| 周玉路,林莎莎,夏道宏,项玉芝.NHPI结合磺化酞菁钴催化的乙苯氧化反应[J].分子催化,2011,(6):508-513 |
| NHPI结合磺化酞菁钴催化的乙苯氧化反应 |
| Oxidation of Ethylbenzene Catalyzed by NHPI Combined with Cobalt Sulfonated Phthalocyanine |
| 投稿时间：2011-10-03 修订日期：2011-11-10 |
| DOI： |
| 中文关键词: N-羟基邻苯二甲酰亚胺 磺化酞菁钴 分子氧氧化 乙苯氧化 苯乙酮 |
| 英文关键词:N-Hydroxyphthalimide Cobalt sulfonated phthalocyanine Aerobic oxidation Ethylbenzene oxidation Acetophenone |
| 基金项目:中央高校基本科研业务费专项资金（10CX04024A） |
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| 中文摘要: |
| 探索了一种由N-羟基邻苯二甲酰亚胺（NHPI）和磺化酞菁钴（CoSPc）组成的催化体系催化的将乙苯转化成相应氧化物有效且温和的方法。结果显示控制NHPI和乙苯物质的量比为0.050，NHPI和CoSPc物质的量比为6，反应温度90℃，是该氧化反应的最佳条件，在此条件下，乙苯在氧气中反应10 h，乙苯转化率和苯乙酮选择性分别达到了82.4%和79.1%，延长反应时间有利于提高乙苯的转化率，反应进行到15 h时，乙苯转化率可达到99.0%，在不改变其他反应条件的情况下用空气代替氧气作为氧源，乙苯转化率下降到64.0%。除此之外，NHPI与CoSPc的协同催化作用通过对比实验得到了验证，并对助催化剂CoCl2, Co(AcO)2, 酞菁钴（CoPc）和 CoSPc的催化活性进行了比较，结果显示最有效的助催化剂是CoSPc。 |
| 英文摘要: |
| An efficient and mild method to convert ethylbenzene into the corresponding oxides, catalyzed by a combined catalytic system consisting of N-hydroxyphthalimide(NHPI) and cobalt sulfonated phthalocyanine(CoSPc) was developed. Experimental results showed that the reaction conditions of controlling the molar ratio of NHPI and ethylbenzene to be 0.050, the molar ratio of NHPI and CoSPc to be 6 and reaction temperature to be 90℃ were the most favorable, under which the conversion rate of ethylbenzene and the selectivity of acetophenone reached 82.4% and 79.1% after 10 h of reaction in oxygen atmosphere. The conversion rate increased as prolonging reaction time, it reached 99.0% after 15 h of reaction. However, when air was used instead of oxygen without other conditions changed, the conversion rate dropped to 64.0%. In addition, the synergistic effect of NHPI and CoSPc was approved by comparing experiments, and cocatalytic activities of CoCl2, Co(AcO)2, CoPc and CoSPc were compared also, results indicated that the most efficient cocatalyst was CoSPc. |
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