New treatment method for dilute hydrochloric acid using magnesium-aluminum oxide

被引：54

作者：

Kameda, T ^{[1
]}

Yoshioka, T ^{[1
]}

Uchida, M ^{[1
]}

Miyano, Y ^{[1
]}

Okuwaki, A ^{[1
]}

机构：

[1] Tohoku Univ, Dept Appl Chem, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2002年 / 75卷 / 03期

关键词：

D O I：

10.1246/bcsj.75.595

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Magnesium-aluminum oxide (Mg-Al oxide) was shown to be superior to CO32- intercalated hydrotalcite (CO3-HT) for removing dilute hydrochloric acid. Cl- in a 0.5 M HCl solution could be quantitatively removed by adding 1.75-times the stoichiometric quantity of Mg0.70Al0.20O at 60 degreesC for 1 h. The solution after the reaction was weakly alkaline. This reaction could be adequately described as being first order for the HCl concentration, and the apparent activation energy was 49.3 kJ mol(-1). The amount of Cl- removal per 1 g of Mg-Al oxide in the first use was 3.08 meq at a Mg/Al molar ratio of 2.0 and 2.89 meq at a ratio of 3.5.

引用

页码：595 / 599

页数：5

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