氫能是新興能源中對環境影響程度最低的乾淨能源，現今氫氣的生成主要來自於甲烷蒸氣重組反應(SRM)，為降低甲烷蒸氣重組反應產物的分離與純化成本，吸附助效甲烷蒸氣重組反應(SESRM)在近年來成為備受注目的開發技術之一。本研究探討Ni/LaCeZrOx觸媒的放量製備(5g批量)步驟，在測試與原製備批量觸媒有相似觸媒晶相、孔洞結構與SRM活性後，將5g批量合成Ni/LZC觸媒，混合CaO吸附劑後，進行500和600℃持溫SESRM反應。藉由計算修正後，在CO2破出前，600℃反應甲烷轉化率可突破平衡轉化率限制達到93%，且H2產物分布也高達99.5%，在CO2破出後，600℃反應甲烷轉化率仍高於為含吸附劑觸媒的反應結果，推測Ni/LZC觸媒受到CaO吸附劑修飾以至於有更好的反應活性，藉由XRD與粒徑分析發現Ni-Phase粒徑縮小，TPR分析觀察到還原峰偏移的現象，利用含浸法合成CaO-Ni/LZC觸媒後進行XRD與TPR分析，同樣觀察到CaO-Ni/LZC觸媒與含吸附劑觸媒有相似的分析結果，因此合理推測CaO吸附劑對Ni/LZC有修飾的效果。CaO-Ni/LZC觸媒的SRM結果中發現，轉化率受平衡轉化率限制，而未觀察到與含吸附劑觸媒相同的修飾後反應結果，但在WGS實驗中可以看出CaO-Ni/LZC觸媒與含吸附劑觸媒在CO2破出後，Ca對Ni/LZC觸媒的修飾效果。

Sorption enhanced steam reforming of methane (SESRM) process is a technique which combines steam reforming process and CO2 separation process. It has the advantages of producing high purity H2 and CO2, and it can also be applied to break thermodynamics limitation. The CO2 sorbent is mixed with the SRM catalyst and sequential operation of H2 production by SRM with CO2 absorption and then CO2 desorption for sorbent regeneration is usually required. In this study, CaO is used as the CO2 sorbent to mix with Ni/La-Ce-Zr oxide catalyst for methane steam reforming at 500-600℃. Detailed analysis of SESRM process indicates that the methane conversion can break the equilibrium limitation and reaches 93% at 600℃ in the sorbent absorption (pre-breakthrough) period, and the H2 concentration is nearly 100%. After the CO2 breakthrough, the methane conversion is found still higher than the SRM without sorbent. This can be partly attributed to that sorbent still maintains ability to partially capture CO2 after the breakthrough and partly to that the catalyst activity is enhanced by CaO. The latter is supported by the negligible coke deposition and a corrected data analysis indicating an enhanced methane conversion. Also XRD results show that the Ni-phase particle size become smaller after the addition of CaO and TPR reduction peak shift , presumably due to Ca influence.

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