Knowledge Management System Of Institute of process engineering,CAS
| Catalytic Synthesis of Methylene Diphenyl Dicarbamate in AcOH/H2O Mixed Solvent | |
| Alternative Title | Chem. Res. Chin. Univ. |
| Pei Yi-xia1,2; Li Hui-quan1; Liu Hai-tao1; Zhang Qin-hua1,2; Zhang Yi1 | |
| 2010-07-25 | |
| Source Publication | CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
 |
| ISSN | 1005-9040 |
| Volume | 26Issue:4Pages:550-553 |
| Abstract | In a mixed solvent of acetic acid(AcOH)/water, methylene diphenyl dicarbamate(MDC) was synthesized by the condensation of methyl phenyl carbamate(MPC) and formaldehyde in the presence of an inorganic acid catalyst. Based on the different solubilities to MPC and MDC, the mixed solvent showed higher catalytic performance than pure water. The mixed solvent not only promoted the condensation of MPC but aslo exhibited the advantage of the product separation with the reactants. Under the optimized conditions: a H2SO4 mass fraction of 31%, a reaction temperature of 95 degrees C and reaction time of 3.5 h, the yield of MDC reached 74.3%. In addition, the recycle of the solvent was also investigated.; In a mixed solvent of acetic acid(AcOH)/water, methylene diphenyl dicarbamate(MDC) was synthesized by the condensation of methyl phenyl carbamate(MPC) and formaldehyde in the presence of an inorganic acid catalyst. Based on the different solubilities to MPC and MDC, the mixed solvent showed higher catalytic performance than pure water. The mixed solvent not only promoted the condensation of MPC but aslo exhibited the advantage of the product separation with the reactants. Under the optimized conditions: a H2SO4 mass fraction of 31%, a reaction temperature of 95 degrees C and reaction time of 3.5 h, the yield of MDC reached 74.3%. In addition, the recycle of the solvent was also investigated. |
| Keyword | Mixed Solvent Methylene Diphenyl Dicarbamate Formaldehyde Liquid Acid |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | N-PHENYL CARBAMATE ; DIMETHYL CARBONATE ; MILD CONDITIONS |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| WOS ID | WOS:000281231200012 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/6275 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Pei Yi-xia,Li Hui-quan,Liu Hai-tao,et al. Catalytic Synthesis of Methylene Diphenyl Dicarbamate in AcOH/H2O Mixed Solvent[J]. CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2010,26(4):550-553. |
| APA | Pei Yi-xia,Li Hui-quan,Liu Hai-tao,Zhang Qin-hua,&Zhang Yi.(2010).Catalytic Synthesis of Methylene Diphenyl Dicarbamate in AcOH/H2O Mixed Solvent.CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,26(4),550-553. |
| MLA | Pei Yi-xia,et al."Catalytic Synthesis of Methylene Diphenyl Dicarbamate in AcOH/H2O Mixed Solvent".CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 26.4(2010):550-553. |
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| CatalyticSynthes_省略_（590KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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