Kinetics studies of dimethyl carbonate synthesis from urea and methanol over zno catalyst
文献类型：期刊论文
| 作者 | Zhang, Junliang1,2; Wang, Feng1; Wei, Wei1; Xiao, Fukui1; Sun, Yuhan1 |
| 刊名 | Korean journal of chemical engineering
 |
| 出版日期 | 2010-11-01 |
| 卷号 | 27期号:6页码:1744-1749 |
| 关键词 | Kinetics Dimethyl carbonate Methanol Urea |
| ISSN号 | 0256-1115 |
| DOI | 10.1007/s11814-010-0306-4 |
| 通讯作者 | Wei, wei(weiwei@sxicc.ac.cn) |
| 英文摘要 | A kinetic experiment of dimethyl carbonate (dmc) synthesis by urea methanol over zno catalyst was carried out in an isothermal fixed-bed reactor. a kinetic model based on the mole fraction was proposed and the kinetic parameters were estimated from the experimental results. the model predictions were compared with the experimental data and fair agreements were found. the effects of the reaction temperature (443-473 k), space time (0-4.7 h mol(-1) kg(cat)) and urea mass percent (5-9%) in feed on dmc mole fraction were investigated. it was found that the reactions are mainly influenced by the reaction temperature and space time rather than urea mass percent in feed. the experimental and simulated results indicated that the reaction from mc to dmc was the rate-controlling step in the dmc synthesis process from urea and methanol. it is important to remove the dmc and byproduct ammonia to achieve a high selectivity of dmc. this implies that reactive distillation might be used in the dmc synthesis on an industrial scale to achieve a higher selectivity of dmc. |
| WOS关键词 | DIOXIDE ; DECOMPOSITION ; CARBAMATE ; PRESSURE ; BASES |
| WOS研究方向 | Chemistry ; Engineering |
| WOS类目 | Chemistry, Multidisciplinary ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000283837100017 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2412480 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wei, Wei |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Junliang,Wang, Feng,Wei, Wei,et al. Kinetics studies of dimethyl carbonate synthesis from urea and methanol over zno catalyst[J]. Korean journal of chemical engineering,2010,27(6):1744-1749. |
| APA | Zhang, Junliang,Wang, Feng,Wei, Wei,Xiao, Fukui,&Sun, Yuhan.(2010).Kinetics studies of dimethyl carbonate synthesis from urea and methanol over zno catalyst.Korean journal of chemical engineering,27(6),1744-1749. |
| MLA | Zhang, Junliang,et al."Kinetics studies of dimethyl carbonate synthesis from urea and methanol over zno catalyst".Korean journal of chemical engineering 27.6(2010):1744-1749. |
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来源：中国科学院大学
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