中性pH条件下Fe/Cu/沸石催化非均相Fenton降解水中苯并三唑  

HETEROGENEOUS FENTON DEGRADATION OF BENZOTRIAZOLE IN WATER BY Fe/Cu/ZEOLITE CATALYST AT NEUTRAL pH VALUE

作　　者：尚晓涵 朱小彪[1] SHANG Xiao-han;ZHU Xiao-biao(College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《环境工程》2021年第2期10-15,共6页Environmental Engineering

摘　　要：采用溶胶-凝胶法制备Fe/Cu/沸石非均相Fenton催化剂,并利用XPS和SEM等技术进行了表征;优化了中性p H下催化降解水中苯并三唑的反应条件,并考察了材料的重复使用性能;讨论了催化氧化降解BTA的机理。结果表明,催化剂中Fe、Cu纳米粒子呈颗粒状均匀分布于沸石颗粒表面,主要成分为Fe_(2)O_(3)、Fe_(3)O_(4)和Cu O。在中性p H条件下,苯并三唑降解的最佳条件为:H_(2)O_(2)浓度0.08 mol/L,催化剂用量0.41 g/L,反应时间43.6 min,且该催化剂稳定性最佳。催化降解过程中,Fe和Cu协同参与Fenton反应产生·OH,实现了污染物的高效去除。The sol-gel method was used to prepare the Fe/Cu/zeolite catalyst for heterogeneous Fenton oxidation.The reaction conditions of catalytic degradation of benzotriazole in water at neutral p H were optimized,and the reusability of the material was investigated.Finally,the mechanism of catalytic oxidation degradation of BTA was discussed.The results showed that Fe and Cu nanoparticles in the catalyst were uniformly distributed on the surface of the zeolite particles,and the main components were Fe_(2)O_(3),Fe_(3)O_(4) and Cu O.Under neutral p H conditions,the highest degradation rate of benzotriazole was achieved at the concentration of H_(2)O_(2)0.08 mol/L,the catalyst dosage 0.41 g/L and the reaction time 43.6 min.During the catalytic degradation process,Fe and Cu participate in the Fenton reaction to generate·OH radicals,and achieve efficient removal of pollutants.

关 键 词：非均相FENTON 中性pH Fe/Cu双金属 沸石 苯并三唑 

分 类 号：X703[环境科学与工程—环境工程]