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題名 | 苯於負載式銀觸媒之全氧化反應=Total Oxidation of Benzene over Supported Silver Catalysts |
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作者 | 廖炳傑; 李昱賢; 陳吟足; | 書刊名 | 南亞學報 |
卷期 | 36 2016.12[民105.12] |
頁次 | 頁429-445 |
分類號 | 460.02 |
關鍵詞 | 苯; 全氧化; 銀觸媒; 擔體; Benzene; Total oxidation; Ag catalyst; Support; |
語文 | 中文(Chinese) |
中文摘要 | 本研究以共沉澱法將MnOx引入CeO2及Ce0.9Zr0.1O2製備具良好redox特性的Ce1-xMnxO2與Ce0.9-xZr0.1MnxO2共氧化物作為觸媒擔體,並以含浸法製備Ag/Ce1-xMnxO2與Ag/Ce0.9-xZr0.1MnxO2觸媒進行揮發性有機物苯的全氧化反應。引入適量MnOx可使其進入CeO2晶格中形成Ce-Mn-O固溶物,提升Ce1-xMnxO2擔體的redox特性及缺陷氧的比例。共氧化物擔體本身對苯即有不錯的全氧化反應活性,負載Ag後反應活性大幅提升。於質流比F/W = 12,000 ml hr-1 g-1條件下,最適觸媒7%Ag/Ce0.6Mn0.4O2 於185 °C即可將苯(1000 ppm)完全氧化,活性優於貴金屬鈀觸媒。 |
英文摘要 | In this study, MnOx was introduced into CeO2 and Ce0.9Zr0.1O2 to prepare mixed oxides of Ce1-xMnxO2 and Ce0.9-xZr0.1MnxO2 by co-precipitation method. The resulted mixed oxides had good redox properties and were used as supports for preparing Ag/Ce1-xMnxO2 and Ag/Ce0.9-xZr0.1MnxO2 catalysts by impregnation for use in the reaction of benzene total oxidation. An appropriate amount of MnOx could enter into the ceria lattice to form Ce-Mn-O solid solution, improving the redox property and the ratio of defect oxygen. The support of mixed oxides itself exhibited considerable activity in benzene total oxidation and the activity was significantly enhanced after loading silver on support. Under the mass flow rate of F/W = 12,000 ml hr-1 g-1, the best catalyst 7%Ag/Ce0.6Mn0.4O2 could completely converted benzene (1000 ppm) at 185 °C, which exhibited a higher activity than did of the noble metal catalyst 0.3%Pd/ Ce0.6Mn0.4O2. |
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