Article(id=1149773877443785547, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149773869357167407, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2404692, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1719072000000, receivedDateStr=2024-06-23, revisedDate=1738771200000, revisedDateStr=2025-02-06, acceptedDate=null, acceptedDateStr=null, onlineDate=1752057054147, onlineDateStr=2025-07-09, pubDate=1746633600000, pubDateStr=2025-05-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752057054147, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752057054147, creator=13701087609, updateTime=1752057054147, updator=13701087609, issue=Issue{id=1149773869357167407, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='13', pageStart='5273', pageEnd='5704', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752057052207, creator=13701087609, updateTime=1768456769392, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218559268744253990, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149773869357167407, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218559268744253991, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149773869357167407, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=5681, endPage=5688, ext={EN=ArticleExt(id=1149773877762552653, articleId=1149773877443785547, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Performance and Catalytic Mechanism of Cu/TiO
2 Catalyst for Removal of N
2O from Exhaust Gas of NH
3-fuel Engines, columnId=1156262729993277777, journalTitle=Science Technology and Engineering, columnName=Papers·Environmental and Safe Science, runingTitle=null, highlight=null, articleAbstract=
The application of green NH3-fuel on board has been widely regarded as a feasible way to realize the green and low-carbon transformation of the global shipping industry. However, the N2O emission problem of marine NH3-fuel engines has become one of the key technical bottlenecks hindering the development of ammonia-powered ships. To solve this problem, a series of TiO2-supported transition metal oxide catalysts were prepared by impregnation method. The effect of transition metal element types on the N2O removal performance of the catalysts was investigated, and the N2O removal performance of Cux/TiO2 catalysts was optimized. The results show that compared with Fe5/TiO2, Mn5/TiO2, Co5/TiO2 and Ni5/TiO2 catalysts, Cu5/TiO2 catalyst shows excellent catalytic activity, the N2O conversion efficiency can reach 100% at 350 ℃. In addition, Cu5/TiO2 catalyst also has good water resistance. The experimental results show that 5% is the best Cu loading amount. X-ray diffraction, N2 adsorption-desorption, H2 temperature programmed reduction, O2 temperature programmed desorption, and in-situ diffuse reflectance infrared Fourier transform spectroscopy were used to characterize the physicochemical properties and surface reaction intermediates of Cu5/TiO2 catalyst, and the relevant catalytic reaction mechanisms were discussed in depth from multiple perspectives. The characterization results show that compared with other Cux/TiO2 catalysts, Cu5/TiO2 catalyst has higher dispersion of active species, specific surface area, oxygen vacancy content and stronger redox performance, which is conducive to its better catalytic activity. The main active species on the surface of Cu5/TiO2 catalyst are Cu2+ and Cu+ species, and the adsorption and deionization of N2O is a key step in the catalytic reaction.
, correspAuthors=Kun LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Yu GAO, Kun LI), CN=ArticleExt(id=1149773915620339776, articleId=1149773877443785547, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=面向氨燃料发动机废气N
2O去除的Cu/TiO
2催化剂的性能及催化机理, columnId=1156262730140078420, journalTitle=科学技术与工程, columnName=论文·环境科学、安全科学, runingTitle=null, highlight=null, articleAbstract=
推动绿氨燃料上船应用已被普遍认为是实现全球航运业绿色低碳转型可行途径。然而,船用氨燃料发动机存在的N2O排放问题已成为阻碍氨动力船舶发展的关键技术瓶颈之一。针对这一问题,采用浸渍法制备出一系列以TiO2为载体的过渡金属氧化物催化剂,考察了过渡金属元素类型对催化剂N2O去除性能的影响,并研究获得了性能优化的Cux/TiO2催化剂。结果表明,与Fe5/TiO2、Mn5/TiO2、Co5/TiO2、Ni5/TiO2催化剂相比,Cu5/TiO2催化剂显示出优异的催化活性,其N2O转化率可在350 ℃达到100%。除此之外,Cu5/TiO2催化剂还具有良好的抗水性能。5%是最佳的铜负载量。采用X射线衍射、N2吸附脱附、H2程序升温还原、O2程序升温脱附、原位漫反射傅里叶变换红外光谱等表征手段对性能较优的Cu5/TiO2催化剂的物化性质和表面反应中间体进行了表征,从多角度深入讨论了相关催化反应机理。结果显示,与其他Cux/TiO2催化剂相比,Cu5/TiO2催化剂具有较高的活性物种分散度、比表面积、氧空位含量以及较强的氧化还原性能,有利于其展现出较优的催化活性。Cu5/TiO2催化剂表面的主要活性物种为Cu2+和Cu+,N2O的吸附和解离是催化反应的关键步骤。
, correspAuthors=李坤, authorNote=null, correspAuthorsNote=
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高宇(1993—),男,汉族,内蒙古鄂尔多斯人,博士,助理研究员。研究方向:新能源清洁能源船舶。E-mail:gaoyu@wti.ac.cn。
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高宇(1993—),男,汉族,内蒙古鄂尔多斯人,博士,助理研究员。研究方向:新能源清洁能源船舶。E-mail:gaoyu@wti.ac.cn。
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Schematic diagram of catalyst activity testing device, figureFileSmall=46D5lyvTLq8MeQBs6LsEfw==, figureFileBig=TobXKOtfNr49vlHS8xOF1g==, tableContent=null), ArticleFig(id=1175368752511201486, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图1, caption=
催化剂活性测试装置示意图 1为N2气瓶;2为O2气瓶;3为N2O气瓶;4为质量流量计;5为水蒸气发生器;6为气体混合器;7为催化剂床层;8为管式加热炉;9为红外烟气分析仪
, figureFileSmall=46D5lyvTLq8MeQBs6LsEfw==, figureFileBig=TobXKOtfNr49vlHS8xOF1g==, tableContent=null), ArticleFig(id=1175368752574116047, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.2, caption=
Changes of N2O conversion performance of different transition metal catalysts with reaction temperature, figureFileSmall=56AvWSU531e40dTqzT5Y9Q==, figureFileBig=MutKyc9Ltl2plSMA+xorng==, tableContent=null), ArticleFig(id=1175368752628642000, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图2, caption=
不同过渡金属催化剂N2O转化性能随反应温度的变化情况, figureFileSmall=56AvWSU531e40dTqzT5Y9Q==, figureFileBig=MutKyc9Ltl2plSMA+xorng==, tableContent=null), ArticleFig(id=1175368752687362257, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.3, caption=
Changes of N2O conversion performance of Cux/TiO2 catalysts with reaction temperature, figureFileSmall=wRaEb1hu9WNUPWRvPX+BZw==, figureFileBig=mZd+/EMcYs+wTqAFdWbZ0w==, tableContent=null), ArticleFig(id=1175368752746082514, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图3, caption=
Cux/TiO2催化剂的N2O转化率随反应温度的变化情况, figureFileSmall=wRaEb1hu9WNUPWRvPX+BZw==, figureFileBig=mZd+/EMcYs+wTqAFdWbZ0w==, tableContent=null), ArticleFig(id=1175368752800608467, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.4, caption=
Water resistance test results of Cu5/TiO2 catalyst, figureFileSmall=Qb4Nsi7YN9+jF0uvKN3HkA==, figureFileBig=QqWmHHkqg7yuTHQhRRJCRw==, tableContent=null), ArticleFig(id=1175368752892883156, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图4, caption=
Cu5/TiO2催化剂抗水性测试结果, figureFileSmall=Qb4Nsi7YN9+jF0uvKN3HkA==, figureFileBig=QqWmHHkqg7yuTHQhRRJCRw==, tableContent=null), ArticleFig(id=1175368752947409109, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.5, caption=
XRD spectra of Cux/TiO2 catalysts, figureFileSmall=GKOAWOKNAUgcYMJ4EhQlcQ==, figureFileBig=FnqAtg3XjZv0tgCV5EFl6g==, tableContent=null), ArticleFig(id=1175368753001935062, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图5, caption=
Cux/TiO2催化剂的XRD谱图, figureFileSmall=GKOAWOKNAUgcYMJ4EhQlcQ==, figureFileBig=FnqAtg3XjZv0tgCV5EFl6g==, tableContent=null), ArticleFig(id=1175368753056461015, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.6, caption=
N2 adsorption and desorption isotherms of Cux/TiO2 catalysts, figureFileSmall=YSEowt7jJ+MvWstiozydCA==, figureFileBig=+XDphgOzVgqEHe09G6fd5g==, tableContent=null), ArticleFig(id=1175368753115181272, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图6, caption=
Cux/TiO2催化剂的N2吸附脱附等温线 P/P0为相对压力,P0为气体在吸附温度时的饱和蒸汽压,P为吸附平衡时气相的压力
, figureFileSmall=YSEowt7jJ+MvWstiozydCA==, figureFileBig=+XDphgOzVgqEHe09G6fd5g==, tableContent=null), ArticleFig(id=1175368753199067353, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.7, caption=
Pore size distribution of Cux/TiO2 catalysts, figureFileSmall=KAj9ZpNljgd8az2IZc5xTg==, figureFileBig=MrJvgBIt0YHhOSb83BGLHg==, tableContent=null), ArticleFig(id=1175368753266176218, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图7, caption=
Cux/TiO2催化剂的表面孔径分布图, figureFileSmall=KAj9ZpNljgd8az2IZc5xTg==, figureFileBig=MrJvgBIt0YHhOSb83BGLHg==, tableContent=null), ArticleFig(id=1175368753387811035, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.8, caption=
H2-TPR curves of Cux/TiO2 catalysts, figureFileSmall=LLAd8SCAhP1yfLAwAKVXIw==, figureFileBig=q3gNyz0cEJMwP7yH2JZRdw==, tableContent=null), ArticleFig(id=1175368753543000284, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图8, caption=
Cux/TiO2催化剂的H2-TPR曲线图, figureFileSmall=LLAd8SCAhP1yfLAwAKVXIw==, figureFileBig=q3gNyz0cEJMwP7yH2JZRdw==, tableContent=null), ArticleFig(id=1175368753622692061, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.9, caption=
O2-TPD curves of Cux/TiO2 catalysts, figureFileSmall=sEDXmgVUCPwdxH9AboqAiQ==, figureFileBig=MZyMtP3B25Tbu8l9LnGzJA==, tableContent=null), ArticleFig(id=1175368753727549662, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图9, caption=
Cux/TiO2催化剂的O2-TPD曲线图, figureFileSmall=sEDXmgVUCPwdxH9AboqAiQ==, figureFileBig=MZyMtP3B25Tbu8l9LnGzJA==, tableContent=null), ArticleFig(id=1175368753790464223, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.10, caption=
In-situ DRIFTS spectra of N2O adsorbed by Cu5/TiO2 catalyst after pre-adsorption of O2, figureFileSmall=salT4OVcLHDMMOdDBTXCAw==, figureFileBig=y0ts1tXtSvlhKNToWIcbbQ==, tableContent=null), ArticleFig(id=1175368753849184480, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图10, caption=
Cu5/TiO2催化剂预吸附O2后再吸附N2O的原位红外光谱, figureFileSmall=salT4OVcLHDMMOdDBTXCAw==, figureFileBig=y0ts1tXtSvlhKNToWIcbbQ==, tableContent=null), ArticleFig(id=1175368753903710433, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Fig.11, caption=
In-situ DRIFTS spectra of O2 adsorbed by Cu5/TiO2 catalyst after pre-adsorption of N2O, figureFileSmall=w1A5viJxc9G8USqOv7HIgQ==, figureFileBig=cAKei+BCiIvJ7fQxf4T90Q==, tableContent=null), ArticleFig(id=1175368753954042082, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=图11, caption=
Cu5/TiO2催化剂预吸附N2O后再吸附O2的原位红外光谱, figureFileSmall=w1A5viJxc9G8USqOv7HIgQ==, figureFileBig=cAKei+BCiIvJ7fQxf4T90Q==, tableContent=null), ArticleFig(id=1175368754012762339, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Table 1, caption=
Calculation results of average grain size of CuO on Cux/TiO2 catalyst surface
, figureFileSmall=null, figureFileBig=null, tableContent=
| 催化剂类型 | 平均晶粒尺寸/nm |
| Cu1.25/TiO2 | — |
| Cu2.5/TiO2 | — |
| Cu5/TiO2 | — |
| Cu10/TiO2 | 53±5 |
| Cu20/TiO2 | 123±13 |
), ArticleFig(id=1175368754063093988, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=表1, caption=
Cux/TiO2催化剂表面CuO平均晶粒尺寸计算结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 催化剂类型 | 平均晶粒尺寸/nm |
| Cu1.25/TiO2 | — |
| Cu2.5/TiO2 | — |
| Cu5/TiO2 | — |
| Cu10/TiO2 | 53±5 |
| Cu20/TiO2 | 123±13 |
), ArticleFig(id=1175368754151174373, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=EN, label=Table 2, caption=
Physical adsorption calculation results of Cux/TiO2 catalyst
, figureFileSmall=null, figureFileBig=null, tableContent=
| 催化剂类型 | 比表面积/ (m2·g-1) | 平均孔容/ (cm3·g-1) | 平均孔径/ nm |
| Cu1.25/TiO2 | 102.33 | 0.30 | 23.37 |
| Cu2.5/TiO2 | 98.51 | 0.33 | 22.21 |
| Cu5/TiO2 | 100.23 | 0.29 | 22.13 |
| Cu10/TiO2 | 79.16 | 0.55 | 30.51 |
| Cu20/TiO2 | 60.22 | 0.52 | 36.82 |
), ArticleFig(id=1175368754209894630, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149773877443785547, language=CN, label=表2, caption=
Cux/TiO2催化剂物理吸附计算结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 催化剂类型 | 比表面积/ (m2·g-1) | 平均孔容/ (cm3·g-1) | 平均孔径/ nm |
| Cu1.25/TiO2 | 102.33 | 0.30 | 23.37 |
| Cu2.5/TiO2 | 98.51 | 0.33 | 22.21 |
| Cu5/TiO2 | 100.23 | 0.29 | 22.13 |
| Cu10/TiO2 | 79.16 | 0.55 | 30.51 |
| Cu20/TiO2 | 60.22 | 0.52 | 36.82 |
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