碩士生: 謝志鑫
畢業年月: 2021年9月
論文名稱: 利用田口法促進Ni/Fe/CaO-Al2O3觸媒 在生質物焦油模型催化蒸汽重整中 的焦油轉化率 / Employing Ni/Fe/CaO-Al2O3 catalyst by Taguchi method on conversion of biochar model steam reforming
中文摘要:
生質氣化除產生合成氣外也會產生焦油，其高黏度與酸性易造成管道堵塞與腐蝕，因此需以催化重整減少焦油並提高合成氣產量。本研究以共沉澱法製備類水滑石的鈣鋁層狀雙氫氧化物（LDH）載體（Ca/Al比1.5、2.0、2.5，鍛燒溫度1037、1137、1237 K），再以濕浸漬法負載3、5、7 wt.%的鎳與鐵；不同沉澱劑與溶劑會影響載體的表面均勻性與晶體尺寸。研究以田口法最佳化合成條件：重焦油轉化的最佳條件為Ca/Al比2.5、1073 K、3 wt.%鐵與7 wt.%鎳；產氫則除鐵負載量改為5 wt.%外相同。結果顯示最佳化的LDH觸媒有助於減少焦油並提升合成氣品質。
英文摘要:
Biomass gasification yields syngas but also tar, whose viscosity and acidity can block pipelines and corrode equipment, so catalytic reforming is needed to reduce tar and raise syngas yield. This thesis synthesizes hydrotalcite-like Ca-Al layered double hydroxide supports by co-precipitation (Ca/Al ratios 1.5, 2.0, 2.5; calcination at 1037, 1137, 1237 K) and loads nickel and iron by wet impregnation at 3, 5, and 7 wt.%. The choice of precipitant and solvent affects surface uniformity and crystal size. The Taguchi method optimizes the synthesis: for heavy tar conversion, Ca/Al 2.5, 1073 K, 3 wt.% Fe, and 7 wt.% Ni; for hydrogen production, the same except 5 wt.% Fe. The results show the potential of optimized LDH catalysts to reduce tar and improve syngas quality.
