title: Catalytic depolymerization of the hydrolyzed lignin over mesoporous catalysts.
abstract: In this work, the mesoporous SBA-15 and a series of modified catalysts based on it, such as Al-SBA-15 and Ni/Al-SBA-15, were synthesized and used for eliminating the char formation during the depolymerization of hydrolyzed lignin. The temperature, time and solvent effects on the lignin depolymerization were also investigated. Results showed that the repolymerization was effectively suppressed over SBA-15 due to its well-ordered pore structure and large pore size. The addition of Al and Ni elements in SBA-15 could improve the lignin depolymerization performance and saturate the instable intermediates. Ethanol was found to be more effective in suppressing repolymerization than other solvents. 81.4% liquefaction degree and 21.90wt% monomer yield was achieved, and no obvious char was observed after the depolymerization of hydrolyzed lignin in ethanol solvent at 300°C for 4h over Ni/Al-SBA-15(20) catalyst.
authors.affiliation: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Pengru
authors.initials: P
authors.lastname: Chen
authors.affiliation: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Riyang
authors.initials: R
authors.lastname: Shu
authors.affiliation: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China. Electronic address: xuying@ms.giec.ac.cn.
authors.forename: Ying
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China.
authors.forename: Longlong
authors.initials: L
authors.lastname: Ma
authors.affiliation: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China.
authors.forename: Tiejun
authors.initials: T
authors.lastname: Wang
mesh_terms: D000535:Aluminum / Q000737:chemistry; D002384:Catalysis; D000431:Ethanol / Q000737:chemistry; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry; D009532:Nickel / Q000737:chemistry; D058105:Polymerization; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013696:Temperature
chemical_list: C509969:SBA-15; D012997:Solvents; D000431:Ethanol; D012822:Silicon Dioxide; D009532:Nickel; D008031:Lignin; D000535:Aluminum
keywords: Char; Hydrolyzed lignin; Ni/Al-SBA-15; Phenolic monomer; Pore size