| 超临界二氧化碳中的甲苯选择性氧化反应 |
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| 引用本文： | 杨美健,张广信,陶敏莉.超临界二氧化碳中的甲苯选择性氧化反应[J].化学工业与工程,2010,27(5):424-428. |
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| 作者姓名： | 杨美健 张广信 陶敏莉 |
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| 作者单位： | 1. 天津大学石油化工技术开发中心,绿色合成与转化教育部重点实验室,天津,300072
2. 巴斯夫吉化新戊二醇有限公司,吉林,132002 |
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| 摘 要： | 考察了甲苯选择性氧化反应中反应物及产物在超临界二氧化碳中的溶解性质。结果表明,甲苯在超临界二氧化碳中的溶解度较大,在反应条件下能与二氧化碳形成均相;苯甲醇、苯甲醛和苯甲酸在超临界二氧化碳中的溶解度随着物质极性的增强而降低。利用不同产物的溶解性差异,可实现超临界二氧化碳中甲苯的选择性氧化。同时考察了超临界二氧化碳中甲苯选择性氧化反应过程中,反应时间、反应压力、反应温度以及n(甲苯)/n(氧气)对反应选择性的影响。
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| 关 键 词： | 超临界二氧化碳 甲苯 氧化反应 苯甲醛 |
Reaction of Selective Oxidation of Toluene in Supercritical Carbon Dioxide |
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| YANG Mei-jian,ZHANG Guang-xin,TAO Min-li.Reaction of Selective Oxidation of Toluene in Supercritical Carbon Dioxide[J].Chemical Industry and Engineering,2010,27(5):424-428. |
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| Authors: | YANG Mei-jian ZHANG Guang-xin TAO Min-li |
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| Affiliation: | 1.Key Laboratory of Green Synthesis Conversion,R ＆ D Center for Petrochemical Technology,Tianjin University,Tianjin 300072,China;2.BASF JCIC Neopentyl Glycol Company Ltd.,Jilin 132002,China) |
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| Abstract: | The solubility of reactants and products were studied in scCO2,and the results showed that the toluene had a high solubility in supercritical carbon dioxide,and toluene-CO2 system could form single phase under the reaction condition.The solubility of benzyl alcohol,benzaldehyde,and benzoic acid in supercritical carbon dioxide reduced with the polarity enhanced.The synthesis of benzaldehyde could be realized in higher selectivity due to the different solubility of the oxidation products.Furthermore,the effect of reaction time,pressure,temperature,and the molar ratio of toluene and oxygen on the reaction selectivity were also studied. |
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| Keywords: | supercritical carbon dioxide toluene oxidation reaction benzaldehyde |
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