• 作者： Wan, Ben-Zu; Huang, Kuangtse; Yang, Tran-Chinet al.
• 中文摘要： 本研究由水浴高溫高壓方法合成出含釩、鉻、錳、鐵、鈷、鎳、或銅的MAPO-5系列觸煤,這些MAPO-5的物理性質(如BET表面積,X光繞射角度,紫外及可見反射光譜)及催化反應性質(如酸性、去氫反應性、氧化反應性)已鑑定出來。由乙醇轉化反應發現,在623K反應溫度下,VAPO-5,FeAPO-5,及AIPO/sub 4/-5具備去氫的催化性質,乙醇可經由這些觸媒產生乙醛; 和不具備過渡金屬的AIPO/sub 4/-5相比, MAPO-5(除CoAPO-5及FeAPO-5外)具較高的酸性催化性質。由乙烷氧化反應發現,大部分 MAPO-5觸媒皆具備部分氧化性質(產生乙烯)及完全氧化性質(產生二氧化碳)。CrAPO-5是唯一的觸媒,主要具備完全氧化催化性質。研究結果發現,FeAPO-5,CoAPO-5及NiAPO-5催化氧化反應的能力較低; 而VAPO-5,MnAPO-5及 CuAPO-5具備較佳的部分氧化能力,實驗結果顯示,在673到793k反應溫度範圍內及低於10%乙烷轉化率下,乙烯是這些觸媒上的主要產物。
• 英文摘要： MAPO-5 with either V, Cr, Mn, Fe, Co, Ni, or Cu has been synthesized with hydrothermal method. Their physical properties (i.e., BET surface area, X-ray powder diffraction, and UV-Vis diffuse reflectance) and the catalytic properties (i.e., acidity, dehydrogenation, and oxidation) have been characterized. It is found that at 623K, VAPO-5, FeAPO-5 and AIPO/sub 4/-5 have dehydrogenation property in ethanol conversion reaction, and acetaldehyde was observed in the products. Also, it is found that except CoAPO-5. and FeAPO-5, MAPO-5/sub s/ generally have higher catalytic acidity than AIPO/sub 4/-5. The investigation of oxidation properties was carried out by ethane oxidation under air. Both partial oxidation to ethylene and total combustion to carbon dioxide were observed in most of the catalysts. The study shows that CrAPO-5 mainly exhibits total combustion property; and FeAPO-5 CoAPO-5 and NiAPO-5 have low oxidation activity. Furthermore, VAPO-5, MnAPO-5 and CuAPO-5 have good catalytic activity for ethane oxidation. Partial oxidation product-ethylene is the main product on these catalysts at ethane conversion below 10% and reaction temperature between 673 and 793 K.
• 中文關鍵字： MAPO-5; 磷酸鋁; 乙醇轉換; 乙烷含氧脫氫作用; 紫外及可見反射光譜
• 英文關鍵字： Mapo-5; Aluminophosphate; Ethanol Conversion; Ethane Oxydehydro-Genation; Uv-Vis Reflectance