| 研究生: |
陳尚瑋 Chen, Shang-Wei |
|---|---|
| 論文名稱: |
1氫-1,2,3-三氮唑在銅(100)和氧/銅(100)表面上的熱反應研究 Thermal Chemistry of 1H-1,2,3-Triazole on Cu(100) and O/Cu(100) Surfaces |
| 指導教授: |
林榮良
Lin, Jong-Liang |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 化學系 Department of Chemistry |
| 論文出版年: | 2016 |
| 畢業學年度: | 104 |
| 語文別: | 中文 |
| 論文頁數: | 87 |
| 中文關鍵詞: | 超高真空系統 、程式控溫反應/脫附(TPR/D) 、反射式紅外吸收光譜(RAIRS) 、X-光光電子能譜(XPS) 、近緣X光吸收細微結構光譜(NEXAFS) 、銅(100) 、1氫-1,2,3-三氮唑 |
| 外文關鍵詞: | 1H-1,2,3-triazole, temperature-programmed reaction/desorption (TPR/D), X-ray photoelectron spectroscopy (XPS), near edge X-ray absorption fine structure (NEXAFS), Cu(100) |
| 相關次數: | 點閱:169 下載:1 |
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本篇論文是在超高真空系統中(UHV),利用程式控溫反應/脫附(TPR/D)、反射式紅外吸收光譜(RAIRS)、X-光光電子能譜(XPS)、近緣X光吸收細微結構光譜(NEXAFS)等表面分析技術研究1H-1,2,3-triazole在銅(100)表面及氧/銅(100)表面的熱反應。
1H-1,2,3-triazole/Cu(100)在120 K時會以2N、3N鍵結於Cu(100)表面,加熱至130~230 K會先斷N-H鍵偶合成H2脫附,並形成1,2,3-triazole的中間物,表面溫度大於500 K時中間物會斷N-N、C-N、C-C、C-H鍵分解成H2、N2、HCN、CH3CN等產物脫附。
1H-1,2,3-triazole/O/Cu(100)在120 K時也是以2N、3N鍵結於Cu(100)表面,吸附於表面上的氧原子會抓取N-H的氫原子形成OH(a)並在200~240 K偶合成H¬2O脫附,升溫至460 K左右中間物會與氧原子反應形成H2O、CO2、CO、N2、H2等產物,溫度大於500 K時中間物再分解成N2、HCN、CH3CN、H2、CO2等產物脫附。
Thermal chemistry of 1H-1,2,3-triazole (C2H3N3) on Cu(100), was studied with temperature-programmed reaction/desorption (TPR/D), reflection-absorption infrared spectroscopy, X-ray photoelectron spectroscopy (XPS) and near edge X-Ray absorption fine structure (NEXAFS). The TPR/D shows that H2 evolves between 120~230 K, due to 1N-H bond dissociation of the triazole, forming a 1,2,3-triazole intermediate as well. Upon heating to a temperature higher than 500 K, the 1,2,3-triazole begins to decompose into H2, N2, HCN and CH3CN. For 1H-1,2,3-triazole on the oxygen-precovered surface (O/Cu(100)), H2O desorbs between 200K and 240 K resulting from the coupling of surface OH groups, which are generated from reaction of O(a) and the triazole molecule. The 1,2,3-triazole intermediate decomposes to form H2, N2, CO2, and H2O at ~470 K. At ~550 K, H2, N2, HCN, CH3CN and CO2 are also detected.
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