Oxidative Catalytic Fractionation of Lignocellulose Enhanced by Copper-Manganese-Doped CeO2
文献类型：期刊论文
| 作者 | Zhu, Yuting1,2; Li, Ning1; Liu, Huifang1; Cai, Cheng3; Wang, Yehong1; Mu, Junju1; Wang, Feng1 |
| 刊名 | ACS CATALYSIS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 14期号:22页码:16872-16884 |
| 关键词 | lignin oxidation solid solution oxygen vacancy aromatic aldehyde |
| ISSN号 | 2155-5435 |
| DOI | 10.1021/acscatal.4c04159 |
| 通讯作者 | Wang, Feng(wangfeng@dicp.ac.cn) |
| 英文摘要 | Oxidative catalytic fractionation (OCF) represents an efficient approach to valorize lignocellulose for coproduction of monophenols and cellulose. To achieve an adequate monophenol yield, lignin oxidation, typically, requires high O2 pressure and an excess of Cu catalysts (the Cu dosage is approximately 3-5 mol equiv relative to the aromatic units in lignin). However, these conditions are relatively harsh for cellulose, resulting in severe decomposition to aliphatic acids. To address the trade-off between the monophenol yield and cellulose production, we develop an enhanced OCF using a CuMnCeO2 solid solution as the catalyst. Under relatively mild conditions (specifically, 0.1 MPa O2), 28.7 wt % monophenols were released from birch, using catalytic amounts of Cu (the Cu dosage was about 0.03 mol equiv relative to the aromatic units in lignin). Meanwhile, up to 83.9% of cellulose was collected as a solid pulp. The synergistic effect between doped metals (Cu and Mn) and oxygen vacancies was found to be crucial for enhanced lignin oxidation under mild conditions with minimized cellulose loss. The abundant surface oxygen vacancies facilitated oxygen activation by well-dispersed Cu and Mn species, while the strong interaction between these metals enhanced the catalyst's reducibility. Key intermediates such as beta-vinyl aryl ethers and byproduct glycolic acid were identified by model experiments, confirming that lignin oxidation primarily followed a 1,2-dioxetane homolysis mechanism. Overall, this enhanced OCF demonstrates the potential viability of lignin oxidation in practical biorefinery applications. |
| WOS关键词 | MOLECULAR-OXYGEN ; MODEL COMPOUNDS ; WET OXIDATION ; MIXED OXIDES ; LIGNIN ; CHEMICALS ; VANILLIN ; DEPOLYMERIZATION ; NANOSTRUCTURES ; COMBUSTION |
| 资助项目 | National Natural Science Foundation of China[2022YFA1504903] ; National Key R&D Program of China[22208338] ; National Key R&D Program of China[32130073] ; National Key R&D Program of China[22025206] ; National Key R&D Program of China[22272169] ; National Natural Science Foundation of China ; Liaoning Key Laboratory of Biomass Conversion for Energy and Material |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001348835800001 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; Liaoning Key Laboratory of Biomass Conversion for Energy and Material |
| 源URL | [http://ir.giec.ac.cn/handle/344007/43414]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Wang, Feng |
| 作者单位 | 1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.South China Agr Univ, Inst Biomass Engn, Guangzhou 510642, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Yuting,Li, Ning,Liu, Huifang,et al. Oxidative Catalytic Fractionation of Lignocellulose Enhanced by Copper-Manganese-Doped CeO2[J]. ACS CATALYSIS,2024,14(22):16872-16884. |
| APA | Zhu, Yuting.,Li, Ning.,Liu, Huifang.,Cai, Cheng.,Wang, Yehong.,...&Wang, Feng.(2024).Oxidative Catalytic Fractionation of Lignocellulose Enhanced by Copper-Manganese-Doped CeO2.ACS CATALYSIS,14(22),16872-16884. |
| MLA | Zhu, Yuting,et al."Oxidative Catalytic Fractionation of Lignocellulose Enhanced by Copper-Manganese-Doped CeO2".ACS CATALYSIS 14.22(2024):16872-16884. |
入库方式： OAI收割
来源：广州能源研究所
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。