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Article: Complete elimination of indoor formaldehyde over supported Pt catalysts with extremely low Pt content at ambient temperature

TitleComplete elimination of indoor formaldehyde over supported Pt catalysts with extremely low Pt content at ambient temperature
Authors
KeywordsAmbient temperature
Catalytic oxidation
HCHO elimination
Metallic Pt
Pt nanoparticles
Issue Date2011
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jcat
Citation
Journal Of Catalysis, 2011, v. 280 n. 1, p. 60-67 How to Cite?
AbstractA series of highly active supported Pt catalysts, developed by sodium borohydride reduction under mild preparation conditions, were used to eliminate indoor formaldehyde (HCHO) at ambient temperature. The influences of oxidation state, support and size of Pt particles, and the operating parameters were investigated. The reduced Pt nanoparticles with different supports are highly active for catalytic oxidation of HCHO. For example, nearly 100% HCHO conversion was obtained on the reduced Pt/TiO 2 catalysts (denoted as Pt-TiO 2) even with 0.1% Pt loading while it was less than 25% on the oxidized ones. Negatively charged metallic Pt nanoparticles, which probably facilitate the electron transfer and formation of active oxygen, provide the active sites for HCHO oxidation. The turnover frequencies (TOFs) of HCHO oxidation on Pt nanoparticles with different supports are not sensitive to the reducibility of support but somewhat affected by the Pt particle sizes. A maximum TOF of 2.87 s -1 was obtained on the 1% Pt-MgO with Pt particle size of about 3 nm. The 0.1% Pt-TiO 2 catalyst remained highly active and stable in humid air with a wide gas hourly space velocity range between 40,000 and 240,000 h -1 and initial HCHO concentration range between 5 and 30 ppm. © 2011 Elsevier Inc. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/134427
ISSN
2015 Impact Factor: 7.354
2015 SCImago Journal Rankings: 2.807
ISI Accession Number ID
Funding AgencyGrant Number
CRCG of the University of Hong Kong200907176159
Funding Information:

The authors gratefully acknowledge the financial supports from the CRCG of the University of Hong Kong (Grant No. 200907176159).

References

 

DC FieldValueLanguage
dc.contributor.authorHuang, Hen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2011-06-17T09:20:15Z-
dc.date.available2011-06-17T09:20:15Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Catalysis, 2011, v. 280 n. 1, p. 60-67en_HK
dc.identifier.issn0021-9517en_HK
dc.identifier.urihttp://hdl.handle.net/10722/134427-
dc.description.abstractA series of highly active supported Pt catalysts, developed by sodium borohydride reduction under mild preparation conditions, were used to eliminate indoor formaldehyde (HCHO) at ambient temperature. The influences of oxidation state, support and size of Pt particles, and the operating parameters were investigated. The reduced Pt nanoparticles with different supports are highly active for catalytic oxidation of HCHO. For example, nearly 100% HCHO conversion was obtained on the reduced Pt/TiO 2 catalysts (denoted as Pt-TiO 2) even with 0.1% Pt loading while it was less than 25% on the oxidized ones. Negatively charged metallic Pt nanoparticles, which probably facilitate the electron transfer and formation of active oxygen, provide the active sites for HCHO oxidation. The turnover frequencies (TOFs) of HCHO oxidation on Pt nanoparticles with different supports are not sensitive to the reducibility of support but somewhat affected by the Pt particle sizes. A maximum TOF of 2.87 s -1 was obtained on the 1% Pt-MgO with Pt particle size of about 3 nm. The 0.1% Pt-TiO 2 catalyst remained highly active and stable in humid air with a wide gas hourly space velocity range between 40,000 and 240,000 h -1 and initial HCHO concentration range between 5 and 30 ppm. © 2011 Elsevier Inc. All rights reserved.en_HK
dc.languageengen_US
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jcaten_HK
dc.relation.ispartofJournal of Catalysisen_HK
dc.subjectAmbient temperatureen_HK
dc.subjectCatalytic oxidationen_HK
dc.subjectHCHO eliminationen_HK
dc.subjectMetallic Pten_HK
dc.subjectPt nanoparticlesen_HK
dc.titleComplete elimination of indoor formaldehyde over supported Pt catalysts with extremely low Pt content at ambient temperatureen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-9517&volume=280&issue=1&spage=60&epage=67&date=2011&atitle=Complete+elimination+of+indoor+formaldehyde+over+supported+Pt+catalysts+with+extremely+low+Pt+content+at+ambient+temperature-
dc.identifier.emailLeung, DYC:ycleung@hku.hken_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jcat.2011.03.003en_HK
dc.identifier.scopuseid_2-s2.0-79955471461en_HK
dc.identifier.hkuros185854en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79955471461&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume280en_HK
dc.identifier.issue1en_HK
dc.identifier.spage60en_HK
dc.identifier.epage67en_HK
dc.identifier.eissn1090-2694-
dc.identifier.isiWOS:000291523400007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHuang, H=24080074500en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK
dc.identifier.citeulike9177266-

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