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Synthesis of Cumene from Lignin by Catalytic Transformation
Feng Jin1, Ming-hui Fan2, Qi-fang Jia1, Quan-xin Li1
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, China;2.Anhui Key Laboratory of Tobacco Chemistry, China Tobacco Anhui Industrial. Co., LTD, Hefei 230088, China
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 the[bmim]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.
Key words:  Lignin  Cumene  Catalytic pyrolysis  Dealkylation  Alkylation
FundProject:This work was supported by the National Key Basic Program of China (No.2013CB228105),the Program for Changjiang Scholars and Innovative Research Team in University and the Fundamental Research Funds for the Central Universities (No.wk2060190040).
木质素催化转化制备异丙苯
金凤1, 范明慧2, 贾启芳1, 李全新1
1.中国科学技术大学化学物理系, 安徽省生物质洁净能源重点实验室, 中国科学院城市污染物转化重点实验室, 合肥 230026;2.安徽烟草化学重点实验室, 安徽中烟工业有限责任公司, 合肥 230088
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DOI:10.1063/1674-0068/30/cjcp1703038
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