsorbed benzene. The reaction occurs at about 230-260 K with an activation energy of 14 +/- 2 kcal/mol. The adsorbed benzene thus produced either dehydrogenates, ultimately to graphitic carbon, or desorbs, both occurring above 450 K. When cyclohexadiene is coadsorbed with hydrogen adatoms, no significant amounts of hydrogenated products (<2%) are observed in normal TDS or in BPTDS.

引用

页码：5974 / 5978

页数：5

共 24 条

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