標題: 利用衝擊波管研究O(3P)+C2H5OH高溫的反應速率常數及其反應機制
Experimental Studies of the Rate Coefficients of the Reaction O(3P)+C2H5OH at High Temperatures
作者: 吳稚偉
Chih-Wei Wu
李遠鵬
Yuan-Pern Lee
應用化學系碩博士班
關鍵字: 衝擊波管;高溫;反應速率常數;乙醇;原子共振螢光吸收光譜法;shock-tube;high temperature;Rate Coefficients;ethanol;atomic resonance absorption spectroscopy
公開日期: 2005
摘要: 我們利用活塞型衝擊波管-原子共振吸收光譜系統測量 C2H5OH+O(3P)反應之反應速率常數,並利用模型適解法(modeling fit method)求得此反應在782-1410 K的速率常數。結果為k (T) = (1.10 0.26)×10-15T1.44exp[-(1537 1112)/T] cm3molecule-1s-1所列之誤差為最佳適解的標準差。本次實驗的結果與林明璋研究組所提供的理論計算結果較為一致。而經由數據上的分析,可以發現在我們的反應機制模型中,最主要的二次反應為CH3CHOH+O→CH2O+OH,但是在高溫中,最主要的二次反應則為O + CH3 → CH2O + H。
Rate coefficients of the reaction O(3P) + C2H5OH in the high temperature are determined using a diaphragmless shock tube. O(3P) atoms are generated by photolysis of SO2 with an ArF (193 nm) excimer laser; its concentration is monitored with atomic resonance absorption spectroscopy (ARAS). We model observed temporal profiles of [O] with reactions using a commercial kinetic modeling program FACSIMILE. Rate coefficient of the reactions is varied to yield the best fit for temporal profiles of [O]. We report rate measurements of the title reaction in the temperature range 782-1410K.
URI: http://140.113.39.130/cdrfb3/record/nctu/#GT009325536
http://hdl.handle.net/11536/79253
Appears in Collections:Thesis


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