Phosphorus modification to improve the hydrothermal stability of a Cu-SSZ-13 catalyst for selective reduction of NOx with NH 3

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Zhao, Huawang
dc.contributor.author Zhao, Yingnan
dc.contributor.author Liu, Mengke
dc.contributor.author Li, Xianghui
dc.contributor.author Ma, Yuhan
dc.contributor.author Yong, Xin
dc.contributor.author Chen, Hong
dc.contributor.author Li, Yongdan
dc.date.accessioned 2019-06-20T13:12:29Z
dc.date.available 2019-06-20T13:12:29Z
dc.date.issued 2019-09-05
dc.identifier.citation Zhao , H , Zhao , Y , Liu , M , Li , X , Ma , Y , Yong , X , Chen , H & Li , Y 2019 , ' Phosphorus modification to improve the hydrothermal stability of a Cu-SSZ-13 catalyst for selective reduction of NOx with NH 3 ' Applied Catalysis B: Environmental , vol. 252 , pp. 230-239 . https://doi.org/10.1016/j.apcatb.2019.04.037 en
dc.identifier.issn 0926-3373
dc.identifier.issn 1873-3883
dc.identifier.other PURE UUID: 154c4c08-641f-4f2b-854b-8a689af933ae
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/phosphorus-modification-to-improve-the-hydrothermal-stability-of-a-cussz13-catalyst-for-selective-reduction-of-nox-with-nh-3(154c4c08-641f-4f2b-854b-8a689af933ae).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85064855191&partnerID=8YFLogxK
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/38798
dc.description.abstract Phosphorus is introduced to modify the Cu-SSZ-13 catalyst via incipient wetness impregnation, with P/Cu-SSZ-13 = 1 and 2 wt.%, and Si/Al = 4, for selective catalytic reduction of NOx with NH 3 . N 2 physisorption and XRD results show the incorporation of phosphorus as phosphate acid enhanced the hydrothermal stability of Cu-SSZ-13 significantly, during hydrothermal aging in 10 vol.% H 2 O/air at 750 °C for 16 h. NMR and Raman results suggest that phosphate ions migrate and coordinate with the framework-bonded Al species, forming a framework silicoaluminophosphate interface, thus impeding further dealumination and structure collapse. Before the hydrothermal aging, the isolated Cu2+ ions partly interact with the phosphate ions, forming Cu-phosphate species and reducing the SCR performance. Nevertheless, the appropriate content of phosphate ions can prevent the structure collapse caused by the hydrothermal aging, remaining the isolated Cu 2+ ions as well as excellent SCR performance. en
dc.format.extent 10
dc.format.extent 230-239
dc.language.iso en en
dc.publisher Elsevier BV
dc.relation.ispartofseries Applied Catalysis B: Environmental en
dc.relation.ispartofseries Volume 252 en
dc.rights embargoedAccess en
dc.subject.other Environmental Science(all) en
dc.subject.other Process Chemistry and Technology en
dc.subject.other Catalysis en
dc.subject.other 215 Chemical engineering en
dc.title Phosphorus modification to improve the hydrothermal stability of a Cu-SSZ-13 catalyst for selective reduction of NOx with NH 3 en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Tianjin University
dc.contributor.department Department of Chemical and Metallurgical Engineering
dc.contributor.department School of Chemical Engineering
dc.contributor.department Department of Chemical and Metallurgical Engineering en
dc.subject.keyword Cu-SSZ-13
dc.subject.keyword Emission control
dc.subject.keyword Hydrothermal aging
dc.subject.keyword NH -SCR
dc.subject.keyword Phosphorus modification
dc.subject.keyword CU-SAPO-34
dc.subject.keyword CRACKING
dc.subject.keyword SI/AL RATIO
dc.subject.keyword PERFORMANCE
dc.subject.keyword NH3-SCR
dc.subject.keyword CU SITES
dc.subject.keyword NMR
dc.subject.keyword PROMOTION
dc.subject.keyword CU/SSZ-13
dc.subject.keyword ZEOLITE
dc.subject.keyword Environmental Science(all)
dc.subject.keyword Process Chemistry and Technology
dc.subject.keyword Catalysis
dc.subject.keyword 215 Chemical engineering
dc.identifier.urn URN:NBN:fi:aalto-201906203864
dc.identifier.doi 10.1016/j.apcatb.2019.04.037
dc.date.embargo info:eu-repo/date/embargoEnd/2021-04-19


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