发明名称 |
Purification of 1,1,1,2-tetrafluoroethane. |
摘要 |
<p>A process for the removal of 1-chloro-2,2-difluoroethylene from 1,1,1,2-tetrafluoroethane by contacting the mixture with a zeolite having a mean pore size in the range of 3.5 ANGSTROM and 4.8 ANGSTROM and having potassium as counter cation. The zeolite having potassium as counter-cation may be produced by cation-exchange with a commercially available zeolite, for example AW-500. <IMAGE></p> |
申请公布号 |
EP0526002(A2) |
申请公布日期 |
1993.02.03 |
申请号 |
EP19920306123 |
申请日期 |
1992.07.02 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
SHIELDS, CHARLES JOHN;SWINDELLS, ARIAN SEYMOUR |
分类号 |
C07C17/38;B01D53/02;B01D53/04;B01J20/18;C07C17/06;C07C17/389;C07C19/08 |
主分类号 |
C07C17/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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