铜粉结构对氧化铈催化特性的影响

IF 0.6 4区 材料科学 Q4 CRYSTALLOGRAPHY Crystallography Reports Pub Date : 2024-07-25 DOI:10.1134/S1063774524600339
O. M. Zhigalina, O. S. Morozova, D. N. Khmelenin, E. N. Cherkovskiy, A. A. Firsova, V. G. Basu, G. A. Vorobieva
{"title":"铜粉结构对氧化铈催化特性的影响","authors":"O. M. Zhigalina,&nbsp;O. S. Morozova,&nbsp;D. N. Khmelenin,&nbsp;E. N. Cherkovskiy,&nbsp;A. A. Firsova,&nbsp;V. G. Basu,&nbsp;G. A. Vorobieva","doi":"10.1134/S1063774524600339","DOIUrl":null,"url":null,"abstract":"<p>The influence of the structure of copper powder particles on the catalytic activity of the CeO<sub>2</sub>/Cu catalyst was studied using the methods of X-ray diffraction, electron microscopy, electron diffraction, energy dispersive X-ray analysis, as well as temperature-programmed reduction of CO (CO-TPR). Nanocomposites were obtained by mechanochemical synthesis using copper particles differing in size and morphology: micron-sized dendrites and nanoparticles. It was shown that the activity of the catalyst obtained from nanosized copper is two times higher, which is due to the presence of Cu<sub><i>x</i></sub>O clusters located on the atomic steps of cerium oxide nanocrystals. This arrangement of clusters apparently prevents blocking of activating centers. Thus, the surface structure of cerium oxide particles formed when using nanosized copper powder is a key factor responsible for the catalytic activity.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Copper Powder Structure on the Catalytic Properties of Cerium Oxide\",\"authors\":\"O. M. Zhigalina,&nbsp;O. S. Morozova,&nbsp;D. N. Khmelenin,&nbsp;E. N. Cherkovskiy,&nbsp;A. A. Firsova,&nbsp;V. G. Basu,&nbsp;G. A. Vorobieva\",\"doi\":\"10.1134/S1063774524600339\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The influence of the structure of copper powder particles on the catalytic activity of the CeO<sub>2</sub>/Cu catalyst was studied using the methods of X-ray diffraction, electron microscopy, electron diffraction, energy dispersive X-ray analysis, as well as temperature-programmed reduction of CO (CO-TPR). Nanocomposites were obtained by mechanochemical synthesis using copper particles differing in size and morphology: micron-sized dendrites and nanoparticles. It was shown that the activity of the catalyst obtained from nanosized copper is two times higher, which is due to the presence of Cu<sub><i>x</i></sub>O clusters located on the atomic steps of cerium oxide nanocrystals. This arrangement of clusters apparently prevents blocking of activating centers. Thus, the surface structure of cerium oxide particles formed when using nanosized copper powder is a key factor responsible for the catalytic activity.</p>\",\"PeriodicalId\":527,\"journal\":{\"name\":\"Crystallography Reports\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-07-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Crystallography Reports\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1063774524600339\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CRYSTALLOGRAPHY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crystallography Reports","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1063774524600339","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}
引用次数: 0

摘要

摘要 利用 X 射线衍射、电子显微镜、电子衍射、能量色散 X 射线分析以及 CO 的温度编程还原(CO-TPR)等方法研究了铜粉颗粒结构对 CeO2/Cu 催化剂催化活性的影响。利用不同大小和形态的铜颗粒(微米大小的树枝状颗粒和纳米颗粒),通过机械化学合成法获得了纳米复合材料。研究表明,由纳米铜制成的催化剂的活性要高出两倍,这是因为在纳米氧化铈晶体的原子阶上存在 CuxO 簇。团簇的这种排列方式显然可以防止活化中心受阻。因此,使用纳米铜粉形成的氧化铈颗粒的表面结构是催化活性的关键因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

摘要图片

摘要图片

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Influence of Copper Powder Structure on the Catalytic Properties of Cerium Oxide

The influence of the structure of copper powder particles on the catalytic activity of the CeO2/Cu catalyst was studied using the methods of X-ray diffraction, electron microscopy, electron diffraction, energy dispersive X-ray analysis, as well as temperature-programmed reduction of CO (CO-TPR). Nanocomposites were obtained by mechanochemical synthesis using copper particles differing in size and morphology: micron-sized dendrites and nanoparticles. It was shown that the activity of the catalyst obtained from nanosized copper is two times higher, which is due to the presence of CuxO clusters located on the atomic steps of cerium oxide nanocrystals. This arrangement of clusters apparently prevents blocking of activating centers. Thus, the surface structure of cerium oxide particles formed when using nanosized copper powder is a key factor responsible for the catalytic activity.

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
Crystallography Reports
Crystallography Reports 化学-晶体学
CiteScore
1.10
自引率
28.60%
发文量
96
审稿时长
4-8 weeks
期刊介绍: Crystallography Reports is a journal that publishes original articles short communications, and reviews on various aspects of crystallography: diffraction and scattering of X-rays, electrons, and neutrons, determination of crystal structure of inorganic and organic substances, including proteins and other biological substances; UV-VIS and IR spectroscopy; growth, imperfect structure and physical properties of crystals; thin films, liquid crystals, nanomaterials, partially disordered systems, and the methods of studies.
期刊最新文献
Light-Emitting AlGaAs/GaAs Diodes Based on InGaAs Strain-Compensated Quantum Wells with Minimized Internal Losses Caused by 940-nm Radiation Absorption Study of the Features of Concentration Inhomogeneities during the On-Ground-Based Processing of the Space Experiment on the Ge(Ga) Crystal Growth Hyperspectral X-Ray Imaging For Nanometrology Study of the Electrical Properties and Characterization of a Metal‒Polymer Conductor Based on Silver-Containing Nanowires On the Mechanism of Growth of Lactose Crystals from Supersaturated Solutions
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1