摘要
采用水热合成法和浸渍法合成三金属复合型催化剂Cu/Mn/La/MCM-41分子筛,利用XRD、SEM、BET、FT-IR等表征手段,研究了Cu/Mn/La/MCM-41分子筛样品的形貌和结构。采用Cu/Mn/La/MCM-41分子筛作为催化剂降解活性黑5染料废水,研究其降解活性黑5染料废水的催化性能,并得到其表观动力学方程。结果表明,与含有单金属的材料相比,Cu、Mn、La的负载有利于提高催化剂的活性,晶化温度为120℃,Cu的负载量为20%,Cu/Mn/La的摩尔比为15∶5∶2,其比表面积大、形貌更为规整,120 min活性黑5脱色率可达95.6%,Cu/Mn/La/MCM-41分子筛催化降解活性黑5染料废水的催化动力学符合伪一级动力学曲线。
The three metal composite catalyst Cu/Mn/La/MCM-41 molecular sieve is synthesized by hydrothermal synthesis method and impregnation method.The morphology and structure of Cu/Mn/La/MCM-41 molecular sieve samples are studied by means of XRD,SEM,BET and FT-IR.Cu/Mn/La/MCM-41 molecular sieve is used as catalyst to degrade the reactive black 5 dye wastewater.The catalytic performance of the catalytic degradation of the reactive black 5 dye wastewater is studied and its apparent kinetic equation is obtained.Results show that compared with the material containing a single metal,Cu,Mn,La load can improve the activity of the catalyst.When the crystallization temperature is 120℃,Cu load is 20%,the molar ratio of Cu/Mn/La is 15∶5∶2,the surface area and morphology are larger and more regular.Decolorization rate of reactive black 5 after 120 min can reach 95.6%.Cu/Mn/La/MCM-41 molecular sieve catalytic degradation of reactive black 5 dye waste water dynamics is in line with the pseudo first-order kinetics curves.
作者
涂盛辉
熊超华
林立
孙英豪
陈建新
TU Shenghui;XIONG Chaohua;LIN Li;SUN Yinghao;CHEN Jianxin(College of Resources, Environment and Chemical Engineering, Nanchang University,Nanchang 330031, China;Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education,Nanchang 330031, China)
出处
《功能材料》
CAS
CSCD
北大核心
2021年第7期7064-7071,共8页
Journal of Functional Materials
基金
国家自然科学基金资助项目(21966021)。
