METHOD FOR PRODUCING ZIRCONIA-COATED POROUS SILICA

PROBLEM TO BE SOLVED: To provide a method for producing zirconia-coated porous silica having high alkali resistance.SOLUTION: A method for producing zirconia-coated porous silica has the steps of attaching inorganic oxo acid and/or a salt thereof, and a zirconium oxide precursor, in any order, or si...

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Hauptverfasser:	MIYAHARA HIROYOSHI, KAYANO YOICHI, ARIMITSU SHINNOSUKE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for producing zirconia-coated porous silica having high alkali resistance.SOLUTION: A method for producing zirconia-coated porous silica has the steps of attaching inorganic oxo acid and/or a salt thereof, and a zirconium oxide precursor, in any order, or simultaneously, to porous silica, and then firing. The inorganic oxo acid and/or the salt thereof may be at least one selected from the group consisting of sulfuric acid, carbonic acid, boric acid, and salts thereof.SELECTED DRAWING: None 【課題】耐アルカリ性が高いジルコニア被覆多孔質シリカの製造方法を提供する。【解決手段】無機オキソ酸及び／またはその塩と、ジルコニウム酸化物前駆体とを任意の順で、または同時に多孔質シリカに付着させ、次いで焼成する、ジルコニア被覆多孔質シリカの製造方法である。無機オキソ酸及び／またはその塩は、硫酸、炭酸、ホウ酸、及びこれらの塩からなる群から選択される１種以上を用いることができる。【選択図】なし