采用浸渍法制备 CeO₂ -ZSM-5 分子筛催化剂，并将其用于固定床反应器来湿式催 化氧化苯酚废水． 采用 X 射线衍射、N₂ 吸附和脱附对分子筛的物相结构、比表面积和孔结 构进行表征，然后对比不同温度、床层高度、进料流速对苯酚转化率、H₂ O₂ 转化率、TOC (总有机碳)转化率、活性组分浸出率和 CO₂ 选择性的影响． 表征结果表明，CeO₂ -ZSM-5 分子筛催化剂为微孔材料，负载活性组分前后其晶型没有明显变化，但比表面积减小． 活性评价实验结果表明:随着温度的升高和进料流速的减小，H₂ O₂  转化率、苯酚转化率、 TOC 转化率和 CO₂ 选择性逐渐增大;随着床层高度的增加，H₂ O₂  转化率、苯酚转化率、 TOC 转化率逐渐增大，CO₂ 选择性则逐渐降低;各条件下，催化剂活性组分浸出率较小，稳定性较好，且降解过程不产生副产物．

In this paper,first,CeO₂ -ZSM-5 zeolite catalysts were prepared by means of impregnation method and were applied to the catalytic wet peroxide oxidation of phenol in a fixed bed reactor.Then,the phase structure,specific surface area and pore structure of CeO₂ -ZSM-5 were characterized via XRD and N₂adsorption-desorption.Finally,the effects of temperature,bed height and feed flow rate on the conversion rates of phenol,H₂O₂ and total organic carbon (TOC),as well as on the cerium leaching concentration and the selectivity of CO₂ ,were investiga- ted.Characterization results show that CeO₂ -ZSM-5 catalysts are micro-pore materials; and that，after the loading of active components,the crystal form of CeO₂ -ZSM-5 almost keeps unchanged but the specific surface area decrea- ses.Moreover,from the activity evaluation results,it is found that (1) the conversion rates of phenol,H₂O₂ and TOC,as well as the selectivity of CO₂ all increase with the increase of temperature and with the decrease of feed flow rate; (2) with the increase of bed height,the conversion rates of phenol,H₂O₂ and TOC all increase,while the selectivity of CO₂ decreases; (3) the cerium leaching concentration is small under all conditions,which means that the catalysts possess good stability; and (4) no by-products are observed in the process of CWPO.