Synthesis of Cumene from Lignin by Catalytic Transformation  

木质素催化转化制备异丙苯

作　　者：金凤[1] 范明慧[2] 贾启芳 李全新[1] 

机构地区：[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

出　　处：《Chinese Journal of Chemical Physics》2017年第3期348-356,I0002,共10页化学物理学报（英文）

摘　　要：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 I%Zn/HZSM-5 catalyst, monocyclic aromatics with the selectivity of 85.7 wt% were obtained. Then, the catalytic dealkylation matics with 93.6 wt% benzene at 600 ℃ of heavier aromatics resulted in benzene-rich aro- over Hβ catalyst. Finally, the cumene synthesis was performed by the aromatic alkylation, giving cumene selectivity of 91.6 C-tool% using the [bmim]Cl-2AlCl3 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.

关 键 词：LIGNIN CUMENE Catalytic pyrolysis DEALKYLATION ALKYLATION 

分 类 号：O[理学]