Selective C-C bond cleavage of oxidized lignin in an aqueous phase under mild conditions
文献类型：期刊论文
| 作者 | Hu, Yuzhen1,2,4; Cui, Yanbin4; Zhao, Shuoxiao4; Zhao, Xuelai4; Hu, Xiaohong3; Song, Zhenlong4; Fan, Wei1; Zhang, Qi3 |
| 刊名 | GREEN CHEMISTRY
 |
| 出版日期 | 2023-07-03 |
| 卷号 | 25期号:13页码:5150-5159 |
| ISSN号 | 1463-9262 |
| DOI | 10.1039/d3gc00496a |
| 通讯作者 | Fan, Wei(wfan@ecs.umass.edu) ; Zhang, Qi(zhangqiseu@seu.edu.cn) |
| 英文摘要 | Selective cleavage of C-C bonds in the lignin structure is crucial for the depolymerization of lignin and producing value-added chemicals. In this study, we reported that Pd/CeO2 catalysts can selectively catalyze the C-alpha-C-beta bond cleavage of oxidized lignin model components and authentic lignin in an aqueous phase under mild conditions (50 degrees C, ambient pressure). A variety of beta-O-4 and beta-1 ketones with representative C-alpha-C-beta bonds were successfully cleaved yielding aromatic acids and phenols in 76.8-94.9% yields. Their unique catalytic properties are derived from the electron transfer between Pd and CeO2 support which facilitates active Pd2+ sites and reactive oxygen species formation. A mechanistic study elucidates that base-mediated C-H bond activation via enolization and in situ reactive oxygen species (O-2(-)) formation are the key steps for the selective C-alpha-C-beta cleavage. Furthermore, the applicability of the system for the bond cleavage in an authentic lignin sample was demonstrated. Nearly 54.2 wt% of oxidized bamboo lignin was converted, generating aromatic monomer yields up to 35.9 wt%, with a high selectivity for aromatic aldehydes. |
| WOS关键词 | CATALYTIC-OXIDATION ; ALCOHOL OXIDATION ; COPPER ; DEPOLYMERIZATION ; CHEMICALS ; OXYGEN ; PYROLYSIS ; KETONES ; MODELS ; ACIDS |
| 资助项目 | National Key Research and Development Program of China[2022YFE0207200] ; National Natural Science Foundation of China[51876209] ; National Natural Science Foundation of China[52236010] ; National Natural Science Foundation of China[52206288] ; Fundamental Research Funds for the Central Universities[2242022R10058] ; China Postdoctoral Science Foundation[2022M713166] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001006260100001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/39037]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Fan, Wei; Zhang, Qi |
| 作者单位 | 1.Univ Massachusetts Amherst, Chem Engn Dept, Amherst, MA 01003 USA 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Southeast Univ, Sch Energy & Environm, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing 210096, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Prov Key Lab New & Renewable Energy Res, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Yuzhen,Cui, Yanbin,Zhao, Shuoxiao,et al. Selective C-C bond cleavage of oxidized lignin in an aqueous phase under mild conditions[J]. GREEN CHEMISTRY,2023,25(13):5150-5159. |
| APA | Hu, Yuzhen.,Cui, Yanbin.,Zhao, Shuoxiao.,Zhao, Xuelai.,Hu, Xiaohong.,...&Zhang, Qi.(2023).Selective C-C bond cleavage of oxidized lignin in an aqueous phase under mild conditions.GREEN CHEMISTRY,25(13),5150-5159. |
| MLA | Hu, Yuzhen,et al."Selective C-C bond cleavage of oxidized lignin in an aqueous phase under mild conditions".GREEN CHEMISTRY 25.13(2023):5150-5159. |
入库方式： OAI收割
来源：广州能源研究所
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