Reactivity screening of silica

被引：26

作者：

Funk, S. ^{[1
]}

Nurkic, T. ^{[1
]}

Burghaus, U. ^{[1
]}

机构：

[1] N Dakota State Univ, Dept Chem Biochem & Mol Biol, Fargo, ND 58105 USA

来源：

APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 11期

关键词：

surface chemistry; short chain alkanes; silica; SiO2/Si(100); thermal desorption spectroscopy; molecular beam scattering;

D O I：

10.1016/j.apsusc.2006.10.058

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：

As a screening of the chemical activity of silica [SiO2/Si(1 0 0)], which is one of the most often used supports for nanostructures, thermal desorption spectroscopy data have been gathered for a variety of gases such as n-nonane, n-hexane, n-butane, iso-butane, ethane, CO2, CO, O-2, and H/H-2. Whereas, the alkanes with chain lengths larger than three adsorb with large binding energies (E-d = 50-70 kJ/mol), the activity towards the other probe molecules is negligible (< 24 kJ/mol) down to adsorption temperatures of 95 K. The adsorption of n- and iso-butane has additionally been studied by molecular beam scattering and follows standard precursor mediated adsorption dynamics. (c) 2006 Elsevier B.V All rights reserved.

引用

页码：4860 / 4865

页数：6

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