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
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