DICP OpenIR
Tungsten Carbide: A Remarkably Efficient Catalyst for the Selective Cleavage of Lignin C-O Bonds
Guo, Haiwei1,2; Zhang, Bo1; Li, Changzhi1; Peng, Chang1,2; Dai, Tao1,2; Xie, Haibo3; Wang, Aiqin1; Zhang, Tao1
KeywordAromatics Biomass Lignin Methanol Tungsten
Source PublicationCHEMSUSCHEM
2016-11-23
ISSN1864-5631
DOI10.1002/cssc.201600901
Volume9Issue:22Pages:3220-3229
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordMETAL-CATALYSTS ; MOLYBDENUM CARBIDE ; ETHYLENE-GLYCOL ; PHENOLIC-COMPOUNDS ; ORGANOSOLV LIGNIN ; HYDROGEN-TRANSFER ; MODEL COMPOUNDS ; AQUEOUS-PHASE ; WOODY BIOMASS ; SOFT OXIDANT
AbstractA remarkably effective method for the chemoselective cleavage of the C-O bonds of typical beta-O-4 model compounds and the deconstruction of lignin feedstock was developed by using tungsten carbide as the catalyst. High yields of C-O cleavage products (up to 96.8%) from model compounds and liquid oils (up to 70.7%) from lignin feedstock were obtained under low hydrogen pressure (0.69 MPa) in methanol. The conversion efficiency was determined to a large extent by solvent effects and was also affected by both the electronic and steric effects of the lignin model compounds. In situ W2C/activated carbon (AC)-catalyzed hydrogen transfer from methanol to the substrate was proposed to be responsible for the high performance in methanol solvent. The conversion of 2-(2-methoxyphenoxy)-1-phenylethanol showed that the catalyst could be reused five times without a significant loss in activity for C-chemoselective-O bond cleavage, whereas the selectivity to value-added styrene increased markedly owing to partial oxidation of the W2C phase according to X-ray diffraction, Raman spectroscopy, and transmission electron microscopy characterization. 2D-HSQCNMR spectroscopy analysis showed that W2C/AC exhibited high activity not only for beta-O-4 cleavage but also for the deconstruction of more resistant alpha-O-4 and beta-beta linkages, so that a high yield of liquid oil was obtained from lignin. Corn stalk lignin was more liable to be depolymerized than birch lignin owing to its loosened structure (scanning electron microscopy results), larger surface area (BET results), and lower molecular weight (gel-permeation chromatography results), whereas its liquid oil composition was more complicated than that of birch wood lignin in that the former lignin contained more p-hydroxyphenyl units and the former contained noncanonical units.
Language英语
WOS IDWOS:000394571300013
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/169609
Collection中国科学院大连化学物理研究所
Corresponding AuthorLi, Changzhi; Zhang, Tao
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Guizhou Univ, Coll Mat & Met, Dept Polymer Mat & Engn, Guiyang 550025, Peoples R China
Recommended Citation
GB/T 7714
Guo, Haiwei,Zhang, Bo,Li, Changzhi,et al. Tungsten Carbide: A Remarkably Efficient Catalyst for the Selective Cleavage of Lignin C-O Bonds[J]. CHEMSUSCHEM,2016,9(22):3220-3229.
APA Guo, Haiwei.,Zhang, Bo.,Li, Changzhi.,Peng, Chang.,Dai, Tao.,...&Zhang, Tao.(2016).Tungsten Carbide: A Remarkably Efficient Catalyst for the Selective Cleavage of Lignin C-O Bonds.CHEMSUSCHEM,9(22),3220-3229.
MLA Guo, Haiwei,et al."Tungsten Carbide: A Remarkably Efficient Catalyst for the Selective Cleavage of Lignin C-O Bonds".CHEMSUSCHEM 9.22(2016):3220-3229.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Guo, Haiwei]'s Articles
[Zhang, Bo]'s Articles
[Li, Changzhi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Guo, Haiwei]'s Articles
[Zhang, Bo]'s Articles
[Li, Changzhi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Guo, Haiwei]'s Articles
[Zhang, Bo]'s Articles
[Li, Changzhi]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.