| System and method for continuously producing polyoxymethylene dialkyl ethers | |
Chen J(陈静) ; Song HY(宋河远); Xia CG(夏春谷); Kang MR(康美荣); Jin RH(靳荣华)
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| 2015-06-30 | |
| Rights Holder | Lanzhou Institutea of Chemical Physics, Chinese Academy of Science |
| Date Available | 2014-04-24 |
| Country | 美国 |
| Abstract | A reaction system and method for producing polyoxymethylene dialkyl ethers (RO(CH2O)nR, n=1-8) by continuous acetalation of formaldehyde and aliphatic alcohol in the presence of an acid ionic liquid catalyst. The reaction system includes an acetalation reaction unit, a product separation unit, and a catalyst regeneration unit. The recyclable material and catalyst are separated by combining extraction and rectification, and a recovery rate of more than 99% for the catalyst is achieved. Water, as the byproduct, is separated from the reaction system by destroying the azeotrope of water, alcohol, aldehyde, and RO(CH2O)nR, so that the product separation and catalyst regeneration are facilitated and the catalytic cycle is achieved. |
| Subject Area | 物理化学与绿色催化 |
| Department | OSSO国家重点实验室 |
| Application Date | 2012-12-20 |
| Patent Number | US 9067188 B2 |
| Language | 英语 |
| Status | 授权 |
| Document Type | 专利 |
| Identifier | http://ir.licp.cn/handle/362003/19098 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） |
| Affiliation | Lanzhou Institutea of Chemical Physics, Chinese Academy of Science |
| Recommended Citation GB/T 7714 | Chen J,Song HY,Xia CG,et al. System and method for continuously producing polyoxymethylene dialkyl ethers. US 9067188 B2[P]. 2015-06-30. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| US9067188B2[1].pdf（103KB） | 专利 | 开放获取 | CC BY-NC-SA | View Application Full Text | ||
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