通过准弹性和非弹性中子散射探测铜负载沸石中的甲醇动态

IF 4.3 3区工程技术 Q2 ENGINEERING, CHEMICAL

Frontiers of Chemical Science and Engineering Pub Date : 2024-09-20 DOI:10.1007/s11705-024-2506-1

Vainius Skukauskas, Nicolas De Souza, Emma K. Gibson, Ian P. Silverwood

{"title":"通过准弹性和非弹性中子散射探测铜负载沸石中的甲醇动态","authors":"Vainius Skukauskas, Nicolas De Souza, Emma K. Gibson, Ian P. Silverwood","doi":"10.1007/s11705-024-2506-1","DOIUrl":null,"url":null,"abstract":"<div><p>The dynamics of methanol within prototype methanol synthesis catalysts were studied using quasi-elastic neutron scattering. Three Cu-exchanged zeolites (mordenite, SSZ-13 and ZSM-5) were studied after methanol loading and showed jump diffusion coefficients between 1.04 × 10<sup>−10</sup> and 2.59 × 10<sup>−10</sup> m<sup>2</sup>·s<sup>−1</sup>. Non-Arrhenius behavior was observed with varying temperature due to methoxy formation at Brønsted acid sites and methanol clustering around copper cations.\n</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 1","pages":""},"PeriodicalIF":4.3000,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Probing the dynamics of methanol in copper-loaded zeolites via quasi-elastic and inelastic neutron scattering\",\"authors\":\"Vainius Skukauskas, Nicolas De Souza, Emma K. Gibson, Ian P. Silverwood\",\"doi\":\"10.1007/s11705-024-2506-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The dynamics of methanol within prototype methanol synthesis catalysts were studied using quasi-elastic neutron scattering. Three Cu-exchanged zeolites (mordenite, SSZ-13 and ZSM-5) were studied after methanol loading and showed jump diffusion coefficients between 1.04 × 10<sup>−10</sup> and 2.59 × 10<sup>−10</sup> m<sup>2</sup>·s<sup>−1</sup>. Non-Arrhenius behavior was observed with varying temperature due to methoxy formation at Brønsted acid sites and methanol clustering around copper cations.\\n</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":571,\"journal\":{\"name\":\"Frontiers of Chemical Science and Engineering\",\"volume\":\"19 1\",\"pages\":\"\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-09-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Frontiers of Chemical Science and Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11705-024-2506-1\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers of Chemical Science and Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11705-024-2506-1","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

摘要

利用准弹性中子散射法研究了甲醇合成催化剂原型中甲醇的动态。研究了三种铜交换沸石（莫代石、SSZ-13 和 ZSM-5）在装载甲醇后的跃迁扩散系数，其跃迁扩散系数介于 1.04 × 10-10 和 2.59 × 10-10 m2-s-1 之间。随着温度的变化，观察到了非阿伦尼斯行为，这是由于在布氏酸位点形成了甲氧基，以及甲醇聚集在铜阳离子周围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Probing the dynamics of methanol in copper-loaded zeolites via quasi-elastic and inelastic neutron scattering

The dynamics of methanol within prototype methanol synthesis catalysts were studied using quasi-elastic neutron scattering. Three Cu-exchanged zeolites (mordenite, SSZ-13 and ZSM-5) were studied after methanol loading and showed jump diffusion coefficients between 1.04 × 10⁻¹⁰ and 2.59 × 10⁻¹⁰ m²·s⁻¹. Non-Arrhenius behavior was observed with varying temperature due to methoxy formation at Brønsted acid sites and methanol clustering around copper cations.

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

Frontiers of Chemical Science and Engineering ENGINEERING, CHEMICAL-

CiteScore

7.60

自引率

6.70%

发文量

868

审稿时长

1 months

期刊介绍： Frontiers of Chemical Science and Engineering presents the latest developments in chemical science and engineering, emphasizing emerging and multidisciplinary fields and international trends in research and development. The journal promotes communication and exchange between scientists all over the world. The contents include original reviews, research papers and short communications. Coverage includes catalysis and reaction engineering, clean energy, functional material, nanotechnology and nanoscience, biomaterials and biotechnology, particle technology and multiphase processing, separation science and technology, sustainable technologies and green processing.