【學術亮點】Sub-boiling hydrothermally synthesized 2D Ni-catalyst supported on KCC-1 for a sustainable dry reforming of methane: 1000h-longevity reaction and operando insight on its activity restoration under N2-blanket
Ecological Agriculture: Optimization and Validation of Soil Carbon Sequestration Prediction Models【Department of Soil Environmental Sciences / Liu, Yu-Ting / Distinguished Professor】
生態農業：土壤碳蓄存之預測模型優化及驗證【土壤環境科學系/劉雨庭特聘教授】
| 論文篇名 | 英文：Sub-boiling hydrothermally synthesized 2D Ni-catalyst supported on KCC-1 for a sustainable dry reforming of methane: 1000h-longevity reaction and operando insight on its activity restoration under N2-blanket 中文：亞臨界水熱法合成之二維鎳催化劑負載於 KCC-1：應用於永續甲烷乾重組的 1000 小時長壽命反應，並揭示其在氮氣保護下活性恢復的原位機制 |
| 期刊名稱 | International Journal of Hydrogen Energy |
| 發表年份,卷數,起迄頁數 | 2025, 127, 813-826 |
| 作者 | Chen, Ming-Yang1; Liu, Yu-Ting(劉雨庭) 1; Hsu, Liang-Ching1; Cheng, Yoke Wang; Ng, Kim Hoong* |
| DOI | 10.1016/j.ijhydene.2025.04.051 |
| 中文摘要 | 鎳催化劑在甲烷乾重組反應（DRM）中常因易受碳沉積與金屬燒結影響而備受質疑。針對此問題，本研究提出以 90°C 水熱法合成並將二維鎳催化劑負載於 KCC-1。其所形成的氣體通道有效實現 Ni 活性位點的空間分離與雙面可及性，顯著提升催化效率。最佳組成（6 wt% Ni）展現出高達 11.43% 的表面/體相 Ni 比例，即使在不同操作干擾下，仍能維持超過 90% 的 CO₂ 與 CH₄ 轉化率。耐久性測試顯示，連續進行 11 天 DRM 僅出現約 10% 的活性衰退，且在氮氣保護下可於數小時內恢復，其機制歸因於 KCC-1 載體的晶格氧協助修復作用。透過合理規劃的氮氣再生程序，本研究成功驗證了超過 1000 小時的 DRM 穩定運行。整體而言，本研究開發的鎳催化劑不僅採用節能的 90°C 水熱製程，亦展現出卓越的耐久性與可再生性，為 DRM 提供了高效且可持續的催化解決方案。 |
| 英文摘要 | Ni-catalyst is criticked for its vulnerability towards both carbon deposition and metal sintering in dry reforming of methane (DRM). As a countermeasure, a 90°C-hydrothermal synthesis was proposed herein to deposit 2D Ni-catalyst onto KCC-1, where the co-induced gas channels enable spatial separation and improved reachability of Ni-sites at both front and back of catalyst. Optimum catalyst with 6 wt% Ni manifested high surface-to-bulk Ni of 11.43 %, thereby promising extremely high CO2 and CH4 conversions (>90 %) even with different operational interferences introduced. Longevity investigation indicates only 10 % catalytic deactivation was observed after 11 days continuous DRM. Such lost activity can be interestingly restored in hours under N2-blanket, mechanistically assisted by the lattice-O of KCC-1 support. Therefore, with a properly-planned N2-regeneration program, DRM exceeding 1000h was successfully demonstrated herein. Overall, this study offers highly commensurable Ni-catalyst prepared from an energy-saving 90°C-hydrothermal process, featuring excellent resilience and facile regeneration for DRM. |
| 發表成果與本中心研究主題相關性 | 本研究所開發之鎳催化劑兼具高效能、低能耗、長壽命與易再生的特質，與永續農業創新發展中心推動低碳技術、循環農業與能源轉型的願景高度契合。透過甲烷乾重組反應（DRM），該催化劑能將甲烷與二氧化碳兩種主要溫室氣體轉化為合成氣（syngas），不僅有效減少碳排放，亦可作為下游化工與能源的重要原料，展現對農業廢棄物甲烷資源化與農業碳管理的直接應用價值。同時，本研究成果展現出低能耗製程與高耐久性催化技術，為農業提供具體的碳循環與資源再利用策略，並推動畜牧沼氣及農業廢氣的高值化利用，進一步落實農業減碳與循環經濟，強化中心在永續農業與能源催化領域的國際影響力。 |
