原位合成CuO/ZnO-Al_2O_3水滑石衍生催化剂催化湿式空气氧化苯酚  

In-situ systhesis of CuO/ZnO-Al_2O_3 catalysts derived from hydrotalcite precursor for catalytic wet air oxidation of phenolic

作　　者：白金[1] 丁力 刘鑫尧 王新明 张磊[1] 韩蛟[1] 刘道胜[1] 王香攀 BAI Jin;DING Li;LIU Xinyao;WANG Xinrning;ZHANG Lei;HAN Jiao;LIU Daosheng;WANG Xiangpan(College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001;Cnooc Oil ＆ Gas （Taizhou） Petroehemical Co. LTD, Taizhou 225003)

机构地区：[1]辽宁石油化工大学化学化工与环境学部,抚顺113001 [2]中海油气(泰州)石化有限公司,泰州225003

出　　处：《环境科学学报》2018年第6期2360-2366,共7页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.21376237);辽宁省博士科研启动基金(No.201601322);辽宁省教育厅科学研究一般项目(No.L2015296)~~

摘　　要：采用原位合成法在γ-Al_2O_3表面合成了锌铝水滑石,再采用浸渍法制备了CuO/ZnO-Al_2O_3水滑石衍生催化材料,并将其应用于催化湿式空气氧化苯酚.同时,采用XRD、SEM、BET、H_2-TPR和N_2O滴定等手段对催化剂进行了表征,探讨了CuO含量对CuO/ZnO-Al_2O_3催化剂催化性能的影响.结果表明,当CuO负载量为10%时,催化剂的Cu比表面积最大,催化性能最佳,在200℃、2 MPa空气、苯酚初始浓度500 mg·L^(-1)的条件下,COD去除率为95.3%.Zn Al-LDHs（ Zn Al layered double hydroxides） was synthesized on γ-Al2 O3 by in-situ synthesis method,and then the CuO/ZnO-Al2 O3 catalysts were prepared by wet impregnation method for the catalytic wet air oxidation of phenolic wastewater. The effect of CuO mass fraction on the performance of CuO/ZnO-Al2 O3 catalysts was discussed,and the catalysts were studied by XRD,SEM,H2-TPR,N2 adsorption techniques and N2 O titration. The results showed that when the CuO was 10%,the Cu surface area of catalyst was largest and the catalytic activity was the best,i.e.,when the initial concentration of phenol was 500 mg·L（-1）,the COD removal was 95.3% after 4 h at 200 ℃ and 2 MPa air.

关 键 词：水滑石 原位合成 催化湿式空气氧化 苯酚 去除率 

分 类 号：X131[环境科学与工程—环境科学]