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ADSORBENT FOR PURIFYING PERFLUOROCARBON, PROCESS FOR PRODUCING SAME, HIGH PURITY OCTAFLUOROPROPANE AND OCTAFLUOROCYCLOBUTANE, AND USE THEREOF
ADSORBENT FOR PURIFYING PERFLUOROCARBON, PROCESS FOR PRODUCING SAME, HIGH PURITY OCTAFLUOROPROPANE AND OCTAFLUOROCYCLOBUTANE, AND USE THEREOF
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机译:用于纯化全氟碳的吸附剂,生产相同的,高纯度八氟丙烷和八氟环丙烷的方法及其用途
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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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