Abstract: An improved air purification adsorbent is disclosed. The air purification adsorbent comprises titanium dioxide (TiO2) impregnated with zinc chloride (ZnCl2). The adsorbent may be used in air purification systems for removing ammonia from air streams. The nanocrystalline (amorphous) structure of the adsorbent results in a higher density of surface defects, higher surface area, and higher reactivity which, when combined with the synergistic effect of ZnCl2 and the nanocrystalline TiO2, provides a significantly longer breakthrough time of ammonia as compared with breakthrough time from unimpregnated nanocrystalline TiO2, the commercial (crystalline) TiO2 impregnated with ZnCl2, pure ZnCL2, and other commercially available adsorbents of ammonia. Other embodiments are described and claimed.

Abstract: To achieve the removal of a broad spectrum of chemical hazards, multiple layers of impregnated activated carbon and nanocrystalline materials are incorporated into the adsorbent bed. For optimum performance using the least amount of material, a two-layer configuration is used. The top layer consists of a homogeneous mixture of an MgO/CaO based nanocrystalline material (e.g., Mg/Ca) and Kureha or other petroleum pitch-based bead shaped activated carbon impregnated treated with phosphoric acid. The bottom layer is comprised of a single layer of Calgon URC carbon. The volume ratios of the components are 9:5:11 Mg/Ca, phosphoric acid treated Kureha carbon, and URC, respectively. The new configuration leads to a 30% reduction in size of the existing NIOSH CBRN CAP 1 cartridge. Other embodiments are disclosed and claimed.

Abstract: An improved air purification adsorbent is disclosed. The air purification adsorbent comprises titanium dioxide (TiO2) impregnated with zinc chloride (ZnCl2). The adsorbent may be used in air purification systems for removing ammonia from air streams. The nanocrystalline (amorphous) structure of the adsorbent results in a higher density of surface defects, higher surface area, and higher reactivity which, when combined with the synergistic effect of ZnCl2 and the nanocrystalline TiO2, provides a significantly longer breakthrough time of ammonia as compared with breakthrough time from unimpregnated nanocrystalline TiO2, the commercial (crystalline) TiO2 impregnated with ZnCl2, pure ZnCL2, and other commercially available adsorbents of ammonia. Other embodiments are described and claimed.

Abstract: To achieve the removal of a broad spectrum of chemical hazards, multiple layers of impregnated activated carbon and nanocrystalline materials are incorporated into the adsorbent bed. For optimum performance using the least amount of material, a two-layer configuration is used. The top layer consists of a homogeneous mixture of an MgO/CaO based nanocrystalline material (e.g., Mg/Ca) and Kureha or other petroleum pitch-based bead shaped activated carbon impregnated treated with phosphoric acid. The bottom layer is comprised of a single layer of Calgon URC carbon. The volume ratios of the components are 9:5:11 Mg/Ca, phosphoric acid treated Kureha carbon, and URC, respectively. The new configuration leads to a 30% reduction in size of the existing NIOSH CBRN CAP 1 cartridge. Other embodiments are disclosed and claimed.