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利用水热法制备CeO_2和一系列不同Ce/Mn原子比的Ce_xMn_(1-x)O_2复合氧化物的纳米球,对其进行XRD、XPS、SEM、H_2-TPR和N_2吸附-脱附的表征,并通过催化湿式氧化降解丁酸对催化活性进行测试,结果表明Ce_(0.2)Mn_(0.8)O_2对丁酸的降解呈现出优异的催化性能.该催化剂对高浓度的醋酸、丁酸以及两者混合酸的降解也具有高的催化活性,在185℃、0.9 MPa O_2条件下反应2 h,醋酸、丁酸以及两者混合酸COD(化学需氧量)的去除率分别高达89.8%、99.5%和99.4%.最后,对该催化剂催化湿式氧化降解丁酸、醋酸以及丁酸和醋酸的混合酸进行了动力学和稳定性方面的研究.
Hydrothermal synthesis of CeO_2 and a series of Ce_xMn_ (1-x) O_2 composite oxides with different Ce / Mn atomic ratios were characterized by XRD, XPS, SEM, H_2-TPR and N_2 adsorption-desorption , And the catalytic activity of butyric acid catalyzed by wet oxidation was tested.The results showed that the catalytic activity of Ce 0.2 Mn 0.8 O 2 for the degradation of butyric acid showed excellent catalytic activity for high concentration of acetic acid, The mixed acid also has high catalytic activity. The removal rates of acetic acid, butyric acid and COD (chemical oxygen demand) were 89.8% and 99.5% respectively at 185 ℃ and 0.9 MPa O 2 for 2 h. % And 99.4% respectively.Finally, the kinetics and stability of the mixed acid catalyzed by wet oxidation of butyric acid, acetic acid and butyric acid were studied.