Fe/ZSM-5分子筛催化剂催化湿式过氧化氢氧化处理间甲酚废水的研究  

Degradation of m-cresol-containing wastewater by catalytic wet peroxide oxidation over Fe/ZSM-5 catalysts

作　　者：陈丽丽 刘培娟 卫皇曌[1] 侯作君 赵颖[1] 孙承林[1] CHEN Li-li;LIU Pei-juan;WEI Huang-zhao;HOU Zuo-jun;ZHAO Ying;SUN Cheng-lin(National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China;Beijing New Biolink Technology Development Co.,Ltd.,Beijing 101300,China;Dalian Keduo Environment Technology Co.,Ltd.,Dalian 116000,China)

机构地区：[1]中国科学院大连化学物理研究所,洁净能源国家实验室,辽宁大连116023 [2]中国科学院大学,北京100049 [3]北京鑫佰利科技发展有限公司,北京101300 [4]大连科铎环境科技有限公司,辽宁大连116000

出　　处：《现代化工》2021年第6期90-94,100,共6页Modern Chemical Industry

基　　金：国家自然科学基金(51878643);辽宁省自然科学基金(2020020185-JH2/101)。

摘　　要：采用等体积浸渍法制备Fe/ZSM-5催化剂,并用于催化湿式过氧化氢氧化(CWPO)反应处理间甲酚模型废水。结果表明,Fe的负载量为1%时催化活性和稳定性最优;3.0-F/Z-5催化剂在高温下催化活性的提高主要是溶出Fe的均相催化作用。利用BET、XRD、UV-Vis DR和NH3-TPD对催化剂进行表征并分析其构效关系。结果表明,ZSM-5负载Fe后比表面积减小、5 nm孔减少,说明部分氧化铁在分子筛孔道或表面发生沉积;Fe物种在ZSM-5表面分散均匀;催化剂活性位点为弱酸中心和小尺寸氧化铁颗粒协同作用。Fe/ZSM-5 catalyst is prepared by incipient impregnation and used to catalyze wet peroxide oxidation to treat with m-cresol-containing wastewater.It is shown that the catalytic activity and stability of the catalyst reach the best when the loading amount of Fe is 1%.Higher catalytic activity of 3.0-F/Z-5 at high temperature is mainly contributed by homogeneous catalysis.The catalysts are characterized by N2 adsorption-desorption,X-ray diffraction(XRD),UV-Vis DR and NH3-TPD,and the structure-activity relationship is analyzed.Results show that both BET area and 5 nm pores of ZSM-5 decrease after it has loaded Fe,representing that FexOydeposits on the pore or surface of ZSM-5;Fe species disperse highly on the surface of ZSM-5;the catalytic activity of the catalyst comes from the synergistic effect between weak acid center and small-sized FexOy.

关 键 词：FE ZSM-5分子筛 间甲酚 催化湿式过氧化氢氧化 多相催化 

分 类 号：X703[环境科学与工程—环境工程]