氫氣是一種理想的乾淨能源，可以以液體或氣體的形式儲存，並被描述為天然氣的長期替代品。利用使用生質乙醇蒸氣重組製氫，可以使反應產生的溫室氣體CO2為一封閉的碳循環。乙醇蒸氣重組涉及多個複雜反應，為了能提高氫氣生產降低副產物的生成，對於觸媒選擇以及反應條件很重要。本研究第一部分以實驗室先前開發用於中溫甲烷蒸氣重組(SRM)的Ni/LaZrCeOx觸媒為基礎，探討此觸媒作用於乙醇蒸氣重組的影響。研究著重於調控Ni觸媒使其在反應條件下仍然保有Ni-NiO界面，並提高Ni的擔載量以此增加Ni與NiO接觸面，16.2% - 53.5% Ni/LZC具有高反應活性與高氫氣產率，反應後16.2% Ni/LZC比較沒有積碳產生，27.9% - 53.5% Ni/LZC隨著含Ni比例提高，積碳量提高。在部分還原的條件(400℃持溫1小時)下，x% Ni/LZC (x=16.2, 36.6, 53.5)還原程度大約30%，因為Ni沒有被完全還原，乙醇蒸氣重組的反應活性明顯較低，但是甲烷的產率相較於完全還原的觸媒低，而且對水參與反應的相對比例也跟著提高，使得反應後的積碳量降低。
第二部分主要分析含浸第二金屬Cu增進Ni/LZC觸媒的氫氣生成與增加反應活性，因為Cu的加入使得Ni/LZC的還原溫度大幅降低，提高在相同溫度下Ni的還原程度。在反應分析上發現，甲烷生成與Ni的還原程度有關，可以降低還原溫度進行調整，並且在低於250℃氫氣產率明顯提升，在350℃下相較於Ni/LZC觸媒，CuNi/LZC的水煤氣反應趨勢更為明顯，對於產氫更有幫助。

Hydrogen is an ideal energy. It can be stored in liquid or gas form.And it has been described as a long-term alternative energy to natural gas. The process of ethanol steam reforming to produce hydrogen can make the greenhouse gas CO2 be a closed carbon cycle. However, ethanol steam reforming involves multiple complex reactions. In order to increase hydrogen production and reduce by-product formation, catalysts' selection and the conditions of the reaction are important. The first part of this study is based on the Ni/LaZrCeOx catalysts which developed by the laboratory for methane steam reforming (SRM) at intermediate temperature. And it is the investigation of these catalysts for ethanol steam reforming. The research focuses on keeping the Ni and NiO interface under the reduction conditions, and increasing the loading of Ni to increase the contact surface between Ni and NiO. 16.2% - 53.5% Ni/LZC has high reaction activity and high hydrogen yield. 16.2% Ni/LZC has almost no carbon deposition after the reaction. In 27.9% - 53.5% Ni/LZC, when Ni loading is increased, the amount of carbon deposition is increased. In the partial reduction (400 °C for 1 hour) of Ni/LZC, the degree of reduction of x% Ni/LZC (x=16.2, 36.6, 53.5) is about 30%. Because Ni is not completely reduced, the activity of ethanol steam reforming is lower than the completely reduced Ni/LZC. However, the yield of methane is lower than the completely reduced catalysts, and so does the carbon deposition after the reaction.
The second part is focused on the impregnation of the second metal Cu to improve the hydrogen generation and the reaction activity of the Ni/LZC catalyst. Because of the addition of Cu, it greatly reduces the reduction temperature of Ni/LZC and improves the reduction degree of Ni at 400℃ for 1 hour. For ESR analysis, it is found that the methane formation is related to the reduction degree of Ni, which can be adjusted by reducing the reduction temperature. The hydrogen yield is significantly improved below 250°C. Compared with Ni/LZC catalyst at 350 °C, CuNi/LZC catalyst is more obvious in water-gas shift reaction. Therefore, it is more helpful for hydrogen production.

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