Community Research and Development Information Service - CORDIS

Extraction of phosphorus and metal contaminants from aged commercial three-way catalysts by using weak organic acid solutions

The developed procedure consists of the use of weak organic acid solutions (citric, oxalic acid) at a low temperature (T=50ºC) to remove phosphorous and other metal contaminants (e.g., Pb, Fe, Cu, Ni, Cr) from a commercial TWC.

The potential application of the described process is to permit the extraction of metal poisons from aged three-way catalytic converters in an easy and cheap way, and also from similar commercial catalysts the deactivation of which is also due to metal deposition.

Reported by

University of Cyprus (UOC)
Kallipoleos 75
1678 Nicosia
Cyprus
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