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研究生: 楊芸珮
Yang, Yun-Pei
論文名稱: 利用覆膜鐵氧化物催化過氧化氫分解含氮類有機物之研究
Study of supported iron oxides catalyst in oxidation of nitro-organics by hydrogen peroxide
指導教授: 蔡三元
Cai, San-Yuan
學位類別: 碩士
Master
系所名稱: 工學院 - 化學工程學系
Department of Chemical Engineering
論文出版年: 2004
畢業學年度: 92
語文別: 中文
論文頁數: 106
中文關鍵詞: Fenton試劑苯胺鐵氧化物
外文關鍵詞: Aniline, Fenton reagent, Iron oxides
相關次數: 點閱:132下載:3
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  •   實驗中所使用的觸媒是在實廠流體化床反應槽中製備而成,鐵氧化物經分析結果發現,大部分為非結晶態的鐵氧化物。在分解過氧化氫及氧化苯胺的可行性及動力方面研究,是以批次反應進行實驗。

      在未添加苯胺時,過氧化氫分解的二階反應常數在B1及W1系統中分別為2.11×10-4 1/min‧gB1及6.65×10-4 1/min‧gW1。

      苯胺分解實驗中發現,苯胺的分解與鐵氧化物、過氧化氫劑量、初始pH值、溫度、觸媒表面溶出鐵有關。動力探討方面,Langmuir- Hinshelwood模式來表示,在B1系統中所求得反應常數k值及吸附常數K值分別為9.45μM min-1及8.49×10-4μM-1,而活化能為13.64 kcal/mole;在W1系統中求得的反應常數k值及吸附常數K分別為20.08μM min-1及6.02×10-4μM-1,活化能E=15.49kcal/mole。

      The catalyst in this study is prepared in a fluidized bed reactor. The components coated on the surface were identified as amorphous iron oxides. The feasibility and kinetics discussion about the decomposition of H2O2 and aniline oxidation were studied in a batch reactor.

      When the H2O2 decomposition was in the absence of Aniline, the second order reaction constant in B1 and W1 system were 2.11×10-4 1/min‧gB1 and 6.65×10-4 1/min‧gW1 respectively.

      We found that the initial pH value, temperature, H2O2 and catalyst concentration would effect the degradation of aniline. we used Langmuir- Hinshelwood model to explain the kinetics of reaction. In the B1/Aniline system, the reaction constant k is 9.45μM min-1 and the adsorption constant K is 8.49×10-4μM-1 and the activity energy is 13.64 kcal/mole. In the W1/Aniline system, the reaction constant k is 20.08μM min-1 and the adsorption constant K is 6.02×10-4μM-1 and the activity energy E is 15.49kcal/mole .

    中文摘要........................................I 英文摘要........................................II 誌謝............................................III 總目錄..........................................IV 圖目錄..........................................VII 表目錄..........................................X 第一章 緒論 ...................................1 1-1前言.........................................1 1-2研究目的.....................................2 第二章 文獻回顧.................................4 2-1 Fenton 反應.................................4 2-2鐵氧化物及過氧化氫異相催化反應...............8 2-2-1鐵氧化物/過氧化氫反應......................8 2-2-2鐵氧化物的種類、合成方法及其應用...........10 2-2-3 FBR-Fenton法..............................18 2-3苯胺特性及其處理方法.........................23 2-3-1苯胺的特性.................................23 2-3-2苯胺的處理方法.............................24 第三章 實驗部分.................................27 3-1實驗架構.....................................27 3-2藥品儀器設備.................................28 3-2-1藥品.......................................28 3-2-2 儀器設備..................................28 3-3實驗步驟與分析方法...........................29 3-3-1 實驗步驟..................................29 3-3-3 水樣分析方法..............................35 第四章 結果與討論...............................36 4-1覆膜鐵氧化物之基本特性分析...................36 4-1-1平均粒徑、Bulk density、Dry density .......36 4-1-2覆膜鐵氧化物總鐵量及結晶百分比之分析.......37 4-1-3 BET比表面積及平均孔徑大小之測定...........37 4-1-4 XRD晶相之鑑定.............................38 4-1-5 表面電位分析..............................40 4-1-6掃描式電子顯微鏡(SEM及EDS分析).............43 4-2 背景實驗....................................47 4-2-1 B1吸附苯胺................................47 4-2-2 B1催化過氧化氫分解........................52 4-2-3過氧化氫氧化苯胺...........................60 4-3 B1催化過氧化氫分解苯胺......................62 4-3-1 影響B1催化過氧化氫分解苯胺因素............62 4-3-2反應中總有機碳(TOC)變化情形................70 4-3-3 B1催化過氧化氫分解苯胺之動力探討..........72 4-4反應機制之探討...............................77 4-5 W1催化過氧化氫分解苯胺......................78 4-5-1 W1分解過氧化氫............................78 4-5-2 W1催化過氧化氫氧化苯胺....................82 4-6-3 不同鐵氧化物催化過氧化氫氧化苯胺之比較....89 第五章 結論與建議...............................92 5-1結論.........................................92 5-2建議.........................................93 參考文獻........................................95 附錄............................................100

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