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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/496


    標題: 利用含助催化劑體鈰觸媒催化含酚廢水濕式氧化反應-最適助催化劑與最適再生方法之探討
    Catalytic Wet Air Oxidation of Phenol by Adding Metal Promoter on Supported Ceria Catalyst—A Study on Optimal Promoter and Regenerated Method
    作者: 陳煜斌
    貢獻者: 環境工程與科學系
    關鍵字: 含酚廢水
    濕式氧化反應
    CeO2/γ-Al2O3觸媒
    助催化劑
    觸媒再生
    Phenolic wastewater
    Catalytic wet air oxidation
    CeO2/γ-Al2O3
    Promoter
    日期: 2006
    上傳時間: 2008-05-19 10:18:14 (UTC+8)
    出版者: 台南縣:嘉南藥理科技大學環境工程與科學系
    摘要: 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.
    關聯: 計畫編號 : CNEE9503
    Appears in Collections:[環境工程與科學系(所)] 校內計畫

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