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RARE EARTH CHLORIDE [1 record]

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Record 1 2001-12-04

English

Subject field(s)
  • Geochemistry
  • Petrochemistry
OBS

Rare earths are also used in the petroleum industry as catalysts. The rare-earth ions are introduced into zeolite-type oxide catalyst, say in the form of the chloride.

French

Domaine(s)
  • Géochimie
  • Chimie du pétrole
CONT

La composition classique des zéolithes de craquage est approximativement la suivante : teneur en sodium 0,25 % en poids [...], 8 à 30 % en poids d'oxydes de terres rares. On utilise pour réaliser l'échange un mélange commercial de chlorures de terres rares [...]

OBS

terre rare : Nom générique des oxydes et des métaux correspondants allant du lenthane [...] au lutétium [...]

Spanish

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