SINGLE-CRYSTAL ADSORPTION MICROCALORIMETRY

被引：79

作者：

BORRONIBIRD, CE

ALSARRAF, N

ANDERSSON, S

KING, DA

机构：

[1] Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, Lensfield Road

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 183卷 / 06期

关键词：

D O I：

10.1016/0009-2614(91)80168-W

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：

An ultrahigh vacuum microcalorimeter has been developed which enables calorimetric heats of adsorption to be obtained on single-crystal surfaces, as a detailed function of coverage. The system comprises a pulsed supersonic molecular beam source, an ultrathin metal single crystal, and remote infrared temperature sensing. Sticking probabilities and coverages are determined pulse-wise by the King and Wells method, and heat capacity calibrations are conducted in situ by laser beam pulsing. Results for oxygen on Ni{110} demonstrate excellent sensitivity to 0.01 monolayer pulses.

引用

页码：516 / 520

页数：5

共 15 条

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