- 作者: 施鑑洲
- 作者服務機構: 經濟部聯合工業研究所
- 中文摘要: 將各種金屬氧化物觸媒加以適當處理後,分別在所定條件下作正丁烯氧化脫氫,而探究其表面性質與活性間之相互關係。 觸媒之表面積及細孔總容積均隨焙燒溫度之升高而顯著減少,並與活性有密切關係,組成相同之Bi2O3-MoO3- SiO2 觸媒或Bi2O3-WO3-SiO2觸媒,其表面積或細孔總容積增加,丁二烯選擇率及其收率均有增大之趨勢,但Bi2O3-MoO3-A12O3觸媒卻呈相反現象。 以Bi2O3-MoO3- SiO2或Bi2O3-WO3-SiO2媒在400oC焙燒,或以Bi2O3-MoO3-A12O3觸媒於800oC焙燒,可改變其表面性質並對正丁烯氧化悅氫活性之增大有極大效果,丁二烯選擇率最高可達86.5%,丁二烯之收率可達58.7%。
- 英文摘要: The oxidative dehydrogenation of n-butenes to butadiene over Bi2O3-MoO3-SiO2Bi2O3-WO3-SiO2 and Bi2O3-MoO3-Al2O3 Catalysts was undertaken to investigate thecorrelation between their surface properties and activities. The activities of these catalysts have a close relation to their surface properties.The surface area and the total pore volume decrease apparently with increasingCalcination temperature, and the selectivity to butadiene or the yield of butadieneincreases with increasing surface area or total pore volume of the same-composedBi2O3-MoO3-SiO2 or Bi2O3-WO3-SiO2 Catalysts. But the counter phenomenon is foundin the case where Bi2O3-MoO3-Al2O3 Catalysts are used. If Bi2O3-MoO3-SiO2 or Bi2O3-WoO3-SiO2 Catalysts Calcined at 400oC, and Bi203-MoO3-Al2O3 Catalysts Calcined at 800oC are very effective to increase the activityfor oxidative dehydrogenation of n-butenes. The optimum slectivity to butadiene is86.5%, while the butadiene yield is 58.7%.
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