Synthesis of Cumene from Lignin by Catalytic Transformation |
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| Authors: | Feng Jin Ming-hui Fan Qi-fang Jia Quan-xin Li |
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| Affiliation: | 1.Department of Chemical Physics, Key Laboratory of Urban Polxlutant Conversion, Chinese Academy of Sciences, Anhui Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China2.Anhui Key Laboratory of Tobacco Chemistry, China Tobacco Anhui Industrial. Co., LTD, Hefei 230088, China |
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| Abstract: | Cumene is an important intermediate and chemical in chemical industry.In this work,directional preparation of cumene using lignin was achieved by a three-step cascade process.The mixture aromatics were first produced by the catalytic pyrolysis of lignin at 450℃ over 1% Zn/HZSM-5 catalyst,monocyclic aromatics with the selectivity of 85.7 wt% were obtained.Then,the catalytic dealkylation of heavier aromatics resulted in benzene-rich aromatics with 93.6 wt% benzene at 600℃ over Hβ catalyst.Finally,the cumene synthesis was performed by the aromatic alkylation,giving cumene selectivity of 91.6 C-mol% using thebmim]Cl-2AlCl13 ionic liquid at room temperature for 15 min.Besides,adding a small amount of methanol to the feed can efficiently suppress the coke yield and enhance the aromatics yield.The proposed transformation potentially provides a useful route for production of cumene using renewable lignin. |
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| Keywords: | Lignin Cumene Catalytic pyrolysis Dealkylation Alkylation |
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