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| 題 名 | 以三相催化技術合成正丁基苯基醚的研究(III)--續流攪拌式反應器的可行性探討=Synthesis of n-Butyl Phenyl Ether by Triphase Catalysis (III)--an Evaluation on Using a Continuous-Flow Stirred Vessel Reactor |
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| 作 者 | 蕭旭欽; | 書刊名 | 東方學報 |
| 卷 期 | 30 2009.12[民98.12] |
| 頁 次 | 頁40-57 |
| 分類號 | 460.02 |
| 關鍵詞 | 三相催化; 續流攪拌式反應器; 溴正丁烷; 酚化鈉; 正丁基苯基醚; Triphase catalysis; CFSVR; n-butyl bromide; Sodium phenolate; n-butyl phenyl ether; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 參照本研究第二部份批式反應器所獲得的最適反應條件,以自行設計的續流式反應器(CFSVR)進行三相催化反應合成正丁基苯基醚,分別就攪拌速率、觸媒活性是否衰退、觸媒用量、油水相反應物濃度、油水相進出料流量、溫度等變因加以探討。由實驗結果得知:當攪拌速率超過400rpm後,溴正丁烷轉化率即不受其影響,且觸媒用量及反應溫度的增加皆有助於反應速率的提高,但溴正丁烷轉化率隨著油、水兩相進出料流量的增加而下降。另外,隨著油相反應物溴正丁烷濃度的增加,起初溴正丁烷轉化率維持一定值,然後呈現下降的趨勢;但隨著水相反應物酚化鈉濃度的增加,溴正丁烷轉化率則呈現先增後減的趨勢。至於在三相觸媒穩定性方面,經過長時間進行醚化反應的連續操作,觸媒活性有稍微衰退的現象發生。 |
| 英文摘要 | Synthesizing n-butyl phenyl ether by triphase catalysis was carried out in a continuous-flow stirred vessel reactor (CFSVR) under the optimal conditions determined by referring the results obtained from a batch reactor. The effects of variables, including agitation speed, catalyst deactivation, the amount of catalyst, concentrations of reactants in organic and aqueous phases, the volumetric flow rate of organic and aqueous phases, and reaction temperature, on the reaction were investigated. The experimental results reveal that the conversion of n-butyl bromide maintains a constant value when the agitation speed is over 400 rpm. The reaction rate increases with the increasing amount of catalyst and temperature. However, the conversion of n-butyl bromide decreases with the increase of the volumetric flow rate of the organic and aqueous phases. With the increase of the reactant concentration (n-butyl bromide) in the organic phase, the conversion of n-butyl bromide will at first maintain a fixed value and then decreases. On the other hand, with the increase of the reactant concentration (sodium phenolate) in the aqueous phase, the conversion of n-butyl bromide will increase first and then decreases. As to the stability, the triphase catalyst slightly loses its activity during a long-time operation. |
本系統中英文摘要資訊取自各篇刊載內容。