Effect of morphology on the performance of CeO2 for catalytic wet air oxidation of phenol
ZHANG Xuan-jiao1, SUN Yu1, LIU Ming2, HAO Shu-min1, YANG Tao1, ZHANG Lei1, BAI Jin1, HAN Jiao1
1. College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China; 2. Ketone Benzene Workshop of Fushun Petrochemical Company First Petroleum Plant, Fushun 113004, China
Abstract：Three CeO2 catalytic materials with different morphologies were prepared with hydrothermal method, precipitation method and sol-gel method, and then used in Catalytic Wet Air Oxidation (CWAO) of phenol aqueous solution. The effect of CeO2 morphology and structure on the performance of CWAO of phenol aqueous solution was investigated. The CeO2 catalytic materials were characterized via SEM, TEM, XRD and TPR. The results indicated that the CeO2 catalytic material synthesized with the hydrothermal method exhibited the best catalytic activity mainly due to the nanorod morphology, which exposed (220) crystal surface, growing along (220) crystal direction. Under the reaction conditions of temperature of 200℃, the air pressure of 2MPa, and the initial concentration of phenol at 500mg/L, the final COD removal rate (240min) could reach as high as 95.5%.
张宣娇, 孙羽, 刘明, 郝书敏, 杨涛, 张磊, 白金, 韩蛟. CeO2形貌结构对催化湿式空气氧化苯酚性能的影响[J]. 中国环境科学, 2020, 40(10): 4330-4334.
ZHANG Xuan-jiao, SUN Yu, LIU Ming, HAO Shu-min, YANG Tao, ZHANG Lei, BAI Jin, HAN Jiao. Effect of morphology on the performance of CeO2 for catalytic wet air oxidation of phenol. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(10): 4330-4334.
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