title: One-step ethanolysis of lignin into small-molecular aromatic hydrocarbons over nano-SiC catalyst.
abstract: Catalytic depolymerization of lignin for preparation of aromatic hydrocarbons without external hydrogen was first carried out over nano-SiC catalyst in supercritical ethanol. Mixture of the catalyst and lignin was innovatively suspended in a closed reactor and small-molecular aromatic hydrocarbons were successfully achieved at 500°C. Results revealed that not only did conversion of lignin increase sharply under the nano-SiC catalyst, but also phenols were not detected. The increase of residence time under the Fe-SiC catalyst did not change distribution of the liquid products besides the yield improvement, suggesting that the catalyst was suitable and selective towards formation of small-molecular benzenes, especially C6-C8benzenes. Preliminary studies found that lignin depolymerization and deoxygenation were successfully fulfilled during the reactions, which provided a very effective route to conversion of lignin into high added-value molecules as transportation fuel additives.
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, China. Electronic address: yg_chen80@sina.com.
authors.forename: Yigang
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, China.
authors.forename: Yingjie
authors.initials: Y
authors.lastname: Jia
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Yang
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, China.
authors.forename: Xianming
authors.initials: X
authors.lastname: Zhang
mesh_terms: D017554:Carbon Compounds, Inorganic / Q000737:chemistry*; D002384:Catalysis; D000431:Ethanol / Q000737:chemistry; D006841:Hydrocarbons, Aromatic / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry; D008031:Lignin / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D010636:Phenols / Q000032:analysis / Q000737:chemistry; D058105:Polymerization; D017655:Silicon Compounds / Q000737:chemistry*; D013696:Temperature
chemical_list: D017554:Carbon Compounds, Inorganic; D006841:Hydrocarbons, Aromatic; D010636:Phenols; D017655:Silicon Compounds; D000431:Ethanol; D006859:Hydrogen; D008031:Lignin; C022088:silicon carbide
keywords: Aromatic hydrocarbons; Benzenes; Lignin; Nano-SiC