CO2 Hydrogenation to Methanol over Mesoporous SiO2-Coated Cu-Based Catalysts

IF 4.8 Q2 NANOSCIENCE & NANOTECHNOLOGY ACS Nanoscience Au Pub Date : 2024-07-18 DOI:10.1021/acsnanoscienceau.4c0001610.1021/acsnanoscienceau.4c00016
Luiz H. Vieira*, Marco A. Rossi, Letícia F. Rasteiro, José M. Assaf and Elisabete M. Assaf*, 
{"title":"CO2 Hydrogenation to Methanol over Mesoporous SiO2-Coated Cu-Based Catalysts","authors":"Luiz H. Vieira*,&nbsp;Marco A. Rossi,&nbsp;Letícia F. Rasteiro,&nbsp;José M. Assaf and Elisabete M. Assaf*,&nbsp;","doi":"10.1021/acsnanoscienceau.4c0001610.1021/acsnanoscienceau.4c00016","DOIUrl":null,"url":null,"abstract":"<p >Although chemical promotion led to essential improvements in Cu-based catalysts for CO<sub>2</sub> hydrogenation to methanol, surpassing structural limitations such as active phase aggregation under reaction conditions remains challenging. In this report, we improved the textural properties of Cu/In<sub>2</sub>O<sub>3</sub>/CeO<sub>2</sub> and Cu/In<sub>2</sub>O<sub>3</sub>/ZrO<sub>2</sub> catalysts by coating the nanoparticles with a mesoporous SiO<sub>2</sub> shell. This strategy limited particle size up to 3.5 nm, increasing metal dispersion and widening the metal–metal oxide interface region. Chemometric analysis revealed that these structures could maintain high activity and selectivity in a wide range of reaction conditions, with methanol space-time yields up to 4 times higher than those of the uncoated catalysts.</p>","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":null,"pages":null},"PeriodicalIF":4.8000,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsnanoscienceau.4c00016","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Nanoscience Au","FirstCategoryId":"1085","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsnanoscienceau.4c00016","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"NANOSCIENCE & NANOTECHNOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Although chemical promotion led to essential improvements in Cu-based catalysts for CO2 hydrogenation to methanol, surpassing structural limitations such as active phase aggregation under reaction conditions remains challenging. In this report, we improved the textural properties of Cu/In2O3/CeO2 and Cu/In2O3/ZrO2 catalysts by coating the nanoparticles with a mesoporous SiO2 shell. This strategy limited particle size up to 3.5 nm, increasing metal dispersion and widening the metal–metal oxide interface region. Chemometric analysis revealed that these structures could maintain high activity and selectivity in a wide range of reaction conditions, with methanol space-time yields up to 4 times higher than those of the uncoated catalysts.

Abstract Image

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
在介孔二氧化硅包覆铜基催化剂上将二氧化碳加氢转化为甲醇
尽管化学促进作用对用于二氧化碳加氢制甲醇的铜基催化剂进行了重大改进,但超越结构限制(如反应条件下的活性相聚集)仍是一项挑战。在本报告中,我们通过在纳米颗粒上包覆介孔二氧化硅外壳,改善了 Cu/In2O3/CeO2 和 Cu/In2O3/ZrO2 催化剂的质构特性。这种策略将颗粒尺寸限制在 3.5 nm 以下,增加了金属的分散性,扩大了金属-金属氧化物界面区域。化学计量分析表明,这些结构可在多种反应条件下保持高活性和选择性,甲醇时空产率比未涂层催化剂高出 4 倍。
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 去求助
来源期刊
ACS Nanoscience Au
ACS Nanoscience Au 材料科学、纳米科学-
CiteScore
4.20
自引率
0.00%
发文量
0
期刊介绍: ACS Nanoscience Au is an open access journal that publishes original fundamental and applied research on nanoscience and nanotechnology research at the interfaces of chemistry biology medicine materials science physics and engineering.The journal publishes short letters comprehensive articles reviews and perspectives on all aspects of nanoscience and nanotechnology:synthesis assembly characterization theory modeling and simulation of nanostructures nanomaterials and nanoscale devicesdesign fabrication and applications of organic inorganic polymer hybrid and biological nanostructuresexperimental and theoretical studies of nanoscale chemical physical and biological phenomenamethods and tools for nanoscience and nanotechnologyself- and directed-assemblyzero- one- and two-dimensional materialsnanostructures and nano-engineered devices with advanced performancenanobiotechnologynanomedicine and nanotoxicologyACS Nanoscience Au also publishes original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials engineering physics bioscience and chemistry into important applications of nanomaterials.
期刊最新文献
Issue Publication Information Issue Editorial Masthead Synergistic Effects of ZnO@NiM′-Layered Double Hydroxide (M′ = Mn, Co, and Fe) Composites on Supercapacitor Performance: A Comparative Evaluation Crystal Facet Regulation and Ru Incorporation of Co3O4 for Acidic Oxygen Evolution Reaction Electrocatalysis DNA-Mediated Carbon Nanotubes Heterojunction Assembly
×
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