Monoclinic zirconium dioxide having a large surface area

Details Monoclinic zirconium dioxide having a large surface area Monoclinic zirconium dioxide having a large surface area

1997-12-17

2000-03-07

Straub, Gary P.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502242, 423608, 423544, B01J 2300, B01J 2108, C01G 2502, C01B 1796

Patent

active

060340290

ABSTRACT:
Zirconium dioxide which is monoclinic to at least 80% by weight and has a BET surface area of at least 100 m.sup.2 /g is prepared by admixing aqueous zirconium salt solutions with ammonia, drying and calcining the precipitation product, aging the precipitation product, prior to drying, in aqueous phase at from 0 to 300.degree. C. and carrying out the calcination at from 200 to 600.degree. C.

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