Palladium bars are cheaper than palladium bullion coins so they're a convenient option for buyers 0.15 % palladium; 0.15 % platinum on aluminum oxide (K-02131) is a platinum catalyst on an aluminum oxide sphere with a high surface area. The catalyst is used to purify inert gases (N2, CO2), especially in the thermal treatment of polymers (PET, nylon) in the Solid State Polycondensation Process (SSP). Moreover, the catalyst is used in the removal of organic substances and VOC reduction in process and exhaust gases, in the O2 removal from N2 streams and in CO2 cleaning. The platinum catalyst can be purchased in various Pt concentrations from 0.1 to 0.5% by weight. After use, the spent catalyst can be returned to palladium recycling for recycling of the valuable precious metals.