Lignin depolymerization (LDP) in alcohol over nickel-based catalysts via a fragmentation-hydrogenolysis process

	Lignin depolymerization (LDP) in alcohol over nickel-based catalysts via a fragmentation-hydrogenolysis process
	Song, Qi 1,2; Wang, Feng 1; Cai, Jiaying 1,2; Wang, Yehong 1; Zhang, Junjie 1,2; Yu, Weiqiang 1; Xu, Jie 1
刊名	energy & environmental science
	2013-03-01
卷号	6 期号:3 页码:994-1007
通讯作者	徐杰 ; 王峰
产权排序	待补充
合作状况	英
英文摘要	valorization of native birch wood lignin into monomeric phenols over nickel-based catalysts has been studied. high chemoselectivity to aromatic products was achieved by using ni-based catalysts and common alcohols as solvents. the results show that lignin can be selectively cleaved into propylguaiacol and propylsyringol with total selectivity >90% at a lignin conversion of about 50%. alcohols, such as methanol, ethanol and ethylene glycol, are suitable solvents for lignin conversion. analyses with maldi-tof and nmr show that birch lignin is first fragmented into smaller lignin species consisting of several benzene rings with a molecular weight of m/z ca. 1100 to ca. 1600 via alcoholysis reaction. the second step involves the hydrogenolysis of the fragments into phenols. the presence of gaseous h-2 has no effect on lignin conversion, indicating that alcohols provide active hydrogen species, which is further confirmed by isotopic tracing experiments. catalysts are recycled by magnetic separation and can be reused four times without losing activity. the mechanistic insights from this work could be helpful in understanding native lignin conversion and the formation of monomeric phenolics via reductive depolymerization.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology ; life sciences & biomedicine
类目[WOS]	chemistry, multidisciplinary ; energy & fuels ; engineering, chemical ; environmental sciences
研究领域[WOS]	chemistry ; energy & fuels ; engineering ; environmental sciences & ecology
关键词[WOS]	o bond-cleavage ; deuterium-exchange-reactions ; oxygen-mediated degradation ; steam-exploded lignin ; model compounds ; palladium catalysts ; oxidation-products ; isotope-exchange ; hardwood lignin ; h/d exchange
收录类别	SCI
资助信息	1，1
原文出处	1007
语种	英语
WOS记录号	WOS:000315165700036
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119313]
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
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Song, Qi,Wang, Feng,Cai, Jiaying,et al. Lignin depolymerization (LDP) in alcohol over nickel-based catalysts via a fragmentation-hydrogenolysis process[J]. energy & environmental science,2013,6(3):994-1007.
APA	Song, Qi.,Wang, Feng.,Cai, Jiaying.,Wang, Yehong.,Zhang, Junjie.,...&Xu, Jie.(2013).Lignin depolymerization (LDP) in alcohol over nickel-based catalysts via a fragmentation-hydrogenolysis process.energy & environmental science,6(3),994-1007.
MLA	Song, Qi,et al."Lignin depolymerization (LDP) in alcohol over nickel-based catalysts via a fragmentation-hydrogenolysis process".energy & environmental science 6.3(2013):994-1007.