石化產業有害廢氣排放逸散之特徵研究(整合型計劃第一年)─子計劃5：利用奈米級CeO2觸媒催化芳香桱類揮發性有機物之焚化

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Title:	石化產業有害廢氣排放逸散之特徵研究(整合型計劃第一年)─子計劃5：利用奈米級CeO2觸媒催化芳香桱類揮發性有機物之焚化 Catalytic incineration of aromatic VOCs by the nano-size CeO2 cataly st
Authors:	蔡瀛逸
Contributors:	環境工程與科學系
Keywords:	催化焚化芳香族碳氫化合物奈米級CeO2 質量空間速率 VOCs 濃度耐用性 Catalytic incineration nano-size CeO2 weight hourly space velocity VOCs concentration;durability
Date:	2004
Issue Date:	2008-06-19 16:48:45 (UTC+8)
Publisher:	台南縣：嘉南藥理科技大學環境工程與科學系
Abstract:	經由測試七種金屬氧化物觸媒催化焚化芳香烴化合物，吾人發現奈米級CeO2 的催化作用是7種金屬中活性最好的。利用eO2觸媒，完全氧化甲苯溫度需達到240 。在焚化對-二甲苯時，有相似的結果，但是苯的焚化則較困難。在製備CeO2觸媒上，有四個不同的方法，其中以過氧化氫還原法製備的觸媒活性最好，所以後續研究均選擇該觸媒。在VOCs焚化反應中，欲將甲苯100%氧化，則在高的質量空間速率(weight hourly space velocity, WHSV)及高的甲苯濃度時，反應溫度亦需較高。CeO2觸媒耐用性頗佳，但有SO2存在時，會造成不可逆之活性衰減。 We tested the efficacy of a set of seven metal oxide catalysts in the catalytic incineration of aromatic hydrocarbons and found nano-size CeO2 to be the most active of the seven. Using CeO2, complete oxidation of toluene was achieved at 240℃. There was a similar outcome in the incineration of p-xylene, whereas benzene was more refractory. In preparation of the CeO2 catalyst, four different methods were evaluated and a redox reaction in hydrogen peroxide was found to produce the most active catalyst. Hence the most active CeO2 catalyst was used for the following tests. In the reaction, a higher reaction temperature was necessary for 100% conversion of toluene at higher values of weight hourly space velocity (WHSV) and higher toluene concentrations. The stability of CeO2 was excellent, although the presence of SO2 caused an irrecoverable decline in activity.
Relation:	計畫編號：CNEE9304_5
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Chna Project

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