METHOD AND CATALYST FOR DECOMPOSING PERFLUOROCOMPOUND AND APPARATUS FOR TREATING PERFLUOROCOMPOUND

• Main Authors: KAWASAKI TERUFUMI, YAMASHITA HISAO, KANNO SHUICHI, TAMATA SHIN, ICHIKAWA SHINICHI
• Format: Patent
• Language: English; Korean
• Published: 06.03.2004
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE: To enhance the activity when a perfluorocompound such as CF4 and C2F6 containing only fluorine as halogen is decomposed at low temperature. CONSTITUTION: The fluorine in the perfluorocompound containing only fluorine as halogen is converted into hydrogen fluoride by bringing the perfluorocompound into contact with a catalyst containing Al, Ni and W as active components, the multiple oxide of Ni and Al and that of W and Ni at 500-800°C in the presence of steam or steam and oxygen. By using this catalyst, the low-temperature decomposition activity can be enhanced, namely, the perfluorocompound can be decomposed at a low temperature at a high decomposition rate.