Tungsten-based catalysts for lignin depolymerization: the role of tungsten species in C-O bond cleavage

doi:10.1039/c9cy00251k

	Tungsten-based catalysts for lignin depolymerization: the role of tungsten species in C-O bond cleavage
	Guo, Haiwei 1,2; Qi, Zaojuan 2; Liu, Yuxuan 2; Xia, Haian 3; Li, Lin 2; Huang, Qitian 2; Wang, Aiqin 2,4; Li, Changzhi 2,4
刊名	CATALYSIS SCIENCE & TECHNOLOGY
	2019-05-07
卷号	9 期号:9 页码:2144-2151
ISSN号	2044-4753
DOI	10.1039/c9cy00251k
通讯作者	Li, Changzhi(licz@dicp.ac.cn)
英文摘要	Tungsten carbide has shown promising activity in lignin depolymerization, but the active site remains unclear yet due to its complicated surface tungsten species. Tungsten-based catalysts with designed species were therefore synthesized for hydrocracking beta-O-4 model compounds and lignin. X-ray diffraction, Raman spectroscopy, physical adsorption, X-ray photoelectron spectroscopy, and transmission electron microscopy as well as the temperature-programmed desorption of ammonia and H-2 microcalorimetric adsorption characterizations were employed to identify and quantify the composition of the as-prepared catalysts. It was found that the catalyst prepared under a N-2 atmosphere at 500 degrees C (N-2-500) had a major tungsten trioxide (WO3) phase and possessed dominantly acidic sites, while poor in terms of metallic sites. With the increasing treatment temperature, there was a clear evolution of the tungsten species from WO3 to W, and then to W2C and WC, along with an increase in metallic sites. As a result, the catalyst treated under 1000 degrees C (N-2-1000) exhibited a proper amount of both acidic sites and metallic sites. The structure-function relationship of the above catalysts was studied for transforming beta-O-4 model compounds and real lignin. In the model compounds reactions, N-2-500 showed poor conversion due to the lack of tungsten carbide species, while N-2-1000 exhibited both dehydration and hydrogenolysis activity due to the existence of balanced tungsten trioxide and tungsten carbide species, and therefore provided much higher yields of beta-O-4 cleavage products. The conversion results of beech dioxasolv lignin fitted well with the model compounds studied. The present work provides a deeper understanding of the role of different tungsten species in lignin depolymerization and makes an important contribution to the chemistry of tungsten-based catalysts in biomass conversion.
资助项目	National Natural Science Foundation of China[21690080] ; National Natural Science Foundation of China[21878288] ; National Natural Science Foundation of China[21690083] ; National Natural Science Foundation of China[21473187] ; DNL cooperation fund CAS[DNL180302] ; Royal Society International Collaboration Award[IC170044] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB17020100]
WOS关键词	LIGNOCELLULOSIC BIOMASS ; PHENOLIC-COMPOUNDS ; ACTIVATED CARBON ; HYDROGENOLYSIS ; CONVERSION ; CHEMICALS ; CARBIDE ; FRACTIONATION ; STRATEGIES ; OXIDATION
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000468630500009
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; DNL cooperation fund CAS ; DNL cooperation fund CAS ; Royal Society International Collaboration Award ; Royal Society International Collaboration Award ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; DNL cooperation fund CAS ; DNL cooperation fund CAS ; Royal Society International Collaboration Award ; Royal Society International Collaboration Award ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; DNL cooperation fund CAS ; DNL cooperation fund CAS ; Royal Society International Collaboration Award ; Royal Society International Collaboration Award ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; DNL cooperation fund CAS ; DNL cooperation fund CAS ; Royal Society International Collaboration Award ; Royal Society International Collaboration Award ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/171925]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Li, Changzhi
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Prov Key Lab Chem & Utilizat Agroforest B, Nanjing 210037, Jiangsu, Peoples R China 4.Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Guo, Haiwei,Qi, Zaojuan,Liu, Yuxuan,et al. Tungsten-based catalysts for lignin depolymerization: the role of tungsten species in C-O bond cleavage[J]. CATALYSIS SCIENCE & TECHNOLOGY,2019,9(9):2144-2151.
APA	Guo, Haiwei.,Qi, Zaojuan.,Liu, Yuxuan.,Xia, Haian.,Li, Lin.,...&Li, Changzhi.(2019).Tungsten-based catalysts for lignin depolymerization: the role of tungsten species in C-O bond cleavage.CATALYSIS SCIENCE & TECHNOLOGY,9(9),2144-2151.
MLA	Guo, Haiwei,et al."Tungsten-based catalysts for lignin depolymerization: the role of tungsten species in C-O bond cleavage".CATALYSIS SCIENCE & TECHNOLOGY 9.9(2019):2144-2151.