HOLLOW ACTIVATED CARBON-TITANIUM DIOXIDE COMPOSITE AND ITS PRODUCTION

• Main Author: FUJIMAGARI HITOSHI
• Format: Patent
• Language: English
• Published: 12.11.1996
• Edition: 6
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE: To obtain a hollow activated carbon-titanium dioxide composite having the adsorptivity for harmful materials particular to activated carbon and the decomposability for harmful materials particular to titanium dioxide by mixing an melting a granular thermoplastic resin with a powdery activated carbon to produce a molding, sticking powdery titanium oxide alone or a composite or mixture with other materials directly or indirectly to the surface of the molding, and after that, carbonizing by heating to make the activated carbon molding hollow and to directly or indirectly fix the powdery titanium dioxide. CONSTITUTION: The powdery activated carbon >=3 times more than the particulate thermoplastic resin in volume ratio is preferably used. Gold, silver, titanium dioxide, zinc oxide, zeolite or the like can be properly used jointly with activated carbon. The granular thermoplastic resin such as polyethylene, polypropylene is used. As the titanium dioxide, the anatase type and rutile type can bee used and the particle diameter is controlled to 0.1-1.0μm. The heating condition for obtaining the molding is 250-350 deg.C. The size of the molding is preferably 100μm to 5mm.