癸胺与I~-对铝的协同缓蚀作用

应用动电位扫描法和交流阻抗法研究了盐酸介质中KI和癸胺对铝的协同缓蚀作用.结果表明:铝在盐酸中的腐蚀以阴极控制为主;KI和癸胺有较好的协同作用,癸胺在协同体系中对铝的缓蚀起主导作用.     

Viscosity of binary mixtures. II. n-butyl,n-hexyl,n-octyl,n-decyl,and n-dodecylamine with benzene and n-hexyl,n-decyl,and n-dodecylamine with cyclohexane

Viscosities of eight binary systems of n-butylamine, n-hexylamine, n-octylamine, n-decylamine, and n-dodecylamine with benzene and n-hexylamine, n-decylamine, and n-dodecylamine with cyclohexane have been measured at 303.15 K with an Ubbelohde suspended level viscometer. Based on Eyring's theory, values of excess Gibbs energy of activation G ^*E of viscous flow have been calculated. Deviations of viscosities from linear dependence on the mole fraction and values of G ^*E are attributed to H-bonding and to the size of alkylamine molecules. The free volume theory of Prigogine-Flory-Patterson in combination with the work of Bloomfield-Dewan has been used to estimate the excess viscosity In and the terms corresponding to enthalpy, entropy, and free volume contributions for 10 binary mixtures containing n-butyl, n-hexyl, n-octyl, n-decyl, and n-dodecylamine with benzene and cyclohexane.