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超临界甲醇中Ce/Cu/Zn/Al催化木质素制备酚类化合物的研究
引用本文:黄钰,包桂蓉,罗嘉,杨智翔,刘果,惠硕,陈靖,李佳蔚.超临界甲醇中Ce/Cu/Zn/Al催化木质素制备酚类化合物的研究[J].分子催化,2020,34(1):58-64.
作者姓名:黄钰  包桂蓉  罗嘉  杨智翔  刘果  惠硕  陈靖  李佳蔚
作者单位:昆明理工大学,昆明理工大学,昆明理工大学,昆明理工大学,昆明理工大学,昆明理工大学,昆明理工大学
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
摘    要:采用共沉淀法制备Ce/Cu/Zn/Al催化剂,并将其应用于超临界甲醇中木质素的催化液化.考察单因素条件对木质素转化率和生成酚类的影响,得到最佳反应条件:反应温度320℃,反应时间120 min,催化剂用量150 mg,初始压力2 MPa,木质素的转化率达到67.33%,酚类产率达到30.84%.同时,以苯酚及愈创木酚为模型物,比较有无催化剂对液化产物分布或选择性生成的影响. Ce/Cu/Zn/Al催化剂的加入促进了甲醇的重整及其与模型化合物苯酚、愈创木酚的烷基化反应,从而生成了大量的烷基苯酚.

关 键 词:木质素  催化液化  Cu/Zn/Al催化剂  苯酚  超临界甲醇
收稿时间:2020/2/1 0:00:00
修稿时间:2020/3/8 0:00:00

Study on Ce/Cu/Zn/Al Catalyzed Conversion of Lignin to Phenols in Supercritical Methanol
HUANG Yu,BAO Gui-rong,LUO JIA,YANG Zhi-xiang,LIU Guo,HUI Shuo,CHEN Jing and LI Jia-wei.Study on Ce/Cu/Zn/Al Catalyzed Conversion of Lignin to Phenols in Supercritical Methanol[J].Journal of Molecular Catalysis (China),2020,34(1):58-64.
Authors:HUANG Yu  BAO Gui-rong  LUO JIA  YANG Zhi-xiang  LIU Guo  HUI Shuo  CHEN Jing and LI Jia-wei
Institution:Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming University of Science and Technology
Abstract:Cu / Zn / Al / Ce catalyst was prepared by co-precipitation method and applied to the catalytic liquefaction of lignin in supercritical methanol.The effects of single conditions on lignin conversion and phenol formation were investigated, and the optimal reaction conditions were obtained: reaction temperature 320 °C, reaction time 120 min, catalyst dosage 150 mg, initial pressure 2 MPa.The conversion rate of lignin reached 67.33%, and the yield of phenols reached 30.84%.At the same time, the effects of the presence or absence of catalysts on the types and selectivities of liquefied products were analyzed using phenol and guaiacol as model substances.. Cu / Zn / Al / Ce promoted the reformation of methanol and its alkylation reaction with model compounds phenol and guaiacol, so that a large amount of alkylphenol was formed.
Keywords:lignin  Catalytic liquefaction  Cu/Zn/Al catalyst  Phenols  Supercritical methanol  
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