Article(id=1319232626372755717, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319232566922695375, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20211011, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1637769600000, receivedDateStr=2021-11-25, revisedDate=1640188800000, revisedDateStr=2021-12-23, acceptedDate=null, acceptedDateStr=null, onlineDate=1792459168284, onlineDateStr=2026-10-20, pubDate=1658246400000, pubDateStr=2022-07-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792459168284, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792459168284, creator=13701087609, updateTime=1792459168284, updator=13701087609, issue=Issue{id=1319232566922695375, tenantId=1146029695717560320, journalId=1263187385517883426, year='2022', volume='50', issue='7', pageStart='1775', pageEnd='2066', issueExtLink='null', onlineDate='null', pubDate='1658246400000', pubDateStr='2022-07-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792459154109, creator='13701087609', updateTime=1792460038980, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319236278420357264, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319232566922695375, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319236278420357265, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319232566922695375, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1945, endPage=1954, ext={EN=ArticleExt(id=1319232627870122246, articleId=1319232626372755717, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Performance of Passive NOx Adsorbent Pd/ZSM-5, columnId=1263922769897599102, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Articles, runingTitle=null, highlight=null, articleAbstract=

The existing NOx post-treatment techniques of diesel vehicle exhaust have a poor performance during the cold start, passive NOx adsorbent (PNA) is thus proposed. In this paper, Pd/ZSM-5 PNA was obtained by loading 1% Pd onto ZSM-5 zeolite in Si/Al ratio of 11.5 via incipient wetness impregnation and ion exchange, respectively. The effect of reaction atmosphere (with or without O2 and H2O) on the adsorbed-released NOx performance of PNA with two Pd loading methods was investigated. The mechanism of the factors affecting the structure properties, Pd species state and acid properties of Pd/ZSM-5 was analyzed by X-ray diffraction, N2 adsorption-desorption isotherm, transmission tlectron microscopy, in-situ diffuse reflectance infrared Fourier transform spectroscopy and NH3-temperature programmed desorption, respectively. The O2 effect in the pretreatment atmosphere was further evaluated. The results show that there are more NO active adsorption sites with O2 in pretreatment and reaction atmosphere during incipient wetness impregnation, thus improving the NO adsorption capacity of Pd/ZSM-5. In addition, O2 promotes the release of NOx at a lower temperature (~200 ℃), and an incipient wetness impregnation method reduces the release temperature to 430 ℃, which is conducive to the material regeneration. H2O inhibits NO adsorption, but promotes NOx release capacity at a higher temperature. This work can provide a reference for the design of high-performance Pd/zeolites. High adsorption-release capacity is the important prerequisite for the development of high-performance PNA.

, authors=Rouxing PAN1, Qingjun YU1, 2, Honghong YI1, 2, Fengyu GAO1, 2, Xianzheng MENG1, Yuanyuan LIU1, Xiaolong TANG1, 2, authorsList=Rouxing PAN, Qingjun YU, Honghong YI, Fengyu GAO, Xianzheng MENG, Yuanyuan LIU, Xiaolong TANG, authorCompany=null, correspAuthors=Xiaolong TANG, authorNote=

PAN Rouxing (1996-), female, Master candidate. E-mail:

, correspAuthorsNote=
TANG Xiaolong (1977-), male, Ph.D., Professor. E-mail:
, 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, fund=null), CN=ArticleExt(id=1319232628214055175, articleId=1319232626372755717, tenantId=1146029695717560320, journalId=1263187385517883426, language=CN, title=被动式NOx吸附剂Pd/ZSM-5的性能影响因素, columnId=1263922770220560512, journalTitle=硅酸盐学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=

柴油车尾气NOx后处理技术对冷启动阶段NOx净化效果较差,被动NOx吸附剂(PNA)应运而生。分别采用等体积浸渍法和离子交换法将1% Pd负载于m(Si)/m(Al)为11.5的ZSM-5分子筛,获得Pd/ZSM-5 PNA材料。考察反应气氛(有无O2和H2O)对2种不同Pd负载方式PNA吸附-释放NOx性能的影响。采用X射线衍射、N2吸附-脱附曲线测定、透射电子显微镜、原位漫反射Fourier变换红外光谱和NH3程序升温脱附手段,从Pd/ZSM-5结构性质,Pd物种形态和酸性质分析以上因素的影响作用机制,并进一步评价预处理气氛中O2作用。结果表明:反应气和预处理气氛存在O2及等体积浸渍法中存在更多NO活性吸附位点从而提高Pd/ZSM-5的NO吸附能力。此外,O2促进NOx低温(~200 ℃)释放,等体积浸渍法使释放温度降至430 ℃,有利于材料再生。H2O抑制了NO吸附,但可提高NOx高温释放能力。为设计高性能Pd/分子筛提供建议,具备高吸附-释放能力是开发高性能PNA的重要前提。

, authors=潘柔杏1, 于庆君1, 2, 易红宏1, 2, 高凤雨1, 2, 孟宪政1, 刘媛媛1, 唐晓龙1, 2, authorsList=潘柔杏, 于庆君, 易红宏, 高凤雨, 孟宪政, 刘媛媛, 唐晓龙, authorCompany=null, correspAuthors=唐晓龙, authorNote=

潘柔杏(1996—),女,硕士研究生。

, correspAuthorsNote=
唐晓龙(1977—),男,博士,教授。
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PAN Rouxing (1996-), female, Master candidate. E-mail:

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潘柔杏(1996—),女,硕士研究生。

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潘柔杏(1996—),女,硕士研究生。

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被动式NOx吸附剂Pd/ZSM-5的性能影响因素
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潘柔杏 1 , 于庆君 1, 2 , 易红宏 1, 2 , 高凤雨 1, 2 , 孟宪政 1 , 刘媛媛 1 , 唐晓龙 1, 2
硅酸盐学报 | 研究论文 2022,50(7): 1945-1954
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硅酸盐学报 |研究论文 2022 , 50 (7) : 1945 -1954
被动式NOx吸附剂Pd/ZSM-5的性能影响因素
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潘柔杏1 , 于庆君1, 2, 易红宏1, 2, 高凤雨1, 2, 孟宪政1, 刘媛媛1, 唐晓龙1, 2
作者信息
  • 1.北京科技大学能源与环境工程学院,北京 100083
  • 2.工业典型污染物资源化处理北京市重点研究室,北京 100083
通讯作者:
唐晓龙(1977—),男,博士,教授。
作者简介:

潘柔杏(1996—),女,硕士研究生。

Performance of Passive NOx Adsorbent Pd/ZSM-5
Rouxing PAN1 , Qingjun YU1, 2, Honghong YI1, 2, Fengyu GAO1, 2, Xianzheng MENG1, Yuanyuan LIU1, Xiaolong TANG1, 2
Affiliations
  • 1.Company School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 2.Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China
  • Corresponding Author:
    TANG Xiaolong (1977-), male, Ph.D., Professor. E-mail:

    PAN Rouxing (1996-), female, Master candidate. E-mail:

出版时间: 2022-07-20 doi: 10.14062/j.issn.0454-5648.20211011
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柴油车尾气NOx后处理技术对冷启动阶段NOx净化效果较差,被动NOx吸附剂(PNA)应运而生。分别采用等体积浸渍法和离子交换法将1% Pd负载于m(Si)/m(Al)为11.5的ZSM-5分子筛,获得Pd/ZSM-5 PNA材料。考察反应气氛(有无O2和H2O)对2种不同Pd负载方式PNA吸附-释放NOx性能的影响。采用X射线衍射、N2吸附-脱附曲线测定、透射电子显微镜、原位漫反射Fourier变换红外光谱和NH3程序升温脱附手段,从Pd/ZSM-5结构性质,Pd物种形态和酸性质分析以上因素的影响作用机制,并进一步评价预处理气氛中O2作用。结果表明:反应气和预处理气氛存在O2及等体积浸渍法中存在更多NO活性吸附位点从而提高Pd/ZSM-5的NO吸附能力。此外,O2促进NOx低温(~200 ℃)释放,等体积浸渍法使释放温度降至430 ℃,有利于材料再生。H2O抑制了NO吸附,但可提高NOx高温释放能力。为设计高性能Pd/分子筛提供建议,具备高吸附-释放能力是开发高性能PNA的重要前提。

被动式  /  氮氧化物  /  吸附剂  /  分子筛  /  吸附-释放

The existing NOx post-treatment techniques of diesel vehicle exhaust have a poor performance during the cold start, passive NOx adsorbent (PNA) is thus proposed. In this paper, Pd/ZSM-5 PNA was obtained by loading 1% Pd onto ZSM-5 zeolite in Si/Al ratio of 11.5 via incipient wetness impregnation and ion exchange, respectively. The effect of reaction atmosphere (with or without O2 and H2O) on the adsorbed-released NOx performance of PNA with two Pd loading methods was investigated. The mechanism of the factors affecting the structure properties, Pd species state and acid properties of Pd/ZSM-5 was analyzed by X-ray diffraction, N2 adsorption-desorption isotherm, transmission tlectron microscopy, in-situ diffuse reflectance infrared Fourier transform spectroscopy and NH3-temperature programmed desorption, respectively. The O2 effect in the pretreatment atmosphere was further evaluated. The results show that there are more NO active adsorption sites with O2 in pretreatment and reaction atmosphere during incipient wetness impregnation, thus improving the NO adsorption capacity of Pd/ZSM-5. In addition, O2 promotes the release of NOx at a lower temperature (~200 ℃), and an incipient wetness impregnation method reduces the release temperature to 430 ℃, which is conducive to the material regeneration. H2O inhibits NO adsorption, but promotes NOx release capacity at a higher temperature. This work can provide a reference for the design of high-performance Pd/zeolites. High adsorption-release capacity is the important prerequisite for the development of high-performance PNA.

passive  /  nitrogen oxide  /  adsorbent  /  molecular sieve  /  adsorption-release
潘柔杏, 于庆君, 易红宏, 高凤雨, 孟宪政, 刘媛媛, 唐晓龙. 被动式NOx吸附剂Pd/ZSM-5的性能影响因素. 硅酸盐学报, 2022 , 50 (7) : 1945 -1954 . DOI: 10.14062/j.issn.0454-5648.20211011
Rouxing PAN, Qingjun YU, Honghong YI, Fengyu GAO, Xianzheng MENG, Yuanyuan LIU, Xiaolong TANG. Performance of Passive NOx Adsorbent Pd/ZSM-5[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (7) : 1945 -1954 . DOI: 10.14062/j.issn.0454-5648.20211011
  • 移动源污染排放控制技术国家工程实验室开放基金(NELMS2020A07)
  • 中央高校基本科研业务费项目(FRF-AT-20-12)
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2022年第50卷第7期
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doi: 10.14062/j.issn.0454-5648.20211011
  • 接收时间:2021-11-25
  • 首发时间:2026-10-20
  • 出版时间:2022-07-20
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  • 收稿日期:2021-11-25
  • 修回日期:2021-12-23
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移动源污染排放控制技术国家工程实验室开放基金(NELMS2020A07)
中央高校基本科研业务费项目(FRF-AT-20-12)
作者信息
    1.北京科技大学能源与环境工程学院,北京 100083
    2.工业典型污染物资源化处理北京市重点研究室,北京 100083

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唐晓龙(1977—),男,博士,教授。
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2种不同金属材料的力学参数
科
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属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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