Air filtration media comprising metal-doped silicon-based gel materials

摘要: The present invention relates generally to an environmental control unit for use in air handling systems that provides highly effective filtration of noxious gases (such as ammonia). Such a system utilizes novel metal-doped silica-based gels trap and remove such undesirable from enclosed environment. exhibit specific porosity requirements density measurements. Furthermore, order proper metal doping take effect, must be treated while wet state. combination these particular properties dopant permits gas uptake breakthrough results are attained, particularly comparison with prior silica gel products. Methods using filter apparatuses also encompassed within this invention.