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Title:
Investigation on the cleavage of beta-O-4 linkage in dimeric lignin model compound over nickel catalysts supported on ZnO-Al2O3 composite oxides with varying Zn/Al ratios
Author: Xu, Chen1,2; Tang, Si-Fu1; Sun, Xianyong3; Sun, Yuanyuan1; Li, Guangci1; Qi, Jingbo1,2; Li, Xiaoyu1,2; Li, Xuebing1
Source: CATALYSIS TODAY
Issued Date: 2017-12-01
Volume: 298, Pages:89-98
Keyword: Lignin ; HDO ; beta-O-4 linkage ; Catalytic depolymerization ; ZnO-Al2O3 composite
DOI: 10.1016/j.cattod.2017.05.048
DOC Type: Article
English Abstract: Catalytic depolymerization of lignin is still a challenge due to its low conversion and repolymerization of the reactive intermediates. Reductive depolymerization over supported nickel catalysts with probable surface acidic and basic properties is a very promising process. It is therefore very important to investigate the effect of acidity and basicity of the supports on catalytic reactivity. In this paper, we synthesized a series of nickel based catalysts supported on ZnO-Al2O3 composites with varying Zn/Al atom ratios (Zn/Al = 2, 3, 5, 8) and tested their catalytic performances over a model compound 2-phenoxy-1-phenylethanone containing beta-O-4 bond. All these catalysts showed 100% conversion by reacting at 250 degrees C for 2 h under 2 MPa of H-2. Higher selectivity towards ethylcyclohexane could be obtained over the catalyst Ni/ZnO-Al2O3-5. The possible cleavage pathways of selective oxidized beta-O-4 ether linkage have been proposed.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Subject Extended: Chemistry ; Engineering
WOS Keyword Plus: LIGNOCELLULOSIC BIOMASS ; NI/AL2O3 CATALYST ; REACTION NETWORK ; FORMIC-ACID ; ARYL ETHERS ; CONVERSION ; NI ; HYDRODEOXYGENATION ; DEPOLYMERIZATION ; HYDROGENATION
Indexed Type: SCI ; ISTP
Funder: National Natural Science Foundation of China(21276263 ; 21761132006 ; U1162203 ; 21676287)
Language: 英语
WOS ID: WOS:000412315000013
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/9604
Appears in Collections:多相催化转化团队_期刊论文

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description.institution: 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Natl Inst Clean & Low Carbon Energy NICE, Beijing 102211, Peoples R China

Recommended Citation:
Xu, Chen,Tang, Si-Fu,Sun, Xianyong,et al. Investigation on the cleavage of beta-O-4 linkage in dimeric lignin model compound over nickel catalysts supported on ZnO-Al2O3 composite oxides with varying Zn/Al ratios[J]. CATALYSIS TODAY,2017,298:89-98.
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