Abstract
The rare-earth elements La, Ce, Nd, Gd, Yb, Lu introduced into a Pt/Al2O3 catalyst were found to exert a favorable effect on the surface area and stability of platinum at high temperatures. This effect is attributed to the formation of pyrochlore — A2Pt2O/7−x/Clx or perovskite — APtO/3−x/Clx surface compounds.
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