文献类型：期刊文献

英文题名：CO2/Water-Regulating Transamidation of Urea and Amines

作者：Zhang, Ran[1];Guo, Li[1];Chen, Jizhong[1];Gan, Huimei[1];Song, Baoning[1];Zhu, Wenwen[1];Hua, Li[1];Hou, Zhenshan[1]

机构：[1]E China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China

年份：2014

卷号：2

期号：5

起止页码：1147

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20142017723567);WOS:【SCI-EXPANDED(收录号:WOS:000335547600009)】；

基金：The authors are grateful for the support from the National Natural Science Foundation of China (No. 21373082), the Research Fund for the Doctoral Program of Higher Education of China (20100074110014), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Carbon dioxide; Urea derivatives; Transamidation of urea; Ammonia scrubbing; Green chemistry

摘要：The process of urea transamidation with amine to urea derivative has been developed in the presence of both carbon dioxide and water. Through the present reaction route, not only can the urea derivatives be obtained in high yield, but also inorganic salt ammonium bicarbonate (ABic) can be successfully isolated simultaneously from the reaction mixture. The phase behavior observed in situ by high pressure visual autoclave illustrated that the reaction occurred in biphasic conditions during the reaction. A number of verifying tests were conducted to investigate the role of carbon dioxide and water in the system. It was found that reaction temperature, total pressure, reaction time, and water played a crucial role in producing urea derivatives. The further investigation showed that the transamidation reaction between various amines and urea occurred successfully without the addition of any other catalysts in the presence of CO2 and water. The acidity resulting from reaction of CO2 with water facilitated the transamidation reaction.