气候变化领域集成服务门户(CCPortal): Treatment of HCl gas by cyclic use of Mg–Al layered double hydroxide intercalated with CO3 2-

CCPortal

DOI	10.1016/j.apr.2019.11.001
	Treatment of HCl gas by cyclic use of Mg–Al layered double hydroxide intercalated with CO3 2-
	Kameda T.; Tochinai M.; Kumagai S.; Yoshioka T.
发表日期	2020
ISSN	13091042
卷号	11 期号:2
英文摘要	Mg–Al layered double hydroxide intercalated with CO3 2− (CO3•Mg–Al LDH) was investigated for treating HCl gas generated from industrial plants. Specifically, we compared the performance of CO3•Mg–Al LDH and highly reactive Ca(OH)2, and they showed approximately the same HCl removal capacity in conventional methods. For HCl gas (300 ppm, linear velocity 1.0 m/min) at 170 °C, the removals by CO3•Mg–Al LDH at Mg/Al = 2.0 and 4.0 were 93.5% and 93.1% after 90 min, respectively, while that by Ca(OH)2 was 93.3%. This indicates that CO3•Mg–Al LDH could be used in place of slaked lime to treat HCl. After the reaction, the CO3•Mg–Al LDH could be regenerated from Cl•Mg–Al LDH in a CO3 2− anion exchange reaction. Finally, we studied the cyclic use of CO3•Mg–Al LDH by combining HCl treatment with regeneration in Na2CO3 solution. At least 3 adsorption-desorption cycles could be carried out for CO3•Mg–Al LDH at Mg/Al = 2.0 and 4.0, with the final performance being 86% and 94% of the initial value, respectively. © 2020 Turkish National Committee for Air Pollution Research and Control
英文关键词	CO3•Mg–Al layered double hydroxide; Cyclic use; HCl removal
语种	英语
来源期刊	Atmospheric Pollution Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120598
作者单位	Graduate School of Environmental Studies, Tohoku University, 6−6−07 Aoba, Aramaki, Aoba−ku, Sendai, 980-8579, Japan
推荐引用方式 GB/T 7714	Kameda T.,Tochinai M.,Kumagai S.,等. Treatment of HCl gas by cyclic use of Mg–Al layered double hydroxide intercalated with CO3 2-[J],2020,11(2).
APA	Kameda T.,Tochinai M.,Kumagai S.,&Yoshioka T..(2020).Treatment of HCl gas by cyclic use of Mg–Al layered double hydroxide intercalated with CO3 2-.Atmospheric Pollution Research,11(2).
MLA	Kameda T.,et al."Treatment of HCl gas by cyclic use of Mg–Al layered double hydroxide intercalated with CO3 2-".Atmospheric Pollution Research 11.2(2020).