中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Selective aerobic oxidative cleavage of lignin C-C bonds over novel hierarchical Ce-Cu/MFI nanosheets

文献类型:期刊论文

作者Li, Lixia3; Kong, Juanhua3; Zhang, Huimin3; Liu, Sijie3; Zeng, Qiang3; Zhang, Yaqin2; Ma, Hao1; He, Hongyan2; Long, Jinxing3; Li, Xuehui3
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2020-12-15
卷号279页码:16
ISSN号0926-3373
关键词Lignin MFI nanosheets Oxidative cleavage Copper Ceria
DOI10.1016/j.apcatb.2020.119343
英文摘要The 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.
WOS关键词OXYGEN STORAGE CAPACITY ; MFI ZEOLITE NANOSHEETS ; PHOTOCATALYTIC ACTIVITY ; MOLECULAR-WEIGHT ; VISIBLE-LIGHT ; SOLID-STATE ; CATALYSTS ; DEPOLYMERIZATION ; CONVERSION ; NANOPARTICLES
资助项目Natural Science Foundation of China[21736003] ; Natural Science Foundation of China[21922813and 21690083] ; Science and Technology Program of Guangzhou[201804020014] ; Guangdong Province, China[2017B090903003]
WOS研究方向Chemistry ; Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000566454800003
资助机构Natural Science Foundation of China ; Science and Technology Program of Guangzhou ; Guangdong Province, China
源URL[http://ir.ipe.ac.cn/handle/122111/41908]  
专题中国科学院过程工程研究所
通讯作者He, Hongyan; Long, Jinxing; Li, Xuehui
作者单位1.Guangdong Univ Petrochem Technol, Sch Chem, Maoming 525000, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
3.South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式
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.

入库方式: OAI收割

来源:过程工程研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。