银/分子筛催化臭氧氧化降解含硅间甲酚废水  

Catalytic ozonation degradation of siliceous m -cresol wastewaterover Ag/molecular sieve

作　　者：武春艳 赵颖[2] 王亚俐 王盛哲 姚晨星 卫皇曌[2] 孙承林[2] Wu Chunyan;Zhao Ying;Wang Yali;Wang Shengzhe;Yao Chenxing;Wei Huangzhao;Sun Chenglin(Beijing North Energy Conservation and Environment Protection Co.,Ltd.,Beijing 100070,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China;Yulin University,Yulin 719099,Shaanxi,China;College of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Dalian Polytechnic University,Dalian 116034,Liaoning,China)

机构地区：[1]北京北方节能环保有限公司,北京100070 [2]中国科学院大连化学物理研究所,辽宁大连116023 [3]榆林学院,陕西榆林719099 [4]中国科学院大学化学工程学院,北京100049 [5]大连工业大学,辽宁大连116034

出　　处：《工业催化》2023年第4期70-76,共7页Industrial Catalysis

基　　金：陕西省重点研发计划(2021SF-449);中国科学院洁净能源创新研究院-榆林学院联合基金(2021003)。

摘　　要：制备了银(Ag)/不同硅铝比的分子筛催化剂,其中Ag/β(40)催化剂在催化臭氧氧化抗硅除酚反应体系中表现出良好的抗硅性能和活性。考察Ag负载量、H 2还原温度对Ag/β(40)催化剂活性的影响,在最佳制备条件下吸硅率为5.4%,TOC去除率为74.3%,间甲酚转化率96.1%。通过H 2-TPR、粉末X射线衍射、扫描电子显微镜,透射电子显微镜、氮气物理吸附-脱附对Ag/β(40)进行表征,并与其他催化剂进行活性和抗硅性能对比,表明500℃下还原的1Ag/β(40)-H500催化剂有较高的抗硅性及活性,Si的存在对其活性影响不大。Ag/molecular sieve catalysts with different Si/Al ratios were prepared in this article,in which Ag/β(40)catalyst showed good silicon resistance and activity in the reaction system of anti silicon and phenol removal by catalytic ozonation.The effects of Ag loading and H 2 reduction temperature on activity of catalysts were investigated.Under the optimal preparation conditions,the silicon removal efficiency was 5.4%,TOC removal efficiency was 74.3%,and m-cresol conversion was 96.1%.Ag/β(40)was characterized by H 2-TPR,powder X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),and nitrogen physical adsorption-desorption,and compared with other catalysts in activity and silicon resistance.It was proved that 1Ag/β(40)-H500 had high silicon resistance and activity,and the presence of Si had little effect on its activity.

关 键 词：水污染防治工程 Ag/分子筛 催化臭氧氧化 抗硅 间甲酚 

分 类 号：X703[环境科学与工程—环境工程] TQ426.6[化学工程]