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    • 3. 发明授权
    • Method for preparing mayenite-containing oxide and method for preparing electroconductive mayenite-containing oxide
    • 制备含钙锰氧化物的方法及其制备含导电钙铝氧化物的方法
    • US08377413B2
    • 2013-02-19
    • US13192568
    • 2011-07-28
    • Kazuhiro ItoSatoru WatanabeNaomichi MiyakawaSetsuro ItoKazunari Watanabe
    • Kazuhiro ItoSatoru WatanabeNaomichi MiyakawaSetsuro ItoKazunari Watanabe
    • C01F7/00
    • C01F7/164C01P2006/40
    • To provide a method for preparing a mayenite-containing oxide containing a mayenite type compound and having a hydride ion density of at least 1×1018/cm3 without need for expensive facilities, control of complicated reaction conditions or a long period of reaction time. A method for preparing a mayenite-containing oxide, which comprises a firing step of heating a starting material having a molar ratio of CaO:Al2O3 being from 9:10 to 14:5 based on the oxides at a temperature of from 900 to 1,300° C. to obtain a fired powder and a hydrogenation step of firing the fired powder at a temperature of at least 1,210° C. and lower than 1,350° C. in a hydrogen-containing gas having an oxygen partial pressure of at most 1,000 Pa to obtain a mayenite-containing oxide containing a mayenite type compound and having a hydride ion density of at least 1×1018/cm3, and a method for preparing an electroconductive mayenite-containing oxide, which comprises irradiating the obtained mayenite-containing oxide with an ultraviolet ray etc. to obtain a mayenite-containing oxide containing an electroconductive mayenite type compound.
    • 为了提供一种制备含有钙铝石型化合物并且氢化物离子密度为至少1×1018 / cm3而不需要昂贵的设备,控制复杂的反应条件或长时间的反应时间的钙铝氧化物的方法。 一种含有钙铝石的氧化物的制造方法,其特征在于,在900〜1300℃的温度下,对CaO:Al 2 O 3的摩尔比为9:10〜14:5的原料进行加热, 以获得烧制粉末和氢化步骤,在氧分压至多为1000Pa的含氢气体中,在至少1,210℃且低于1350℃的温度下焙烧烧制粉末至 得到含有钙铝石型化合物,含氢离子密度为1×1018 / cm3以上的含钙锰矿的氧化物,以及制造含导电性钙铝的氧化物的方法,其包括用紫外线照射所得到的含有钙铝的氧化物 以获得含有导电钙铝石型化合物的含有钙铝的氧化物。
    • 5. 发明授权
    • Process for producing an oxide
    • 氧化物的制造方法
    • US08173085B2
    • 2012-05-08
    • US13080769
    • 2011-04-06
    • Kazuhiro ItoSatoru WatanabeKazunari WatanabeSetsuro Ito
    • Kazuhiro ItoSatoru WatanabeKazunari WatanabeSetsuro Ito
    • C01F7/00
    • C01F7/164C01P2004/61C01P2006/40
    • The present invention relates to a method for producing an oxide containing a conductive mayenite type compound and having an electron concentration of 1×1018/cm3 or more, from a raw material which is a combination of a calcium compound and an aluminum compound or is a compound containing calcium and aluminum, each having a molar ratio of calcium oxide and aluminum oxide ranging from 9:10 to 14:5 in terms of the oxides, the method including the steps of: heating and holding the raw material at 900 to 1,300° C. to produce a calcined powder containing at least one oxide selected from the group consisting of a calcium aluminate, calcium oxide and aluminum oxide; and heating and holding the calcined powder at 1,200° C. to less than 1,415° C. under a reduction atmosphere in an inert gas atmosphere or a vacuum atmosphere each having an oxygen partial pressure of 1,000 Pa or less.
    • 本发明涉及由钙化合物和铝化合物的组合的原料生成含有导电性钙铝石型化合物的氧化物的电子浓度为1×1018 / cm3以上的氧化物的方法, 包含钙和铝的化合物,其氧化物和氧化铝的摩尔比为9:10至14:5,氧化物的方法包括以下步骤:将原料加热至900至1300℃ 以制备含有选自铝酸钙,氧化钙和氧化铝中的至少一种氧化物的煅烧粉末; 在惰性气体气氛或氧气分压为1000Pa以下的真空气氛中,在还原气氛下,将煅烧后的粉末在1,200℃加热保持至小于1415℃。