Conversion of lignin model compounds under mild conditions in pseudo-homogeneous systems

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	Conversion of lignin model compounds under mild conditions in pseudo-homogeneous systems
	Chen, Lu; Xin, Jiayu; Ni, Lingli; Dong, Huixian; Yan, Dongxia; Lu, Xingmei; Zhang, Suojiang
刊名	GREEN CHEMISTRY
	2016
卷号	18 期号:8 页码:2341-2352
ISSN号	1463-9262
英文摘要	To produce basic chemicals from lignin, depolymerization and removal of oxygen from lignin through C-O cleavage and hydrodeoxygenation (HDO) are crucial steps. In this study, a novel, pseudo-homogeneous catalyst system, consisting of uniformly stabilized noble metal nanoparticles (NPs) in ionic liquids is developed for the selective reductive cleavage of C-O and HDO. Phenol and guaiacol as lignin monomer model compounds are investigated to gain an insight into the possible HDO pathway, meanwhile, dimeric model compounds such as diphenyl ether and benzyl phenyl ether are studied for the cleavage of C-O bonds between aromatic units. Four types of NPs including Pd, Pt, Rh and Ru were synthesized in situ and well distributed in ILs without aggregation. These catalytic systems displayed almost 100% conversion for various monomeric and dimeric lignin model compounds at 130 degrees C and were recycled several times without loss of activity. The catalytic selectivity of metals for HDO/C-O cleavage normally decreases in the order of Pt > Rh similar to Ru >> Pd, which is similar to the order of NP size, Pd >> Pt > Rh similar to Ru. With a mean diameter of 5.6 nm, Pt NPs in [Bmim] PF6 are identified as the best catalytic system for the transformation of lignin monomeric and dimeric model compounds with an almost 100% conversion and maximum 97% selectivity.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
关键词[WOS]	IMIDAZOLIUM IONIC LIQUIDS ; TRANSITION-METAL NANOPARTICLES ; HYDROGENATION REACTIONS ; RENEWABLE CHEMICALS ; WOOD LIGNIN ; ADIPIC ACID ; CATALYSTS ; BIOMASS ; HYDRODEOXYGENATION ; SOLUBILITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000374413300012
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21008]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Key Lab Green Proc Engn, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chen, Lu,Xin, Jiayu,Ni, Lingli,et al. Conversion of lignin model compounds under mild conditions in pseudo-homogeneous systems[J]. GREEN CHEMISTRY,2016,18(8):2341-2352.
APA	Chen, Lu.,Xin, Jiayu.,Ni, Lingli.,Dong, Huixian.,Yan, Dongxia.,...&Zhang, Suojiang.(2016).Conversion of lignin model compounds under mild conditions in pseudo-homogeneous systems.GREEN CHEMISTRY,18(8),2341-2352.
MLA	Chen, Lu,et al."Conversion of lignin model compounds under mild conditions in pseudo-homogeneous systems".GREEN CHEMISTRY 18.8(2016):2341-2352.