臺灣博碩士論文加值系統

本研究以丙烷作為低溫電漿重組產氫氣的原料，探討不同射頻電源輸出功率、N2/LPG進氣比例等參數對丙烷轉換率(〖Conv.〗_(〖C_3 H〗_8 ))及氫氣生成體積百分比(V_(H_2 )%)之影響。利用氮氣電漿之高能量電子打斷丙烷之鍵結，經實驗顯示，使用導電碳布(Conductive carbon cloth)作為觸媒情況下，RF輸入功率150 W、N2/LPG=3/27時為最佳參數，丙烷轉換率達70%且氫氣產率45%，並針對此電漿環境做溫度量測，電漿環境溫度為125℃。為改善於重組反應中常因殘碳導致觸媒失活的現象，進一步利用發泡鎳(Nickel foam)及鋼絲絨(Stainless steel wool)等三維結構材料作為觸媒，添加鋼絲絨於3.5 h之長時間電漿重組反應，丙烷轉換率皆穩定維持於70%以上，氫氣生成體積百分比也維持於45%左右，實驗結果顯示，利用三維結構觸媒可增加重組反應之穩定性，減少殘碳對重組反應之影響，且於3.5小時之穩定性測試中，電漿環境溫度維持於150℃左右，相較於傳統高溫裂解及蒸汽重組法生成氫氣，本系統為低溫產氫製程。

Propane reforming has been carried out by low temperature radio frequency (RF) plasma. The plasma was composed of mixture gas with different N2/LPG flow ratios. In order to obtain optimal condition, several parameters, including RF powers and ratio of N2/LPG flow rates were tested to achieve the maximal yield of hydrogen and conversion of propane. The results indicate that 150 W of RF power under N2/LPG flow rate of 3/27 showed 70% methane conversion rate and 45% hydrogen production yield with conductive carbon cloth as a catalyst. Temperature measuring of radio frequency plasma environment which indicates 125oC with 150 W. Adding three-dimensional structured catalysts assisted plasma reforming can enhance reforming stability. The long term reforming experiment confirmed that the steel wool could maintain the propane conversion about 70% and the hydrogen production yield was maintained more than 45%. The results show that adding three-dimensional structured catalysts assisted plasma reforming can reduce the impact of residual carbon.

摘要 II
Abstract III
總目錄 IV
圖目錄 VI
表目錄 VIII
第一章 緒論 1
1-1前言 1
1-2研究動機 3
第二章 文獻回顧 5
2-1 氫能源 5
2-1-1 氫能源簡介 5
2-1-2 氫氣生產技術 7
2-2 電漿技術簡介 11
2-2-1 電漿基本原理 11
2-2-2 應用於重組反應之電漿類型 18
2-3 低碳烴類重組 24
2-3-1電漿裂解甲烷產氫 24
2-3-2電漿裂解丙烷產氫 25
2-3-3觸媒輔助電漿重組產氫 28
2-3-4 三維結構觸媒 30
第三章 實驗方法 32
3-1 實驗設計與方法 32
3-1-1 實驗材料 32
3-1-2 實驗設備 33
3-1-3 實驗流程 34
3-2 電漿重組反應 37
3-2-1 丙烷電漿重組反應 37
3-2-2三維結構觸媒輔助電漿重組反應 38
3-2-3 實驗參數代碼 40
3-3 分析儀器 41
3-3-1 氣相層析儀(GC-TCD) 41
3-3-2 電漿重組系統之環境溫度量測 44
3-3-3 冷場發射式掃描電子顯微鏡(FESEM) 45
3-3-4高解析比表面積分析儀(BET) 46
3-4-5介面接觸阻抗量測(ICR) 54
3-3-6拉曼光譜儀(Raman) 55
第四章 結果與討論 58
4-1 丙烷電漿重組 58
4-1-1 N2/LPG進氣比例 59
4-1-2射頻功率 62
4-1-3 N2/LPG總進氣量 65
4-1-4丙烷電漿環境溫度量測 66
4-1-5殘碳分析 67
4-2三維結構觸媒之材料分析 69
4-2-1 冷場發射式電子顯微鏡 69
4-2-2 拉曼光譜 70
4-2-3高解析比表面積及孔徑分析 72
4-2-4介面接觸阻抗量測 74
4-3三維結構觸媒輔助電漿重組 75
4-3-1 觸媒對電漿重組之影響 75
4-3-2 電漿環境溫度量測 78
4-3-3穩定性測試 80
4-3-4 殘碳分析 83
結論 86
參考文獻 87

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