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Article: Scalable synthesis of ordered mesoporous binary metal oxide: CexZr1-xO2 as thermally stable catalyst for enhanced CO oxidation

TitleScalable synthesis of ordered mesoporous binary metal oxide: CexZr1-xO2 as thermally stable catalyst for enhanced CO oxidation
Authors
KeywordsColloidal solution combustion synthesis
Mesoporous binary metal oxide
Diesel oxidation catalyst
CO oxidation
Diesel particulate filter
Issue Date2021
PublisherElsevier Ltd. The Journal's web site is located at http://www.materialstoday.com/materials-chemistry/journals/materials-today-communications
Citation
Materials Today Communications, 2021, v. 26, p. article no. 101811 How to Cite?
AbstractThe scale-up synthesis of mesoporous binary metal oxides with uniform porosity for practical application is still challenging. Here we report an ordered mesoporous CexZr1-xO2 catalyst synthesized by a scalable colloidal solution combustion method, and tested for CO oxidation. The mesoporous CexZr1-xO2 catalyst is durable and demonstrates superior CO oxidation activity with a full conversion at ∼ 400 °C due to its high surface area of about 141 m2/g and pore volumes of 0.55 mL/g. The CexZr1-xO2 catalyst is also active and thermally stable up to 800 °C. Its structure is robust with uniform Zr distribution and nano-cavities even after accelerated ageing. We have also realized the practical feasibility by scale-up synthesis of 600 g mesoporous CexZr1-xO2 catalyst. It is then effectively applied as diesel oxidation catalysts in a Diesel Particulate Filter (DPF) in simulated vehicle gas environment. Our DPF prototype allows nearly a full CO to CO2 conversion below 100 °C. The synthesis is simple and scalable, allowing full control of composition and porosity to effectively design binary oxides for enhanced catalytic applications.
Persistent Identifierhttp://hdl.handle.net/10722/300878

 

DC FieldValueLanguage
dc.contributor.authorZHANG, Y-
dc.contributor.authorTsui, CKJ-
dc.contributor.authorLi, CYV-
dc.contributor.authorChan, KY-
dc.contributor.authorLeung, DYC-
dc.contributor.authorSit, SM-
dc.contributor.authorHo, CK-
dc.contributor.authorLeung, KM-
dc.contributor.authorLiao, C-
dc.date.accessioned2021-07-06T03:11:27Z-
dc.date.available2021-07-06T03:11:27Z-
dc.date.issued2021-
dc.identifier.citationMaterials Today Communications, 2021, v. 26, p. article no. 101811-
dc.identifier.urihttp://hdl.handle.net/10722/300878-
dc.description.abstractThe scale-up synthesis of mesoporous binary metal oxides with uniform porosity for practical application is still challenging. Here we report an ordered mesoporous CexZr1-xO2 catalyst synthesized by a scalable colloidal solution combustion method, and tested for CO oxidation. The mesoporous CexZr1-xO2 catalyst is durable and demonstrates superior CO oxidation activity with a full conversion at ∼ 400 °C due to its high surface area of about 141 m2/g and pore volumes of 0.55 mL/g. The CexZr1-xO2 catalyst is also active and thermally stable up to 800 °C. Its structure is robust with uniform Zr distribution and nano-cavities even after accelerated ageing. We have also realized the practical feasibility by scale-up synthesis of 600 g mesoporous CexZr1-xO2 catalyst. It is then effectively applied as diesel oxidation catalysts in a Diesel Particulate Filter (DPF) in simulated vehicle gas environment. Our DPF prototype allows nearly a full CO to CO2 conversion below 100 °C. The synthesis is simple and scalable, allowing full control of composition and porosity to effectively design binary oxides for enhanced catalytic applications.-
dc.languageeng-
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.materialstoday.com/materials-chemistry/journals/materials-today-communications-
dc.relation.ispartofMaterials Today Communications-
dc.subjectColloidal solution combustion synthesis-
dc.subjectMesoporous binary metal oxide-
dc.subjectDiesel oxidation catalyst-
dc.subjectCO oxidation-
dc.subjectDiesel particulate filter-
dc.titleScalable synthesis of ordered mesoporous binary metal oxide: CexZr1-xO2 as thermally stable catalyst for enhanced CO oxidation-
dc.typeArticle-
dc.identifier.emailLi, CYV: cyvli@hku.hk-
dc.identifier.emailChan, KY: hrsccky@hku.hk-
dc.identifier.emailLeung, DYC: ycleung@hku.hk-
dc.identifier.emailHo, CK: uzijacky@hku.hk-
dc.identifier.emailLeung, KM: thsleung@hku.hk-
dc.identifier.emailLiao, C: liaocz@hku.hk-
dc.identifier.authorityLi, CYV=rp02122-
dc.identifier.authorityChan, KY=rp00662-
dc.identifier.authorityLeung, DYC=rp00149-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.mtcomm.2020.101811-
dc.identifier.scopuseid_2-s2.0-85097084441-
dc.identifier.hkuros323078-
dc.identifier.volume26-
dc.identifier.spagearticle no. 101811-
dc.identifier.epagearticle no. 101811-
dc.identifier.eissn2352-4928-
dc.publisher.placeUnited Kingdom-

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