发明名称 |
Adsorbent for purifying perfluorocarbon, process for producing same, high purity octafluoropropane and octafluorocyclobutane, and use thereof |
摘要 |
To provide a purification adsorbent capable of effectively removing impurities contained in a perfluorocarbon and obtaining a perfluorocarbon reduced in the impurity content to 1 ppm by mass or less; a process for producing the adsorbent; high-purity octafluoropropane or octafluorocyclobutane; processes for purifying and for producing the octafluoropropane or octafluorocyclobutane; and uses thereof. Purification is performed using a purification adsorbent produced by a method comprising (1) washing an original coal with an acid and then with water, (2) deoxidizing and/or dehydrating the original coal, (3) re-carbonizing the original coal at a temperature of from 500 to 700° C. and (4) activating the original coal at a temperature of from 700 to 900° C. in a mixed gas stream containing an inert gas, carbon dioxide and water vapor.
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申请公布号 |
US7094935(B2) |
申请公布日期 |
2006.08.22 |
申请号 |
US20030363215 |
申请日期 |
2003.03.06 |
申请人 |
SHOWA DENKO K.K. |
发明人 |
SUZUKI YASUHIRO;ATOBE HIROSHI;HORIBA MINAKO |
分类号 |
C07C17/38;B01J20/20;B01J20/30;B01J20/34;B01J21/18;B01J38/02;C01B31/10;C07C17/389 |
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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