STRONGLY BONDED OXYGEN IN GRAPHITE - DETECTION BY HIGH-TEMPERATURE TPD AND CHARACTERIZATION

被引：57

作者：

PAN, ZJ ^{[1
]}

YANG, RT ^{[1
]}

机构：

[1] SUNY BUFFALO,DEPT CHEM ENGN,BUFFALO,NY 14260

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1992年 / 31卷 / 12期

关键词：

D O I：

10.1021/ie00012a008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Temperature-programmed desorption (TPD) of oxidized graphites shows significant amounts of Co desorption at temperatures about 1200-degrees-C, in addition to that desorbed below 1200-degrees-C (with a TPD peak at 980-degrees-C). The low-temperature peak has been reported in the literature for a variety of carbons, both graphitic and nongraphitic. X-ray photoelectron spectroscopy (XPS) and molecular orbital theory (MINDO) calculation results indicate that the low-temperature TPD peak is associated with oxygen chemisorbed on the graphite edge planes-{101lBAR} zigzag face and {112lBAR} armchair face-with an XPS O(1s) binding energy of 533 eV, and that the high-temperature TPD peak is associated with oxygen atoms intercalated between basal planes with an XPS O(1s) binding energy of 531.2 eV.

引用

页码：2675 / 2680

页数：6

共 33 条

[1] OXYGEN CHEMISORPTION ON BASAL FACES OF GRAPHITE - XPS STUDY [J].