• 作者： Wan, Ben-Zu; Wu, Jyh-Jun
• 中文摘要： 由熱力學平衡研究丙烷轉化反應得知,大約在反應溫度773K及1大氣壓的平衡狀況下最適合產生苯類產物; 由於低的平衡常數,丙烷去氫及丙烯或乙烯聚合可能是從丙烷產生苯類的反應速率限制步驟。以HZSM-5為觸媒研究丙烷轉化反應得知,丙烷首先是在HZSM-5上裂解為乙烯及甲烷,乙烯隨後聚合成高碳產物,再結環成苯類。加了鋅,銅,鐵或鈷的HZSM-5觸媒能多少變換丙烷反應的起始步驟,加了鋅的HZSM-5能使丙烷首先去氫成丙烯而沒有明顯的裂解現象,而在鈷,銅及鐵HZSM-5上,去氫及裂解均會發生。研究中並發現銅,鎳,鐵(尤其是鎳)在 HZSM-5上能促使氫解反應,而產生較多的苯類及甲烷產物。
• 英文摘要： Propane conversion was studied by thermodynamic equilibrium and by reactions in HZSM-5 and transition metal HZSM-5. It was found from the equilibrium study that the production of the aromatics was favored under reaction temperature about 773 K and low pressure about one atmosphere. Dehydrogenation of propane to propylene and oligomerization of low molecular olefin may be the reaction rate limiting steps. The results of propane reactions on HZSM-5 suggest that propane was cracked to ethylene and methane first, ethylene was then oligomerized to the higher hydrocarbons and cyclized to the aromatics subsequently. The addition of either Zn, Cu, Fe, or Co into HZSM-5 would change the propane conversion path more or less. It was found that propane was dehydrogenated to propylene without apparent cracking phenomena, then oligomerized and cyclized subsequently in Zn HZSM-5. Both cracking and dehydrogenation occurred in either Co, Cu, or Fe HZSM-5. Also, Cu, Ni and Fe HZSM-5(especially Ni HZSM-5) have apparent hydrogenolysis catalytic property.
• 中文關鍵字： 丙烷; 轉化; 過渡金屬HZSM-5
• 英文關鍵字： Propane; Conversion; Hzsm-5; Transition Metal Hzsom-5