Process for the preparation of monoclinic zirconium dioxide with high surface area

At least 80 wt.% monoclinic zirconium dioxide comprises a BET surface area of NOTLESS 100 m /g. Also claimed are: (a) at least 80 wt.% monoclinic sulphated dioxide with a sulphate content of 0.05-10 wt.%, calculated as SO4, and BET surface area of NOTLESS 100 m /g; (b) methods of preparing the dioxi...

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Bibliographische Detailangaben
Hauptverfasser:	STICHERT, WOLFRAM, WULFF-DOERING, JOACHIM, SCHUETH, FERDI, DR
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	At least 80 wt.% monoclinic zirconium dioxide comprises a BET surface area of NOTLESS 100 m /g. Also claimed are: (a) at least 80 wt.% monoclinic sulphated dioxide with a sulphate content of 0.05-10 wt.%, calculated as SO4, and BET surface area of NOTLESS 100 m /g; (b) methods of preparing the dioxides; (c) zirconium dioxide prepared by these methods; (d) mouldings containing zirconium dioxide of these types; (e) the production of mouldings by pressing the zirconium dioxide; and (f) a catalyst with a support of zirconium dioxide of these types, doped with 0.1-20 wt.% catalytically active metal(s).