POROUS SILICA ALUMINA PARTICLES AND METHOD FOR PRODUCING THE SAME

To provide porous silica-alumina particles having a high specific surface area and a high pore volume.SOLUTION: Amorphous porous silica-alumina particles having a small residual amount of alkali metal ions and mineral acid ions are provided by repeating a step of obtaining a mixture gel slurry throu...

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Hauptverfasser:	TSURUTA SHUNJI, MATSUMOTO HIROSHI, HAMAZAKI YUICHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:	To provide porous silica-alumina particles having a high specific surface area and a high pore volume.SOLUTION: Amorphous porous silica-alumina particles having a small residual amount of alkali metal ions and mineral acid ions are provided by repeating a step of obtaining a mixture gel slurry through mixing of silica hydrogel with pseudo-boehmite alumina hydrate and washing and drying the mixture gel slurry.SELECTED DRAWING: None 【課題】高い比表面積と高い細孔容積をもつ多孔質シリカアルミナ粒子を提供する。【解決手段】シリカヒドロゲルと擬ベーマイトアルミナ水和物を混合した混合物ゲルスラリーを得る工程と、該混合物ゲルスラリーの洗浄・乾燥を繰り返し、アルカリ金属イオンや鉱酸イオン残存量の少ない非晶質の多孔質シリカアルミナ粒子を得る。【選択図】なし