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 |
DOI | 10.1016/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
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