第五章 結論與建議
5.2 建議
1.本研究所利用的 Aero-EISA 方法製備金屬觸媒是以對於吸附丙酮效 率最佳之 Surf/Si 莫耳比例 0.18 為基礎配方,再搭配不同的金屬種 類與濃度進行比較,因此建議對於製程配方參數與減低配方的化學 材料費用同時進行後續的探討研究,如研究選用以較便宜甚至是光 電廠廢棄物的矽基質取代原配方中的TEOS,以及以價格便宜的另 類介面活性劑(如 P123)取代原配方中的 CTAB,以期達到催化 VOCs 的最佳效率與價格最便宜的雙重目標。
2.實驗所選用的 VOCs 為丙酮分子,其他如芳香族類的甲苯(toluene)、
含氯化合物等均是重要的VOCs 污染物種,此外還可再針對氧化還 原雙功能(Bifunction)的污染物進行去除探討,如同時去除丙酮與氮 氧化物的實驗,將更可以提升金屬觸媒的使用效率,因此建議未來 可選用不同種類與型式的空氣污染物再進行研究比較,以獲得有關 反應物的影響參數。
3.本研究所設計的 Aero-EISA 製程是以震盪噴霧的原理進行氣膠的合 成,雖然與水熱法等製備金屬觸媒的方式相比已經是簡單快速有效 的製程,但是對於製程更趨於簡單化的設計提升部分,還可以選用 工業界製造粉體廣為被選用的噴霧乾燥器來嘗試進行 Metal-MSPs 的合成,以期朝向後續具有量產的潛力開發市場。
4.本研究以 Aero-EISA 一步合成之 Ce/Al-MSPs 金屬觸媒具有低溫有 效催化丙酮之效果,主要是因為Al 金屬之吸附活性與 Ce 金屬的催 化活性所形成的協合效應(synergetic effect)所致,然而對於其中的 吸附與催化反應卻未進行進一步之分別探討,因此建議未來可選用 純氮氣或空氣各別進行 Ce/Al-MSPs 金屬觸媒吸附或催化丙酮的實 驗,或以求得動力方程式等方法來進行吸附或催化反應的進一步研 究討論。
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