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題 名 | Kinetic Behavior of Amyl Acetate Synthesis Catalyzed by Acidic Cation Exchange Resin=酸性陽離子交換樹脂催化乙酸戊酯合成反應的動力行為 |
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作 者 | 李明哲; 吳弦聰; 康辰暉; 林河木; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 30:2 1999.03[民88.03] |
頁 次 | 頁117-122 |
分類號 | 460.02 |
關鍵詞 | 性酸陽離子交換樹脂; 催化; 乙酸; 正戊醇; 非均相酯化反應; Kinetics; Esterification; Amyl acetate; Amberlyst 15; |
語 文 | 英文(English) |
中文摘要 | 本研究探討以酸性陽離子交換樹脂(Amberlyst 15)為觸媒之乙酸與正戊醇非均 相酯化反應在 303.15 K 至 353.15 K 間的動力行為。實驗所得的動力數據以一擬均相模式 關聯,並訂定該酯化反應在各溫度下的 " 視 " 反應速率常數。由此得知正向與逆向反應的 活化能分別為 51.74 kJ . mol □與 45.28 kJ . mol □。實驗結果顯示乙酸的平衡轉化 率與 " 視 " 平衡常數均隨溫度的昇高而增大,因而推斷該酯化反應為一吸熱反應。 |
英文摘要 | The kinetic behavior of heterogeneous esterification of acetic acid with amyl alcohol was investigated at temperatures from 303.15 K to 353.15 K over an acidic cation exchange resin catalyst, Amberlyst 15. The kinetic data were correlated by a quasi-homogeneous model with which the apparent rate constants at each reaction temperature were determined. The activation energies of the forward and the backward reactions were found to be 51.74 kJ . mol □ and 45.28 kJ . mol □, respectively. As evidenced from experimental results, the equilibrium conversion of acetic acid and the apparent equilibrium constant increase with increasing temperature, implying that the esterification is endothermic. |
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