本研究中使用初濕含浸法(incipient
impregnation)，合成添加不同助催化劑之
CeO2/-Al2O3觸媒，並藉由分析酚轉化率
與TOC去除率，評估不同觸媒對於含酚廢
水WAO反應之催化效能，以篩選出最適合
添加之助催化劑，同時對於使用過之觸媒
做再生方法評估，以製備活性及耐用性更
好之觸媒。本研究所添加之助催化劑包括
Mn、Mo、Cr、Fe(II)，添加量固定為5wt%，
Ce含量則為15wt%。研究結果顯示，添加
Mn時，對於1000ppm含酚廢水，在220℃、
1.5MPa氧氣分壓及3g/l觸媒添加量下，4hr
酚轉化率及COD去除率，分別約在95%及
80%左右，催化效果已接近未添加助催化
劑之CeO2/γ-Al2O3(15wt%或20wt%鈰) 觸
媒。在180℃，其他反應條件相同之下，對
於觸媒再生之測試，吾人發現添加之觸媒
中，再生效率以添加Mn者較為理想，再生
方法則以鹽酸再生之處理效能較佳，再生
後幾乎完全可以達到原來之活性，顯示添
加Mn之擔體鈰觸媒耐用性甚佳。 In this study, we prepared
promoter-adding supported ceria catalysts to
identify a cost-effective alternative to the
pure CeO2 catalyst. By using the incipient
impregnation method, the CeO2/γ-Al2O3
catalyst with addition of various promoters
(Mn, Mo, Cr, and Fe(II)) was tested for
CWAO of phenol. Via rate of phenol
conversion and COD removal, performance
of the catalysts was evaluated to screen for
the optimal one. Moreover, various
regeneration methods were also tested to
identify the most efficient one to prepare an
active and durable catalyst. With fixed
amount of promoter (5wt%) and Ce species
(15wt%), the results showed that
MnO2-CeO2/γ-Al2O3 was the most active
one. At the condition of 1000 ppm phenol
concentration, 220 ℃ , 1.5 MPa of O2
pressure and 3.0 g/l the catalyst loading, the
phenol conversion and COD removal after
4 hrs reaction were 95% and 80%,
respectively. As for efficiency of
regeneration, it was found that regenerated
MnO2-CeO2/γ-Al2O3 had higher performance than the other regenerated
catalysts tested. Also note that treating the
used catalyst with HCl solution could almost
completely recover the MnO2-CeO2/γ-Al2O3
activity, the best one among the other
regeneration methods.
