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 , Muhammad Kashif , Wenyi Deng , Bingtao Zhao , 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.
期刊介绍:
Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.