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Promoting Lignin Depolymerization and Restraining the Condensation via an Oxidation-Hydrogenation Strategy
Zhang, Chaofeng1; Li, Hongji1,2; Lu, Jianmin1; Zhang, Xiaochen1; MacArthur, Katherine E.3,4; Heggen, Marc3,4; Wang, Feng1
关键词Lignin Oxidation-hydrogenation Phenolic Monomer Nano2/ddq/nhpi Nimo Sulfide Lignin Fragments' Condensation
刊名ACS CATALYSIS
2017-05-01
DOI10.1021/acscatal.7b00148
7页:3419-3429
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]C-O BONDS ; MODEL COMPOUNDS ; CATALYZED DEPOLYMERIZATION ; IONIC LIQUID ; KRAFT LIGNIN ; ARYL ETHERS ; LIGNOCELLULOSE FRACTIONATION ; ALCOHOL OXIDATION ; VANADIUM CATALYST ; ORGANOSOLV LIGNIN
英文摘要For lignin valorization, simultaneously achieving the efficient cleavage of ether bonds and restraining the condensation of the formed fragments represents a challenge thus far. Herein, we report a two-step oxidation-hydrogenation strategy to achieve this goal. In the oxidation step, the O-2/NaNO2/DDQ/NHPI system selectively oxidizes C alpha H-OH to C-alpha=O within the beta-O-4 structure. In the subsequent hydrogenation step, the alpha-O-4 and the preoxidized beta-O-4 structures are further hydrogenated over a NiMo sulfide catalyst, leading to the cleavage of C-beta-OPh and C-alpha-OPh bonds. Besides the transformation of lignin model compounds, the yield of phenolic monomers from birch wood is up to 32% by using this two-step strategy. The preoxidation of C-alpha-OH to C-alpha=O not only weakens the C-beta-OPh ether bond but also avoids the condensation reactions caused by the presence of C-alpha(+) from dehydroxylation of C alpha H-OH. Furthermore, the NiMo sulfide prefers to catalyze the hydrogenative cleavage of the C-beta-OPh bond connecting with a C-alpha=O rather than catalyze the hydrogenation of C-alpha=O back to the original C alpha H-OH, which further ensures and utilizes the advantages of preoxidation.
语种英语
WOS记录号WOS:000401054300041
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152307
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Forschungszentrum Julich, Ernst Ruska Ctr Microscopy & Spect Electrons, D-52425 Julich, Germany
4.Forschungszentrum Julich, Peter Grunberg Inst, D-52425 Julich, Germany
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GB/T 7714
Zhang, Chaofeng,Li, Hongji,Lu, Jianmin,et al. Promoting Lignin Depolymerization and Restraining the Condensation via an Oxidation-Hydrogenation Strategy[J]. ACS CATALYSIS,2017,7:3419-3429.
APA Zhang, Chaofeng.,Li, Hongji.,Lu, Jianmin.,Zhang, Xiaochen.,MacArthur, Katherine E..,...&Wang, Feng.(2017).Promoting Lignin Depolymerization and Restraining the Condensation via an Oxidation-Hydrogenation Strategy.ACS CATALYSIS,7,3419-3429.
MLA Zhang, Chaofeng,et al."Promoting Lignin Depolymerization and Restraining the Condensation via an Oxidation-Hydrogenation Strategy".ACS CATALYSIS 7(2017):3419-3429.
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