Abstract: The invention provides a noble metal-containing supported catalyst which contains one of the noble metals from the group Au, Ag, Pt, Pd, Rh, Ru, Ir, Os or alloys of one or more of these noble metals in the form of noble metal particles on a powdered support material. The particles deposited on the support material have a degree of crystallinity, determined by X-ray diffraction, of more than 2 and an average particle size between 2 and 10 nm. The high crystallinity and the small particle size of the noble metal particles lead to high catalytic activity for the catalyst. It is particularly suitable for use in fuel cells and for the treatment of exhaust gases from internal combustion engines.

Abstract: New electromagnetic interference (EMI) shielding pigments based on silver coated carrier pigments are disclosed which have a wider activity spectrum and are more economically available than previously known shielding pigments. The carrier pigments used are platelet shaped, ferro- or ferrimagnetic, Fe-containing, naturally occurring or synthetically produced laminar minerals. The Ag coating amounts to 5 to 25% by weight, based on the carrier pigment. Shielding pigments, which may be prepared by conventional chemical deposition of Ag or by sputtering, may be used for the production of EMI protective coatings and EMI protective films.

Abstract: Purple pigments based on glass frits having an average particle diameter (D.sub.50 value) of 0.5 to 50 .mu.m, of which the surface has a coating of essentially 0.05 to 5% by weight, based on the pigment, of colloidal gold and, if desired, color-modifying metals from the group consisting of Ag, Cu, Co, Ni, Sn, Ru, Rh, Pd, Os, Ir and Pt in a total quantity below that of the gold. The purple pigments do not require the hitherto necessary calcination step and can be used for pigmenting glazes, enamels, glass colors, decorative colors, plastics, printing inks and lacquers.

Abstract: A silver-glass composition for use in attaching a semiconductor support and a method for making the attachment are disclosed. The glass component of the composition is a low melting point glass comprising about 75-85 wt. % lead oxide, about 8-15% boron oxide, about 0.75 to 2.5 wt. % silicon-dioxide, 0-10 wt. % zinc oxide, 0 to 3 wt. % alumina, 0.5 to 5.5 wt. % cuprousoxide and a non-volatile metal fluoride in amount such that the mol ratio of cuprous oxide to the fluoride content of the metal fluoride is in the range 1.0:0.25 to 1.0:10. The weight ratio of silver to glass in the composition is in the range about 2:1 to 9:1.