Adsorption of ethers on fresh surfaces of transition metals formed by scratching under high vacuum.
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Adsorption of ethers were carried out on fresh surfaces of transition metals (Cr, Fe and Ni) formed by scratching under high vacuum conditions. Adsorption rates increased proportionally with the scratching speed, that is, the formation rate of fresh surfaces, at the sample gas pressure of 8×10<SUP>-4</SUP> Pa. The adsorption activity of ethers, which is estimated from the time-dependence curve of pressure decrease owing to adsorption, was affected by alkyl groups. The larger the electron releasing ability of alkyl groups, the higher the adsorption activity of the ether. The adsorption activity of 2-methyl tetra-hydrofuran was lower than that of tertahydrofuran. The result was explained by a steric hindrance of the methyl group. It is concluded that the adsorption activity of ethers was dependent on the electronic structure of lone pair electrons of the ether, even if the fresh surface was formed by mechanical treatment.
- 公益社団法人 日本表面科学会の論文
公益社団法人 日本表面科学会 | 論文
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