| 钛酸酯催化碳酸二甲酯与苯酚酯交换反应的研究 |
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| 引用本文： | 高俊杰,陆愚,等.钛酸酯催化碳酸二甲酯与苯酚酯交换反应的研究[J].分子催化,2001,15(1):21-24. |
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| 作者姓名： | 高俊杰 陆愚 |
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| 作者单位： | 1. 中国科学院成都有机化学研究所,
2. 上海市医药学校, |
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| 基金项目： | 四川省青年科技基金资助项目 (1998，第三批 ) |
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| 摘 要： | 用Ti(OBu)4、TiOCH(CH3)2]4和T(OPh)43种钛酸酯作催化剂，对碳酸二甲酯（DMC）与苯酯的酯交换反应进行了研究。以Ti(OBu)4为催化剂，对反应的热力学、原料配比、催化剂用量、反应温度和反应时间等工艺条件进行了考察 。实验表明，当DMC：苯酚：Ti(OBu)4(摩尔比）＝1.5:1:0.05、反应温度175℃、反应时间为25h时，酯交换反应基本上达到平衡，苯酚的转化率为47.4％，MPC的选择性为90.9%，DPC的选择性为9.14%.
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| 关 键 词： | 钛酸酯 酯交换 苯酯 碳酸二甲酯 碳酸二苯酯 催化剂 |
| 文章编号： | 1001-3555(2001)01-0021-04 |
| 修稿时间： | 2000年7月3日 |
Process of the Transesterification of Dimethyl Carbonate and Phenol in the Presence of Titanates |
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| GAO Jun jie,YAO Jie,WANG Gong ying.Process of the Transesterification of Dimethyl Carbonate and Phenol in the Presence of Titanates[J].Journal of Molecular Catalysis (China),2001,15(1):21-24. |
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| Authors: | GAO Jun jie YAO Jie WANG Gong ying |
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| Abstract: | The transesterification of phenol and DMC was investigated using three kinds of titanate catalysts. Thermodynamics, proportion of materials, amount of catalyst, reaction temperature and reaction time were also investigated based on Ti(OBu)4. According to the experimental results, when the reaction is carried out for 25 h at n(DMC)∶n(PhOH)∶n［Ti(OBu)4］(molar ratio)=1.5∶1∶0.05 and temperature of 175 ℃, the transesterification basically reaches equilibrium, the conversion of phenol is 47.4%, the selectivity for MPC is 90.9% and the selectivity for DPC was 9.14% when methanol is seperated in situ. |
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| Keywords: | Titanates Transesterification Phenol DMC |
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