Desorption of Cl- from Mg-Al layered double hydroxide intercalated with Cl- using CO2 gas and water

Tomohito Kameda; Hiroki Uchida; Shogo Kumagai; Yuko Saito; Keiichi Mizushina; Ichirou Itou; Tianye Han; Toshiaki Yoshioka

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Desorption of Cl^- from Mg-Al layered double hydroxide intercalated with Cl^- using CO₂ gas and water

Separation Science and Engineering | Updated：2026-01-06

- Desorption of Cl^- from Mg-Al layered double hydroxide intercalated with Cl^- using CO₂ gas and water
- Desorption of Cl^- from Mg-Al layered double hydroxide intercalated with Cl^- using CO₂ gas and water
- 中国化学工程学报（英文版） 2021年29卷第1期页码：131-134
- Affiliations：
  
  1. Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-, Sendai,ku,Japan,980-8579
  2. Kurita Water Industries Ltd., Nakano Central Park East, 4-10-1 Nakano, Nakano-, Tokyo,ku,Japan,164-0001
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2021
- Accepted：
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Tomohito Kameda, Hiroki Uchida, Shogo Kumagai, 等. Desorption of Cl^- from Mg-Al layered double hydroxide intercalated with Cl^- using CO₂ gas and water[J]. 中国化学工程学报（英文版）, 2021,29(1):131-134.

from Mg-Al layered double hydroxide intercalated with Cl
Tomohito Kameda, Hiroki Uchida, Shogo Kumagai, 等. Desorption of Cl^- from Mg-Al layered double hydroxide intercalated with Cl^- using CO₂ gas and water[J]. 中国化学工程学报（英文版）, 2021,29(1):131-134. DOI：

from Mg-Al layered double hydroxide intercalated with Cl DOI：

摘要

Abstract

Mg-Al layered double hydroxide intercalated with CO

(CO

·Mg-Al LDH) is effective for treating HCl exhaust gas. HCl reacts with CO

in CO

·Mg-Al LDH

resulting in the formation of Cl·Mg-Al LDH. We propose that CO

can be used for the desorption of Cl

from Cl·Mg-Al LDH to regenerate CO

·Mg-Al LDH. Herein

we studied the desorption of Cl

from Cl·Mg-Al LDH by adding water to Cl·Mg-Al LDH and blowing CO

into it. We also analyzed the effects of temperature and water addition speed on the desorption of Cl

from Cl·Mg-Al LDH. Our results show that the added water adhered to Cl·Mg-Al LDH and that CO

in the gaseous phase was dissolved in this adhered water

thus generating CO

. Therefore

anion exchange occurred between CO

and Cl

in the Cl·Mg-Al LDH

thus desorbing Cl

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