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頁籤選單縮合
題名 | Hydrogenation of Endo-Endo Dimer of Norbornadiene Over Pd Catalysts=Norbornadiene於鈀觸媒上之氫化反應 |
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作者 | 陳郁文; 彭聖章; 葉耀宗; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷期 | 30:1 1999.01[民88.01] |
頁次 | 頁87-92 |
分類號 | 468.8 |
關鍵詞 | 鈀觸媒; 氫化反應; Endo-endo-dihydro-di(norbornadiene); Hydrogenation; Jet propulsion; Palladium; High energy fuel; |
語文 | 英文(English) |
中文摘要 | 本研究係探討Norbornadiene 於Pd/Al₂O₃觸媒上之氫化反應,研究係以批次淤漿反應器進行。蛋殼型觸媒之活性遠比均勻型觸媒活性高,這是因為均勻型觸媒內部的金屬在質傳控制時未被利用到的緣故。以蛋殼型觸媒作為反應動力學研究對象,反應速率對norbornadiene的濃度係零次反應,對空氣分壓為一次反應。反應速率式為- r□ = 2.525 ×10²×exp(-4380/T) .P □₂/(mol/sec.g catal.),反應符合 Horiuti-Polanyi反應模式,氫係解離吸附於金屬上,norbornadiene係強吸附在金屬上,而表面反應為速率決定步驟。 |
英文摘要 | The hydrogenation of endo-endo dimer of Norbornadiene using Pd/Al₂O₃ catalysts have been studied in a batchwise slurry reactor. The egg-shell catalyst was much more active than the uniform one. This can be attributed to the incomplete utilization of active sites near the center of the catalyst sample with uniform metal distribution resulting from diffusional hindrance. The kinetic studies of the egg-shell catalyst showed that the reaction rate is zeroth order with respect to norbornadiene and first order to partial pressure of hydrogen. The rate equation can be expressed as, - r□ = 2.525 ×10²×exp(-4380/T) .P □₂/(mol/sec.g catal.). The reaction follows the Horiuti-Polanyi mechanism. Hydrogen is dissociatively adsorbed on metal; NN is strongly adsorbed on metal and the rate-limiting step is surface reaction. |
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