SODIUM FERRITE PARTICLE POWDER AND METHOD FOR PRODUCING THE SAME

To provide a sodium ferrite particle powder that adsorbs carbon dioxide in the temperature range from room temperature to 100°C, can recover carbon dioxide by heating at 150°C or less, and have excellent moldability and processability, and to provide a method for producing the particle powder.SOLUTI...

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Hauptverfasser:	SHIMO SHINYA, SAKAMOTO MUNEYOSHI, KURITA EIICHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F 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:	To provide a sodium ferrite particle powder that adsorbs carbon dioxide in the temperature range from room temperature to 100°C, can recover carbon dioxide by heating at 150°C or less, and have excellent moldability and processability, and to provide a method for producing the particle powder.SOLUTION: Provided is a sodium ferrite particle powder in which, characterized, at least one or more metals selected from the group of trivalent metals consisting of Al, Ga, In, Cr, Mn, Co, Rh, Sc, Y and Ce exist in a solid solution state or in a state having no specific crystal forms by 0.05 to 5 wt.% in terms of oxide, and the mole ratio of Na/Fe is 0.75 to 1.25.SELECTED DRAWING: None 【課題】本発明は、二酸化炭素を室温から１００℃までの温度範囲で吸着し、１５０℃以下の加熱で二酸化炭素を回収でき、且つ成形性や加工性に富んだナトリウムフェライト粒子粉末、並びに該粒子粉末の製造方法を提供する。【解決手段】Ａｌ、Ｇａ、Ｉｎ、Ｃｒ、Ｍｎ、Ｃｏ、Ｒｈ、Ｓｃ、Ｙ及びＣｅからなる３価金属群より選ばれた少なくとも１種類以上の金属が、固溶、または、特定の結晶形態を持たない状態で、酸化物換算として０．０５～５重量％存在し、Ｎａ／Ｆｅのモル比が０．７５～１．２５であることを特徴とするナトリウムフェライト粒子粉末である。【選択図】なし