膨润土合成的沸石 LTA 对镉、镍、钴和铁的吸附机理的动态模拟分析

IF 4.8 3区 材料科学 Q1 CHEMISTRY, APPLIED
Imad El Bojaddayni , Youssef El Ouardi , Mohammed Elkabous , Nafea Achalhi , Alharith Yousuf , Yasser Karzazi , Abdelkrim Ouammou , Sami Virolainen
{"title":"膨润土合成的沸石 LTA 对镉、镍、钴和铁的吸附机理的动态模拟分析","authors":"Imad El Bojaddayni ,&nbsp;Youssef El Ouardi ,&nbsp;Mohammed Elkabous ,&nbsp;Nafea Achalhi ,&nbsp;Alharith Yousuf ,&nbsp;Yasser Karzazi ,&nbsp;Abdelkrim Ouammou ,&nbsp;Sami Virolainen","doi":"10.1016/j.micromeso.2024.113433","DOIUrl":null,"url":null,"abstract":"<div><div>A practical and cost-effective method was successfully developed for synthesizing high-performance zeolite LTA from bentonite clay by fine-tuning activation steps and crystallization parameters. The optimal synthesis conditions and crystallization mechanism were investigated. The synthesized zeolites were characterized using XRD, FTIR, and SEM-EDS techniques. The results highlight the significant influence of factors such as crystallization temperature, duration, and the effect of sodium hydroxide concentration on the formation of zeolites. Optimal conditions set at a crystallization temperature of 97 °C, duration of 24 h, and NaOH concentration of 4M yielded pure zeolite LTA, boasting high crystallinity levels. Achieving a peak crystallinity of 82 %. The obtained zeolite LTA showed an exceptional Cd (II) ion exchange capacity. A mechanism involving adsorption of Cd<sup>2</sup>⁺, Ni<sup>2</sup>⁺, Co<sup>2</sup>⁺, and Fe<sup>2</sup>⁺ ions in zeolite LTA at the α and β-cages has been proposed using dynamic simulation. This mechanism supports all experimental results, in particular for LTA- Cd<sup>2</sup>⁺, Cd<sup>2</sup>⁺ ions are predominantly distributed in both α and β-cages, with a denser distribution in the α-cages, indicating a strong preference for these sites due to their geometric and electronic environment. The resulted zeolite LTA demonstrated ability for successful Cd (II) removal, affirming its utility as an efficient material in environmental remediation industries.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"384 ","pages":"Article 113433"},"PeriodicalIF":4.8000,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dynamic simulation-driven analysis of cadmium, nickel, cobalt, and iron adsorption mechanisms in zeolite LTA synthesized from bentonite\",\"authors\":\"Imad El Bojaddayni ,&nbsp;Youssef El Ouardi ,&nbsp;Mohammed Elkabous ,&nbsp;Nafea Achalhi ,&nbsp;Alharith Yousuf ,&nbsp;Yasser Karzazi ,&nbsp;Abdelkrim Ouammou ,&nbsp;Sami Virolainen\",\"doi\":\"10.1016/j.micromeso.2024.113433\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A practical and cost-effective method was successfully developed for synthesizing high-performance zeolite LTA from bentonite clay by fine-tuning activation steps and crystallization parameters. The optimal synthesis conditions and crystallization mechanism were investigated. The synthesized zeolites were characterized using XRD, FTIR, and SEM-EDS techniques. The results highlight the significant influence of factors such as crystallization temperature, duration, and the effect of sodium hydroxide concentration on the formation of zeolites. Optimal conditions set at a crystallization temperature of 97 °C, duration of 24 h, and NaOH concentration of 4M yielded pure zeolite LTA, boasting high crystallinity levels. Achieving a peak crystallinity of 82 %. The obtained zeolite LTA showed an exceptional Cd (II) ion exchange capacity. A mechanism involving adsorption of Cd<sup>2</sup>⁺, Ni<sup>2</sup>⁺, Co<sup>2</sup>⁺, and Fe<sup>2</sup>⁺ ions in zeolite LTA at the α and β-cages has been proposed using dynamic simulation. This mechanism supports all experimental results, in particular for LTA- Cd<sup>2</sup>⁺, Cd<sup>2</sup>⁺ ions are predominantly distributed in both α and β-cages, with a denser distribution in the α-cages, indicating a strong preference for these sites due to their geometric and electronic environment. The resulted zeolite LTA demonstrated ability for successful Cd (II) removal, affirming its utility as an efficient material in environmental remediation industries.</div></div>\",\"PeriodicalId\":392,\"journal\":{\"name\":\"Microporous and Mesoporous Materials\",\"volume\":\"384 \",\"pages\":\"Article 113433\"},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2024-11-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Microporous and Mesoporous Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1387181124004554\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microporous and Mesoporous Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1387181124004554","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0

摘要

通过对活化步骤和结晶参数进行微调,成功开发出了一种从膨润土中合成高性能沸石 LTA 的实用且具有成本效益的方法。研究了最佳合成条件和结晶机理。利用 XRD、FTIR 和 SEM-EDS 技术对合成的沸石进行了表征。结果表明,结晶温度、持续时间和氢氧化钠浓度等因素对沸石的形成有重大影响。在结晶温度为 97 °C、持续时间为 24 小时、NaOH 浓度为 4M 的最佳条件下,产生了高结晶度的纯沸石 LTA。最高结晶度达到 82%。所获得的沸石 LTA 具有优异的镉(II)离子交换能力。利用动态模拟提出了沸石 LTA α 和 β 笼中 Cd2⁺、Ni2⁺、Co2⁺ 和 Fe2⁺离子的吸附机理。该机制支持所有的实验结果,特别是对于 LTA- Cd2⁺,Cd2⁺ 离子主要分布在 α 和 β 笼中,在 α 笼中分布更密集,这表明由于其几何和电子环境,Cd2⁺ 离子对这些位点有强烈的偏好。所制备的沸石 LTA 具有成功去除镉(II)的能力,这肯定了它在环境修复行业中作为一种高效材料的实用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Dynamic simulation-driven analysis of cadmium, nickel, cobalt, and iron adsorption mechanisms in zeolite LTA synthesized from bentonite

Dynamic simulation-driven analysis of cadmium, nickel, cobalt, and iron adsorption mechanisms in zeolite LTA synthesized from bentonite
A practical and cost-effective method was successfully developed for synthesizing high-performance zeolite LTA from bentonite clay by fine-tuning activation steps and crystallization parameters. The optimal synthesis conditions and crystallization mechanism were investigated. The synthesized zeolites were characterized using XRD, FTIR, and SEM-EDS techniques. The results highlight the significant influence of factors such as crystallization temperature, duration, and the effect of sodium hydroxide concentration on the formation of zeolites. Optimal conditions set at a crystallization temperature of 97 °C, duration of 24 h, and NaOH concentration of 4M yielded pure zeolite LTA, boasting high crystallinity levels. Achieving a peak crystallinity of 82 %. The obtained zeolite LTA showed an exceptional Cd (II) ion exchange capacity. A mechanism involving adsorption of Cd2⁺, Ni2⁺, Co2⁺, and Fe2⁺ ions in zeolite LTA at the α and β-cages has been proposed using dynamic simulation. This mechanism supports all experimental results, in particular for LTA- Cd2⁺, Cd2⁺ ions are predominantly distributed in both α and β-cages, with a denser distribution in the α-cages, indicating a strong preference for these sites due to their geometric and electronic environment. The resulted zeolite LTA demonstrated ability for successful Cd (II) removal, affirming its utility as an efficient material in environmental remediation industries.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Microporous and Mesoporous Materials
Microporous and Mesoporous Materials 化学-材料科学:综合
CiteScore
10.70
自引率
5.80%
发文量
649
审稿时长
26 days
期刊介绍: Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信