Co2O3催化水溶液中SO2氧化苯甲酰胺在碱性介质中的不同效果

F. Hussain, S. Begam, A. Sharma, D. N. Prasad
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引用次数: 3

摘要

我们报道了苯甲酰胺是一个很好的SO2氧化抑制剂,在pH范围7.8-9.4存在的Co2O3。根据观察结果,给出了反应速率规律,并提出了自由基反应机理。- d [S (lV)] / dt = (k1 + k2 [Co2O3]) [S (lV)] / 1 + B(苯甲酰胺)。实验条件为:30≤T℃≤40℃,7.8≤pH≤9.4,1×10 mol/dm≤[S(lV)]≤6 ×10 mol/dm, 0.1 g/L≤[Co2O3]≤0.4g/L, 1×10 mol/dm≤[苯甲酰胺]≤5×10 mol/dm。计算了反应的速率常数和反应的阶数,发现在所有情况下反应都是伪一级反应。讨论了pH值和温度的影响。表观活化能(Ea)为8.7 kJ mol,由Arrhenius方程计算活化能。(k = e)
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Co2O3 Catalyzed Oxidation of SO2 in Aqueous Solution Differing Effect of Benzamide in Alkaline Medium
We report that benzamide is a good inhibitor for SO2 oxidation in the pH range 7.8-9.4 in the presence of Co2O3. Based on the observed results the following rate law is given and a free radical mechanism has been proposed. -d[S(lV)]/dt = (k1+k2[Co2O3]) [S(lV)]/1+B [benzamide]. Experiments were carried out at 30 ≤ T °C ≤ 40, 7.8 ≤ pH ≤ 9.4, 1×10 mol/dm ≤ [S(lV)] ≤ 6 × 10 mol/dm, 0.1 g/L ≤ [Co2O3] ≤ 0.4g/L, 1×10 mol/dm ≤ [benzamide] ≤ 5×10 mol/dm. Rate constants and the order of reaction were calculated and the reaction was found to be pseudo-first order in all cases. The effect of pH and temperature are also discussed. The value of apparent activation (Ea) energy was determined to be 8.7 kJ mol. The activation of energy was calculated by Arrhenius equation. (k = A e).
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