Umicore

About: Umicore is a company organization based out in Brussels, Belgium. It is known for research contribution in the topics: Catalysis & Exhaust gas. The organization has 1253 authors who have published 1516 publications receiving 23358 citations. The organization is also known as: Union Miniere.

Sustainable Resource Management in the Production Chain of Precious and Special Metals

Abstract: Metals are classical examples of non-renewable resources, and their extraction from Earth by mining of ores cannot be seen as sustainable in the strict sense of the word. Mining, by definition, depletes the ore reserves. Through mineral processing and subsequent smelting and refining, ores are disintegrated, and the desired metals are isolated for use in the technosphere. Special and precious metals play a key role in modern societies as they are of specific importance for clean technologies and other high tech equipment. Important applications are information technology (IT), consumer electronics, as well as sustainable energy production such as photovoltaic (PV), wind turbines, fuel cells and batteries for hybrid or electric cars. They are crucial for more efficient energy production (in steam turbines), for lower environmental impact of transport (jet engines, car catalysts, particulate filters, sensors, control electronics), for improved process efficiency (catalysts, heat exchangers), and in medical and pharmaceutical applications. Figure 18.1 provides an overview of these main applications areas for selected metals and illustrates their significance for modern life. For example, electronic products can contain up to 60 different elements and in their entity are major demand drivers for precious and special metals: Just the annual sales of mobile phones and computers account e.g. for about 3% of the world mine production of gold and silver, 15% of palladium and over 20% of cobalt (Hageluken and Meskers 2008).

Desulfurization of nox storage catalysts

Abstract: The present invention relates to the use of a particular method for the targeted desulfurization of particular nitric oxide storage catalysts (NOx storage catalysts). In particular, this invention is directed to the use of an adapted method on specifically composed storage catalysts.

Regelungsstrategie für ein Katalysatorkonzept zur Abgasnachbehandlung mit mehreren Stickoxid-Speicherkatalysatoren

Abstract: Verfahren zur Behandlung von Abgasen eines uberwiegend mager betriebenen Verbrennungsmotors mit einer Abgasreinigungsvorrichtung aufweisend einen vorzugsweise motornahen ersten Stickoxid-Speicherkatalysator und abstromseitig dazu im gleichen Abgasstrang einen oder mehrere weitere Stickoxid-Speicherkatalysatoren, welche jeweils raumlich getrennt zueinander angeordnet sind, und die Initiierung der Fettphase zur Regeneration der Stickoxid-Speicherkatalysatoren durch Erreichen von vorgegebenen Stickoxid-Schwellenwerten hinter den einzelnen Katalysatoren erfolgt, dadurch gekennzeichnet, dass a) der Abbruch der Fettphase zur Regeneration der Stickoxid-Speicherkatalysatoren dann eingeleitet wird, wenn hinter dem Katalysator, hinter dem der vorgegebene Stickoxid-Schwellenwerten als erstes uberschritten wurde, ein bestimmter Lambda-Wert unterschritten wird, wobei b) die jeweiligen vorgegebenen Stickoxid-Schwellenwerte in Stromungsrichtung immer niedriger gewahlt werden, und wobei c) ein Stickoxid-Speicherkatalysator der eine vorgegebene Stickoxidspeicheraktivitat nach der Regeneration nicht erreicht an der Regelung dann nicht mehr teilnimmt.