| 摘要 |
PURPOSE:To decompose malodors of a nitrogen system and sulfur system and to exhibit an excellent deodorizing effect by incorporating silver, copper and iron into glass of a phosphate system and setting the dissolution rate of PO4<-3> ion, Ag<+> ion, Cu<2+> ion, Fe<3+> ion in a specific range. CONSTITUTION:The silver is incorporated into the glass and the dissolution rate of the Ag<+> ion from the glass is controlled to 10<-8> to 10<-6>g/glass 1g/Hr. The copper is incorporated into the glass to control the dissolution rate of the Cu<2+> ion to 10<-7> to 5X10<-5>g/glass 1g/Hr. The iron is incorporated into the glass to control the dissolution rate of the Fe<3+> ion to 10<-7> to 5X10<-5>g/glass 1g/Hr. The Ag<+> ion, Cu<2+> ion and the Fe<3+> ion are all suitable for decomposing the malodors of the sulfur system, such as H2S, CH3SH. The reason for limiting the dissolution rate of the respective ions lie in that the deodorizing effect decreases if the rate is below the numerical value limiting range mentioned above and that metals are liable to precipitate at the time of glass melting and the production of the glass is difficult if the rate conversely exceeds the numerical value-limiting range. |
