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题名: Versatile Nickel-Lanthanum(III) Catalyst for Direct Conversion of Cellulose to Glycols
作者: Sun, Ruiyan1, 3;  Wang, Tingting2;  Zheng, Mingyuan1;  Deng, Weiqiao2;  Pang, Jifeng1;  Wang, Aiqin1;  Wang, Xiaodong1;  Zhang, Tao1
关键词: cellulose ;  ethylene glycol ;  propylene glycol ;  nickel-lanthanum catalyst ;  dual route ;  theoretical calculation
刊名: ACS CATALYSIS
发表日期: 2015-02-01
DOI: 10.1021/cs501372m
卷: 5, 期:2, 页:874-883
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
英文摘要: Using cellulosic biomass to synthesize bulk quantities of high-value chemicals is of great interest for developing a sustainable biobased society. Especially, direct catalytic conversion of cellulose to glycols, important building blocks for polymers, remains a grand challenge. Herein, we report the development of a versatile binary nickel-lanthanum(III) catalyst for the conversion of cellulose to both ethylene glycol (EG) and propylene glycol (1,2-PG) in a yield of 63.7%, which is one of the best performances reported for this catalytic reaction. Especially, lanthanum(III) exhibited a high level of activity toward the degradation of cellulose (TON = 339) at a very low concentration (0.2 mmol/L). On the basis of density functional theory calculations and experimental analyses, we addressed a dual route for this catalytic mechanism: a major route involving the selective cracking of sugars into C-2 molecules and a minor route involving the hydrogenolysis of sugar alcohols. Lanthanum(III) catalyzes the cleavage of the C-2-C-3 bond in glucose via sequential epimerization and 2,3-hydride shift reactions to form glycolaldehyde, the precursor of EG.
关键词[WOS]: TUNGSTEN CARBIDE CATALYSTS ;  SUPPORTED NI CATALYSTS ;  ETHYLENE-GLYCOL ;  AQUEOUS-MEDIA ;  ACID CATALYSTS ;  HYDROLYTIC HYDROGENATION ;  BIMETALLIC CATALYSTS ;  PLATFORM CHEMICALS ;  PROPYLENE-GLYCOL ;  SUGAR ALCOHOLS
语种: 英语
WOS记录号: WOS:000349275300044
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145987
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Sun, Ruiyan,Wang, Tingting,Zheng, Mingyuan,et al. Versatile Nickel-Lanthanum(III) Catalyst for Direct Conversion of Cellulose to Glycols[J]. ACS CATALYSIS,2015,5(2):874-883.
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