摘要
以苯甲酸為原料，銅鹽(cupric benzoate)為觸媒，進行連續式液相空氣氧化，產生苯酚及CO_2的反應，加以探討。故以選擇反應溫度、促進劑用量、觸媒濃度、空氣流速及水蒸氣流量為重要因素，按照統計實驗法的步驟，求出這些因素對苯酚及副反應生成焦油(tar)的關係。然後用廻歸分析法分析實驗結果，並在計算預測最佳反應條件。所得結果如不：(1)由廻歸分析結果所示，各因素及其相互作用，對主反應及副作用的影響，可以數據明顯表明之(2)最佳反應條件預測結果，為反應溫度242℃，促進劑用量0.085分子百分比(mole fraction)，觸媒濃度0.052分子百分比，空氣流速1.5 l/min、水蒸氣流量1.0 g/min之條件下，可得苯酚產量0.7722 mole/hr，及焦油生成1.36重量%，(3)預測最佳反應條件，再經實驗後求出之實驗值為苯酚產量0.7708 mole/hr，焦油生成為1.16重量%。以上結果顯示，實驗值與預測值頗為符合。不僅證明計算預測結果的正確性，而且從理論產率90%提高至95%以上。
關鍵字
無資料並列摘要
Benzoic acid is oxidized with air to phenol by a liquid-phase semi- continuous process, employing cupric benzoate as a catalyst. The effects of react ion temperature, amounts of catalyst and promoter, and flow rates of air and steam are studied. The experimental result s are analyzed by regression analysis method and used to predict the optimum reaction conditions. The following are the conclusions. 1. The optimum reaction conditions predicted by regression analysis method are: a. The reaction temperature will be 242℃. b. The mole fraction of catalyst and promoter in the feed liquid will be 0.052 and 0.0855, respectively. c. The flow rates' of air and steam will be 1.5 l/min and 1.0 g/min, respectively. d. The production rates of phenol and tar will be 0.7722 mole/hr and 1.36 wt% of reactor liquid, respectively. 2. The above predicted values have been proved by experiments, in which production rates of phenol and tar are found as 0.7708 mole/hr and 1.16 wt% of reactor liquid, respectively, quite close to the predicted values. 3. The regression analysis method has been proved as a very keen tool which incidentally succeeds to indicate the way to improve the 90% yield of preliminary experiments to 95% yield of final try-outs.
並列關鍵字
無資料延伸閱讀
- 何昭明（1967）。芳香族酸類、醛類、醇類及酚類之氣體層析法的研究。化學，(56年4)，113-117。https://doi.org/10.6623/chem.1967022
- 何子萬、俞定遠、林新宅（1987）。芳香族胺與溴化銅擔體試劑之溴化反應。化學，45(1)，10-14。https://doi.org/10.6623/chem.1987002
- Chren, S. (2000). 芳香族雙醚烯類化合物的臭氧化反應與其化學發光之機制研究 [master's thesis, National Taiwan Normal University]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0021-1804200716013857
- Mansurov, A., Z., Mofa, N., N., Sadykov, S., B., Shabanova, & Sh, T. (2013). Activation of the Technological Combustion Process of Oxide Systems by Different Modifying Additives. Advances in Ceramic Science and Engineering, 2(3), 106-112. https://www.airitilibrary.com/Article/Detail?DocID=P20150603001-201308-201509080013-201509080013-106-112
- 蔡尚緯（2021）。Studies on fertile organic substances for the amendment of a strong acidic soil〔碩士論文，國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346/NPUST202100148