CAS OpenIR
Selective aerobic oxidative cleavage of lignin C-C bonds over novel hierarchical Ce-Cu/MFI nanosheets
Li, Lixia1; Kong, Juanhua1; Zhang, Huimin1; Liu, Sijie1; Zeng, Qiang1; Zhang, Yaqin2; Ma, Hao3; He, Hongyan2; Long, Jinxing1; Li, Xuehui1
2020-12-15
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume279Pages:16
AbstractThe catalytic depolymerization process for lignin to produce value added chemicals is often challenged by the limited mass transfer over heterogeneous catalysts, the complex aromatic biopolymer structures, and the high recalcitrance of C-C bonds. Herein, a series of hierarchical MFI nanosheets (MFI-ns) supported metal oxide catalysts have been designed and used for the selectively oxidative cleavage of organosolv lignin. As expected, 81.6 % conversion of lignin can be achieved over 15Ce-5Cu/MFI-ns with 294.0 mg g(-1) yield of volatile products, including 180.9 mg g(-1) of diethyl maleate. Quantum chemistry calculation coupled with static adsorption measurements shows that the superior catalytic activities of these catalysts are ascribed to the favorable mass transport of lignin to the active sites by the unique layer structure, and the hierarchical pore sizes distribution, as well as the electronic effect between Cu and Ce components. In addition, the catalytic mechanism for the cleavage of C-C bonds in beta-O-4 model probes has been studied via the controlled oxidative degree of model compounds and the isotope-labeling experiments. Therefore, this work provides a new insight into the efficient utilization of lignin via the rational design of catalysts.
KeywordLignin MFI nanosheets Oxidative cleavage Copper Ceria
DOI10.1016/j.apcatb.2020.119343
Language英语
WOS KeywordOXYGEN STORAGE CAPACITY ; MFI ZEOLITE NANOSHEETS ; PHOTOCATALYTIC ACTIVITY ; MOLECULAR-WEIGHT ; VISIBLE-LIGHT ; SOLID-STATE ; CATALYSTS ; DEPOLYMERIZATION ; CONVERSION ; NANOPARTICLES
Funding ProjectNatural Science Foundation of China[21736003] ; Natural Science Foundation of China[21922813and 21690083] ; Science and Technology Program of Guangzhou[201804020014] ; Guangdong Province, China[2017B090903003]
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
Funding OrganizationNatural Science Foundation of China ; Science and Technology Program of Guangzhou ; Guangdong Province, China
WOS IDWOS:000566454800003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41909
Collection中国科学院过程工程研究所
Corresponding AuthorHe, Hongyan; Long, Jinxing; Li, Xuehui
Affiliation1.South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
3.Guangdong Univ Petrochem Technol, Sch Chem, Maoming 525000, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Li, Lixia,Kong, Juanhua,Zhang, Huimin,et al. Selective aerobic oxidative cleavage of lignin C-C bonds over novel hierarchical Ce-Cu/MFI nanosheets[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020,279:16.
APA Li, Lixia.,Kong, Juanhua.,Zhang, Huimin.,Liu, Sijie.,Zeng, Qiang.,...&Li, Xuehui.(2020).Selective aerobic oxidative cleavage of lignin C-C bonds over novel hierarchical Ce-Cu/MFI nanosheets.APPLIED CATALYSIS B-ENVIRONMENTAL,279,16.
MLA Li, Lixia,et al."Selective aerobic oxidative cleavage of lignin C-C bonds over novel hierarchical Ce-Cu/MFI nanosheets".APPLIED CATALYSIS B-ENVIRONMENTAL 279(2020):16.
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