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Studies on CuCe0.75Zr0.25Ox preparation using bacterial cellulose and its application in toluene complete oxidation
Yan,Ningna1; Hao,Qinglan1; Zhao,Chenchen1; Yang,Deyu1; Dou,Baojuan1; Hui,K. S.2; Hui,Kwun Nam3
2019-04
Source PublicationChemistrySelect
ISSN2365-6549
Volume4Issue:14Pages:4355-4363
Abstract

A series of CuCe0.75Zr0.25Ox catalysts (CCZ) were synthesized based on the environmental-friendly bacterial cellulose (BC) by using the sol-gel method. The corresponding synthesis mechanism, physicochemical properties of the catalysts and catalytic performances for toluene oxidation were comprehensively studied. In the presence of BC without sugar, the CCZ−A synthesized by ethanol-gel exhibits better catalytic activity than the CCZ−W synthesized by water-gel, which may be due to the different roles of BC in different solvents. However, it is worth noting that the graft copolymerization between BC and active metal (Ce4+, Cu2+) is the same process in both water-gel and ethanol-gel. The activity of CCZ-SW synthesized by water-gel using BC with sugar is obviously higher than that of CCZ−W and CCZ−A. The temperature of complete degradation of toluene over CCZ-SW is 205 °C, which is 35 °C lower than that of CCZ−W. The results from BET, Raman and H2-TPR indicate that the larger the specific surface area, the more oxygen vacancies and better low-temperature reducibility, that are mainly responsible for the excellent activity of CCZ-SW. The existence of sugar in BC could hinder the agglomeration of active metal particles during the calcination process. Combined with the results of in situ DRIFT, the adsorbed toluene on the catalyst surface is oxidized into alkoxide, aldehydic and carboxylic acid species as intermediates before the complete oxidation into CO2 and H2O.

KeywordBacterial Cellulose Graft Copolymerization Reaction Mechanism Sol-gel Toluene Oxidation
DOI10.1002/slct.201900727
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000467344100051
PublisherWILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY
Scopus ID2-s2.0-85064476684
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorDou,Baojuan; Hui,K. S.
Affiliation1.Tianjin University of Science & Technology,Tianjin,300457,China
2.Engineering,Faculty of Science,University of East Anglia,Norwich Research Park,NR4 7TJ,United Kingdom
3.Institute of Applied Physics and Materials Engineering,University of Macau,Avenida da Universidade,Taipa,China
Recommended Citation
GB/T 7714
Yan,Ningna,Hao,Qinglan,Zhao,Chenchen,et al. Studies on CuCe0.75Zr0.25Ox preparation using bacterial cellulose and its application in toluene complete oxidation[J]. ChemistrySelect,2019,4(14):4355-4363.
APA Yan,Ningna,Hao,Qinglan,Zhao,Chenchen,Yang,Deyu,Dou,Baojuan,Hui,K. S.,&Hui,Kwun Nam.(2019).Studies on CuCe0.75Zr0.25Ox preparation using bacterial cellulose and its application in toluene complete oxidation.ChemistrySelect,4(14),4355-4363.
MLA Yan,Ningna,et al."Studies on CuCe0.75Zr0.25Ox preparation using bacterial cellulose and its application in toluene complete oxidation".ChemistrySelect 4.14(2019):4355-4363.
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