硅酸锌铁催化臭氧氧化水体中的丙烯酸  

Degradation of Acrylic Acid in Aqueous Solution with Zinc-Iron Silicate in Catalytic Ozonation

作　　者：刘玥[1] 赵来群 龚为进[1] 赵亮[2] Liu Yue;Zhao Laiqun;Gong Weijin;Zhao Liang(School of Energy&Environment Engineering,Zhongyuan University of Technology,Henan Zhengzhou,450001;Institute of Chemistry Henan Academy of Sciences,Henan Zhengzhou 450002)

机构地区：[1]中原工学院能源与环境学院,河南郑州450001 [2]河南省科学院化学研究所有限公司,河南郑州450002

出　　处：《化工时刊》2020年第3期16-20,共5页Chemical Industry Times

基　　金：河南省高校重点科研项目基金(19B560012);中原工学院自主创新应用研究项目资助(K2019YY011)。

摘　　要：本文利用化学共沉淀法制备了硅酸锌铁颗粒催化剂。采用SEM、EDX和XPS等方法对硅酸锌铁催化剂的结构性质和表面组成进行了表征分析。并构建了非均相催化臭氧氧化体系,考察其催化臭氧氧化降解丙烯酸的性能。结果表明在臭氧流量为18 mg/min,催化剂投加量为500 mg/L,催化臭氧氧化反应20 min,丙烯酸的去除率为96.5%。碳酸盐/重碳酸盐实验以及叔丁醇抑制实验证明,在硅酸锌铁催化臭氧氧化过程中有羟基自由基的生成。Zinc-iron silicate particles were synthesized by the method of chemical co-precipitation.The structural and surface composition of zinc-iron silicate were characterized by SEM,EDX and XPS.The catalytic degradation of acrylic acid was investigated in the zinc-iron silicate catalytic ozonation process.And the results showed that the degradation rate of acrylic acid was 96.5%,when the ozonation reaction was 18 mg/min,the catalyst dose was 500 mg/L and the reaction time was 20 min.CO2-3/HCO-3 and TBA experiments results showed that hydroxyl radicals were generated in the catalytic process.

关 键 词：硅酸锌铁 催化臭氧氧化 丙烯酸 羟基自由基 

分 类 号：O64[理学—物理化学]