Application of temperature-programmed desorption to surfaces with physically adsorbed species
Application of temperature-programmed desorption to surfaces with physically adsorbed species
复制标题
程序升温解吸在物理吸附物质表面的应用
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
A. Mackinnon
中科院分区：
文献类型：
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作者：
H. Schreiber;A. Mackinnon
程序升温脱附已应用于物理吸附在金红石颜料表面的脂肪醇和酸。一系列乙醇吸附物的可重复脱附色谱图表明，该系列的吸附涉及相同的位置，并且随着链长的增加，从表面的吸附取向逐渐偏离正常方向。数据还推断，脱附活化能随着链长的增加而减小。酸的吸附物也产生可重复的色谱图，甲酸和醋酸的色谱图在300°C附近出现特征峰。这些吸附物稳定性极高的原因尚未解决。
Temperature-programmed desorption has been applied to physisorbed aliphatic alcohols and acids on a rutile pigment surface. Reproducible desorption chromatograms for a series of alcohol adsorbates indicate that the same sites are involved in adsorbing the series and that the adsorbate orientation from the surface deviates progressively from normal as the chain length increases. The data also infer a reduction in the activation energy of desorption with increasing chain length. Acid adsorbates also generate reproducible chromatograms, those for formic and acetic acid showing characteristic peaks near 300 °C. The reason for the very high stability of these adsorbates has not yet been resolved.