四硫化三铁-石墨烯复合催化剂降解木素结构单元模型物丁香酸  

Degradation of Lignin Model Component-Syringic Acid by Fe3S4-Graphene Composite Catalyst

作　　者：胡晨阳 张健 程璇 李丹 黄梦璇 安俊健[1,2,3] 王磊 王浩[4] HU Chenyang;ZHANG Jian;CHENG Xuan;LI Dan;HUANG Mengxuan;AN Junjian;WANG Lei;WANG Hao(Hubei Provincial Key Laboratory of Green Materials for Light Industry,Hubei University of Technology,Wuhan,Hubei Province,430068;Collaborative Innovation Center of Green Light-weight Materials and Processing,Hubei University of Technology,Wuhan,Hubei Province,430068;College of Light Industry and Food Engineering,Guangxi University,Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control,Nanning,Guangxi Zhuang Autonomous Region,530004;China Tobacco Hubei Industrial LLC,Wuhan,Hubei Province,430030;Hubei Xinye Tobacco Sheet Development Co.,Ltd.,Wuhan,Hubei Province,430000)

机构地区：[1]湖北工业大学绿色轻工材料湖北省重点实验室,湖北武汉430068 [2]绿色轻质材料与加工湖北工业大学协同创新中心,湖北武汉430068 [3]广西大学轻工与食品工程学院,广西清洁化制浆造纸与污染控制重点实验室,广西南宁530004 [4]湖北中烟工业有限责任公司,湖北武汉430030 [5]湖北新业烟草薄片开发有限公司,湖北武汉430000

出　　处：《中国造纸》2020年第1期1-8,共8页China Pulp & Paper

基　　金：绿色轻工材料湖北省重点实验室暨绿色轻质材料与加工湖北工业大学协同创新中心开放基金项目(201710A09);广西清洁化制浆造纸与污染控制重点实验室开放基金(KF201814-4)。

摘　　要：以具有类Fenton催化活性的Fe3S4为主催化剂,采用原位生长的方式将其负载在较高比表面积的石墨烯载体上,制备出具有较高催化活性的Fe3S4-石墨烯(Fe3S4-G)复合催化剂。将该复合催化剂和H2O2构成多相类Fenton反应(Fe3S4-G-H2O2)体系,利用其催化产生的羟基自由基降解木素结构单元模型物丁香酸。研究了多相类Fenton反应过程中催化剂中铁元素与石墨烯质量比、催化剂用量、H2O2用量、pH值以及时间、温度等对降解效率的影响。结果表明,在催化剂中铁元素与石墨烯质量比为28∶1、pH值为3.02、催化剂用量为0.03 g、H2O2浓度为10 mmol/L时,丁香酸(32 mg/L)的降解率达到98.7%。In order to achieve a high catalytic activity,a composite catalyst was prepared by loading Fe3S4 of high Fenton-like catalytic activi ty on graphene carrier of high specific surface area through in-situ growth.The composite catalyst was then combined with hydrogen peroxide to form a heterogeneous Fenton reaction system.The hydroxyl radical generating from the system was used to degrade lignin model compo nent-syringic acid.The effects of experimental parameters such as catalyst to carrier ratio,catalyst dosage,hydrogen peroxide dosage,pH,time and temperature on the degradation efficiency were studied in detail.Under the optimum reactive conditions(Fe/grapheme ratio 28∶1,pH value 3.02,catalyst amount 0.03 g,concentration of H2O210 mmol/L),the degradation rate of syringic acid(32 mg/L)reached 98.7%.

关 键 词：多相类Fenton技术 Fe3S4 石墨烯 木素结构单元模型物 丁香酸 

分 类 号：X793[环境科学与工程—环境工程]