Synthesis of propylene carbonate and some dialkyl carbonates in the presence of bifunctional catalyst compositions
Synthesis of propylene carbonate and some dialkyl carbonates in the presence of bifunctional catalyst compositions
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DOI：
10.1002/(sici)1099-1581(199608)7:8
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发表时间：
1996-08
影响因子：
3.4
通讯作者：
Hong Zhu;Li-Ban Chen;Yingyan Jiang
中科院分区：
文献类型：
--
作者：
Hong Zhu;Li-Ban Chen;Yingyan Jiang
在平稳的实验条件下，聚乙二醇-碘化钾络合物对环氧丙烷和二氧化碳的酯化反应具有很高的催化活性。此外，还与甲醇钠形成了双功能催化剂组合物，用于上述酯化反应以及与甲醇、乙醇、丙醇、正丁醇等脂肪醇原位生成的碳酸亚丙酯的酯交换反应。结果表明，合成的二烷基碳酸酯、碳酸亚丙酯和丙二醇组分非常有效。结果表明，由正丁醇生成的二烷基碳酸酯是碳酸二异丁酯，而不是碳酸二丁酯。
Poly(ethylene glycol)–potassium iodide complexes were found to have high catalytic activities in the esterification of propylene oxide and carbon dioxide under smooth experimental conditions. Furthermore, the complexes were combined with sodium methoxide to form bifunctional catalyst compositions sequentially for the above esterification, as well as the transesterification of the propylene carbonate formed in situ with some aliphatic alcohols, such as methanol, ethanol, propanol and butanol. It was found that the compositions were very effective, giving corresponding dialkyl carbonate, propylene carbonate and propylene glycol. It was noticed that the resulting dialkyl carbonate from n-butanol was diisobutyl carbonate, instead of di-n-butyl carbonate.