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  

Study on Ce/Cu/Zn/Al Catalyzed Conversion of Lignin to Phenols in Supercritical Methanol

作　　者：黄钰 包桂蓉[2,3] 罗嘉[4] 杨智翔 刘果 惠硕[2,3] 陈靖 李佳蔚 HUANG Yu;BAO Gui-rong;LUO JIA;YANG Zhi-xiang;LIU Guo;HUI Shuo;CHEN Jing;LI Jia-wei(Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650000,China;College of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650000,China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650000,China;Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Kunming 650000,China)

机构地区：[1]昆明理工大学化学工程学院,云南昆明650000 [2]昆明理工大学冶金与能源工程学院,云南昆明650000 [3]昆明理工大学省部共建复杂有色金属资源清洁利用国家重点实验室,云南昆明650000 [4]中国科学院西双版纳热带植物园,云南昆明650000

出　　处：《分子催化》2020年第1期58-64,I0003,共8页Journal of Molecular Catalysis(China)

基　　金：国家自然科学基金(51266003)。

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.Ce/Cu/Zn/Al 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℃,reaction time 120 min,catalyst dosage 150 mg,initial pressure 2 MPa.The conversion 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.Ce/Cu/Zn/Al promoted the reformation of methanol and its alkylation reaction with model compounds phenol and guaiacol,so that a large amount of alkylphenol was formed.

关 键 词：木质素 催化液化 Cu/Zn/Al催化剂 苯酚 超临界甲醇 

分 类 号：O643.32[理学—物理化学]