著者

松田 勝彦 田中 信寛 真嶋 宏

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.93, no.1078, pp.969-974, 1977-12-25 (Released:2011-07-13)

参考文献数

12

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The dissolution of hydrogen gas in aqueous solutions was studied in connection with hydrogen reduction of metals from solutions. Dissolution rates as well as solubilities of hydrogen gas in various aqueous solutions were determined by a pressure transducer technique.The main results obtained are as follows:(1) Initial dissolution rates of hydrogen gas in pure water increase linearly with the increase in hydrogen pressure.(2) Hydrogen dissolution in aqueous solutions is accelerated by strong agitaion and high temperature, obeying an empirical formula, R=c exp (αω), in which R is the dissolution rate. c is the function of temperature.α is a constant and ω is the stirring speed.(3) Activation energy for hydrogen dissolution in pure water was apparently found to be around 3 kcal/mol, and this suggests that gaseous hydrogen dissolves at a rate which is diffusion-controlled in water phase.(4) The dissolution rates of hydrogen gas in aqueous solutions depend primarily on its solubilities which is decreasingly affected by the addition of solutes.