期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 106, 期 35, 页码 8070-8078出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp0143847
关键词
-
The thermodynamically favored reaction between water and magnesium, Mg + 2H(2)O --> Mg(OH)(2) + H-2, is normally sluggish, but it becomes reasonably rapid when a milled composite of powdered magnesium metal and powdered iron (1 - 10 mol %) is used with sodium chloride solutions. Iron functions as an activator, and chloride functions as a catalyst that depassivates the outermost oxide/hydroxide layer and allows water to penetrate to the activated magnesium surface. Adding solutes such as sodium nitrate, copper(II) chloride, and sodium trichloroacetate to the reaction mixture suppresses the yield of dihydrogen. Manometric and calorimetric studies on the stoichiometry and kinetics of the reaction between Mg(Fe) powders and aqueous solutions demonstrate that short-lived, partially, and fully solvated electrons (e(p)(-) and e(s)(-)) are precursors of dihydrogen and that they and the hydrogen atoms (H-.) formed from them can be scavenged, resulting in suppressed dihydrogen yields.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据