Abstract:
Device for absorption of carbon dioxide in a breathing apparatus and including a hose (1) for the breathing air. The hose (1) is at least partly filled with an absorption mass (4) including a carbon dioxide absorbing stuff (6) in granular form (5) which is mixed with a spacing substance (6) being of such character that it offers the breathing air a relatively low resistance. Alternatively the absorption mass (4) is in the shape of a porous framework with a plurality of granules (5) which are in pont contact with each other.
Abstract:
In Kohlenoxid-Atemschutzfiltern wird das in der Einatemluft enthaltene giftige Kohlenoxid auf der Oberfläche von Kohlenoxid-Katalysatoren mit Luftsauerstoff zur Reaktion gebracht und damit beseitigt. Für viele Anwendungsbereiche von Luftfiltern ist es jedoch wünschenswert, außer CO auch noch andere schädliche Gase aus der Luft zu entfernen. Der hier verwendete Pt-Katalysator als Atemschutzfiltermaterial bietet vor allem nur geringen Schutz zusätzlich gegen saure Gase. Durch eine zusätzliche Imprägnierung mit den Oxiden amminbildender Schwermetalle wird die Abscheideleistung gegenüber den sauren Gasen außerordentlich erhöht, ohne die Fähigkeit des Pt-Katalysators zur katalytischen CO-Oxidation zu verringern. Es ergibt sich sogar eine Verstärkung der jeweiligen Wirksamkeit.
Abstract:
Filter media that includes activated carbon particulates and zinc oxide particles disposed on surfaces of the activated carbon particulates. The zinc oxide particles have an average crystallite dimension that is not greater than about 50 nm.
Abstract:
The invention relates to a method for producing a catalyst system having at least one catalytically active component, wherein the catalytically active component comprises at least one metal, wherein first a spherical activated carbon used as a catalyst carrier is subjected to an oxidation. Subsequently, the catalytically active component is applied, optionally followed by a reduction of the catalyst system obtained in said manner.
Abstract:
A mask is provided that can inactivate viruses adhering thereto even in the presence of lipids and proteins regardless of whether or not the viruses have an envelope. The mask can inactivate viruses adhering thereto and includes a mask body provided with a member used when the mask is worn and virus inactivating fine particles having a virus inactivating ability and held by the mask body. The virus inactivating fine particles are particles of at least one selected from the group consisting of platinium(II) iodide, palladium(II) iodided, silver(I) iodide, copper(I) iodide, and copper(I) thiocyanate.