標題: | 利用雷射光解—雷射誘發螢光技術研究CN + NCO → NCN + CO之動力學 Kinetic Study of the Reaction CN + NCO → NCN + CO Using Laser Photolysis—Laser Induced Fluorescence Technique |
作者: | 曾翔暘 Shiang Yang Tzeng 王念夏 Niann S. Wang 應用化學系碩博士班 |
關鍵字: | 雷射光解—雷射誘發螢光;Laser Photolysis—Laser Induced Fluorescence Technique |
公開日期: | 2004 |
摘要: | 摘要
本研究利用雷射光解(laser photolysis) /雷射誘發螢光(laser-induced fluorescence)技術配合電腦模擬程式Facsimile在254,273,298,353 K及123 – 566 Torr之He中測量CN + NCO→ NCN + CO反應之速率常數值。結果顯示此反應之速率常數值在此壓力範圍內不隨壓力改變,但有負溫度效應,其速率常數可表示為:
k = (1.61 ± 1.16) × 10-11 exp[(342 ± 45)╱T] cm3 molecule-1 s-1
實驗之結果可配合理論計算,來驗證此一反應路徑之各個中間物和過渡態,並檢驗速率常數之正確性。 Abstract Absolute rate constants for the reaction CN + NCO → NCN + CO were determined at 254,273,298,and 353 K in 123 to 566 torr of He by means of the laser photolysis / laser induced fluorescence technique coupled with computer simulations。 We found that the rate constants are pressure – independent and temperature-dependent。The rate constant can be expressed by : k = (1.61 ± 1.16) × 10-11 exp[(342 ± 45)╱T] cm3 molecule-1 s-1 Our results will compared with the results of a quantum mechanical calculation on the intermediates and transition states in the reaction paths,and a RRKM calculation of the rate constants of individual reaction path。 |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009125557 http://hdl.handle.net/11536/55146 |
顯示於類別: | 畢業論文 |