Effect of additives and particle size on the hydrolysis of aluminum at 100° to 110°C
Effect of additives and particle size on the hydrolysis of aluminum at 100° to 110°C
复制标题
添加剂和粒度对 100° 至 110°C 铝水解的影响
DOI：
10.1016/0304-3894(77)80020-4
复制
发表时间：
1977
影响因子：
13.6
通讯作者：
D. M. French
中科院分区：
文献类型：
--
作者：
A. S. Tompa;D. M. French
The reaction of aluminum powder with water at 1000 to 110oC was carried out in glass pressure bottles and was followed by the change in gas pressure as a function of time. It was observed that as the particle size of aluminum increased, the percentage reacted decreased. The proportions of aluminum found to react under conditions used in solid propellant degradation was of minor significance. Hydrogen was involved, however, in sufficient quantity to form explosive mixtures with air and to raise the pressure of closed systems by an atmosphere or more. In the presence of oxidizing salts some of the hydrogen was oxidized and chloride was formed from ammonium and potassium perchlorates. Nitrates were reduced to ammonia. The proportion of these salts reduced was small, however, and was a linear function of the concentration of the additive.The effect on the hydrolysis rate of aluminum by Perchlorate and halide salts solution appeared to correlate with the ionic radius of the additive cation when the anion was held constant and with the additive anion when the cation was held constant. As the radius decreased the hydrolysis rate increased.The effect of some oxidants on the hydrolysis rate of aluminum appeared to depend upon the final pH of the solution; the rate increased in highly basic solution and decreased in slightly acidic or neutral solution compared to water alone. A slight reaction of aluminum powder with alcohols was observed at 1000C. The rate of reaction increased as the dielectric constant of the alcohol increased.
