Reactivity of Ni-modified MIL-100(Fe) catalysts for C3H6-SCR and reaction mechanism

IF 3.4 3区 化学 Q2 CHEMISTRY, PHYSICAL
Shuying Ning , Muhammad Kashif , Wenyi Deng , Bingtao Zhao , Yaxin Su
{"title":"Reactivity of Ni-modified MIL-100(Fe) catalysts for C3H6-SCR and reaction mechanism","authors":"Shuying Ning ,&nbsp;Muhammad Kashif ,&nbsp;Wenyi Deng ,&nbsp;Bingtao Zhao ,&nbsp;Yaxin Su","doi":"10.1016/j.catcom.2024.106854","DOIUrl":null,"url":null,"abstract":"<div><p>Metal-organic frameworks (MOFs)-based carrier, MIL-100(Fe), was synthesized by hydrothermal method and Ni was supported on the MIL-100(Fe) by wet impregnation method to prepare the catalysts for selective catalytic reduction of NO with C<sub>3</sub>H<sub>6</sub> (C<sub>3</sub>H<sub>6</sub>-SCR). The addition of Ni significantly improved the reactivity of C<sub>3</sub>H<sub>6</sub>-SCR. At 275 °C, the NO conversion of MIL-100(Fe) was 74.5%, whereas the NO conversion of 5.8%Ni/MIL-100(Fe) with 100% N<sub>2</sub> selectivity was 100%. The in-situ DRIFTS prove that the interaction between NO<sub>2</sub><sup>−</sup>/NO<sub>3</sub><sup>−</sup> and C<sub>x</sub>H<sub>y</sub>O<sub>z</sub> substances generated intermediate isocyanates (R-NCO), and the reaction pathway was proposed based on the DRIFTS results to understand the mechanism.</p></div>","PeriodicalId":263,"journal":{"name":"Catalysis Communications","volume":"187 ","pages":"Article 106854"},"PeriodicalIF":3.4000,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1566736724000141/pdfft?md5=66dcc79f8b32bd2a71765466e35ffd33&pid=1-s2.0-S1566736724000141-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Communications","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1566736724000141","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

Abstract

Metal-organic frameworks (MOFs)-based carrier, MIL-100(Fe), was synthesized by hydrothermal method and Ni was supported on the MIL-100(Fe) by wet impregnation method to prepare the catalysts for selective catalytic reduction of NO with C3H6 (C3H6-SCR). The addition of Ni significantly improved the reactivity of C3H6-SCR. At 275 °C, the NO conversion of MIL-100(Fe) was 74.5%, whereas the NO conversion of 5.8%Ni/MIL-100(Fe) with 100% N2 selectivity was 100%. The in-situ DRIFTS prove that the interaction between NO2/NO3 and CxHyOz substances generated intermediate isocyanates (R-NCO), and the reaction pathway was proposed based on the DRIFTS results to understand the mechanism.

Abstract Image

Abstract Image

镍改性 MIL-100(Fe)催化剂在 C3H6-SCR 中的反应活性及反应机理
采用水热法合成了基于金属有机框架(MOFs)的载体 MIL-100(Fe),并通过湿法浸渍法将 Ni 支持在 MIL-100(Fe) 上,制备了用于 C3H6 选择性催化还原 NO(C3H6-SCR)的催化剂。镍的加入大大提高了 C3H6-SCR 的反应活性。275 °C 时,MIL-100(Fe) 的 NO 转化率为 74.5%,而 5.8%Ni/MIL-100(Fe) 的 NO 转化率为 100%,N2 选择性为 100%。原位 DRIFTS 证明,NO2-/NO3- 与 CxHyOz 物质之间的相互作用产生了中间异氰酸酯(R-NCO),并根据 DRIFTS 结果提出了反应途径,以了解其机理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Catalysis Communications
Catalysis Communications 化学-物理化学
CiteScore
6.20
自引率
2.70%
发文量
183
审稿时长
46 days
期刊介绍: Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.
×
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