摘要:
Disclosed is a 12CaO.7Al2O3 compound, a 12SrO.7Al2O3 compound, or a mixed crystal compound of 12CaO.7Al2O3 and 12SrO.7Al2O3, which contains a negative hydrogen ion (H−, H2−, H2− at a concentration of 1×1018 cm−3 or more. A negative hydrogen ion comprising a primary component of a hydride ion is incorporated into C12A7 (12CaO.7Al2O3), so that a function of being converted from an insulative material to an electrically conductive material in a sustained manner by means of irradiation with light can be exhibited even in the normal atmosphere at a room temperature. The present invention also provides a solid electrolyte capable of conducting a negative hydrogen ion, and means for releasing a hydride ion from the inside of a solid into a gaseous phase using an electric field.
摘要翻译:公开了一种12CaO·0.7Al 2 O 3 N 3化合物,12SrO·7H 2 O 3 O 3化合物,或 12CaO.7Al 2 O 3 3和12SrO 7 Al 2 O 3 3 N 3的混合晶体化合物,其含有负的 浓度为1×10 18的氢离子(H 2 - ,H 2 - ,H 2 - ) 包含氢离子的主要成分的负极性氢离子被并入到C12A7(12Ca0.7Al2O3)中, <! - SIPO - >,即使在室温的正常气氛中也可以显示通过照射光从持续的方式将绝缘材料转换成导电材料的功能,本发明还提供 能够导入负氢离子的固体电解质,以及使用电场将氢离子从固体内部释放到气相中的装置。
摘要:
A method for making a metal oxide material and catalyzing the oxidative coupling of methane, including mixing a metal cation-containing oxidizer portion and a reducing fuel portion with water to define an aqueous solution, evaporatively removing water from the aqueous solution to yield a concentrated liquid, burning the concentrated liquid yield an homogeneous metal oxide powder, flowing methane from a first source and oxygen from a second source over the homogeneous metal oxide powder, and catalyzing an oxidative coupling of methane reaction with the homogeneous metal oxide powder. The homogeneous metal oxide powder contains metal oxides selected from the group including LaSrAlO4, LaAlO3, Sr3Al2O6, Na2WO4—Mn/SiO2, and combinations thereof.
摘要:
The present invention relates to a mayenite-type compound in which a part of Ca of a mayenite-type compound containing Ca, Al and oxygen is substituted by at least one kind of an atom M selected from the group consisting of Be, Mg and Sr, in which the mayenite-type compound has an atom number ratio represented by M/(Ca+M) of from 0.01 to 0.50, and at least a part of free oxygen ions in a mayenite-type crystal structure are substituted by anions of an atom having electron affinity smaller than that of an oxygen atom.
摘要:
Provided is a method for preparing an electroconductive mayenite type compound with good properties readily and stably at low cost without need for expensive facilities, a reaction at high temperature and for a long period of time, or complicated control of reaction.A method for preparing an electroconductive mayenite type compound comprises a step of subjecting a precursor to heat treatment, wherein the precursor contains Ca and/or Sr, and Al, a molar ratio of (a total of CaO and SrO:Al2O3) is from (12.6:6.4) to (11.7:7.3) as calculated as oxides, a total content of CaO, SrO and Al2O3 in the precursor is at least 50 mol %, and the precursor is a vitreous or crystalline material; and the method comprises a step of mixing the precursor with a reducing agent and performing the heat treatment of holding the mixture at 600-1,415° C. in an inert gas or vacuum atmosphere with an oxygen partial pressure of at most 10 Pa.
摘要翻译:本发明提供一种低成本地容易且稳定地制备具有良好性能的导电性钙铝石型化合物的方法,而不需要昂贵的设备,高温反应和长时间的反应或复杂的反应控制。 制备导电性钙铝石型化合物的方法包括使前体进行热处理的步骤,其中前体含有Ca和/或Sr,和Al,(CaO和SrO:Al 2 O 3的总和)的摩尔比为( 12.6:6.4)至(11.7:7.3),前体中CaO,SrO和Al2O3的总含量为至少50摩尔%,前体为玻璃态或结晶性材料; 该方法包括将前体与还原剂混合并在氧分压至多10Pa的惰性气体或真空气氛中进行600-1,415℃保持混合物的热处理的步骤。
摘要:
In a solid solution system of Al2O3 and CAO or SrO, it has been difficult to obtain a material having a high electrical conductivity (>10−4 S·cm−) at room temperature. A compound is provided in which electrons at a high concentration are introduced into a 12CaO.7Al2O3 compound, a 12SrO.7Al2O3 compound, or a mixed crystal compound containing 12CaO.7Al2O3 and 12SrO.7Al2O3. The compound formed by substituting all the free oxygen ions with electrons is regarded as an electride compound in which [Ca24Al28O64]4+(4e−) or [Sr24Al28O64]4+(4e−) serves as a cation and electrons serve as anions. When a single crystal or a hydrostatic pressure press molded material of a fine powder thereof is held at approximately 700° C. in an alkaline metal vapor or an alkaline earth metal vapor, melt of a hydrostatic pressure press molded material of a powder is held at approximately 1,600° C. in a carbon crucible, followed by slow cooling for solidification, or a thin film of the compound held at approximately 600° C. is implanted with rare gas ions, a great number of the free oxygen ions can be substituted with electrons.
摘要翻译:在Al 2 N 3 O 3和CAO或SrO的固溶体系中,难以获得具有高导电性的材料(> 10 -4 SUP> S.cm SUP>)在室温下。 提供了一种化合物,其中将高浓度的电子引入12CaO7Al 2 O 3 O 3化合物,12SrO·7H 2 O 2 或者含有12CaO.7Al 2 O 3 3和12SrO 7 Al 2 O 3的混合晶体化合物, SUB> 3 SUB>。 通过用电子代替全部游离氧离子而形成的化合物被认为是电化学化合物,其中[Ca 2 H 12 O 12 O 64] (4e-sup) - 或[Sr 2 O 2] 28 O 64] SUP + 4 +(4e - - )用作阳离子,电子用作阴离子。 当在碱金属蒸气或碱土金属蒸气中将其细粉末的单晶或静水压成型材料保持在约700℃时,将粉末的流体静压加压成型材料的熔体保持在 在碳坩埚中约1600℃,然后缓慢冷却固化,或者在约600℃保持的化合物薄膜注入稀有气体离子,大量的游离氧离子可被 电子。
摘要:
A ceramic component, in particular based on zirconia and/or alumina, for a timepiece or jewelry piece, comprising at least one noble metal among platinum, rhodium, osmium, palladium, ruthenium and iridium, at a quantity of less than or equal to 5% by weight.
摘要:
A catalyst carrier may include an aluminate based body and may have a specific surface area of not greater than about 20 m2/g. The aluminate based body may include a hexaaluminate phase.
摘要:
Provided is a method for preparing an electroconductive mayenite type compound with good properties readily and stably at low cost without need for expensive facilities, a reaction at high temperature and for a long period of time, or complicated control of reaction. A method for preparing an electroconductive mayenite type compound comprises a step of subjecting a precursor to heat treatment, wherein the precursor contains Ca and/or Sr, and Al, a molar ratio of (a total of CaO and SrO:Al2O3) is from (12.6:6.4) to (11.7:7.3) as calculated as oxides, a total content of CaO, SrO and Al2O3 in the precursor is at least 50 mol %, and the precursor is a vitreous or crystalline material; and the method comprises a step of mixing the precursor with a reducing agent and performing the heat treatment of holding the mixture at 600-1,415° C. in an inert gas or vacuum atmosphere with an oxygen partial pressure of at most 10 Pa.
摘要翻译:本发明提供一种低成本地容易且稳定地制备具有良好性能的导电性钙铝石型化合物的方法,而不需要昂贵的设备,高温反应和长时间的反应或复杂的反应控制。 制备导电性钙铝石型化合物的方法包括以下步骤:将前体进行热处理,其中前体含有Ca和/或Sr,和Al,(CaO和SrO:Al 2的总和的摩尔比 (12.6:4.4)至(11.7:7.3)按氧化物计算,CaO,SrO和Al 2 O 2的总含量 前体中的3 <3>至少为50摩尔%,前体是玻璃状或结晶的材料; 该方法包括将前体与还原剂混合并在氧分压至多10Pa的惰性气体或真空气氛中进行600-1,415℃保持混合物的热处理的步骤。
摘要:
Provided is a method for preparing an electroconductive mayenite type compound with good properties readily and stably at low cost. A production method of an electroconductive mayenite type compound comprising a step of subjecting a precursor to heat treatment, is a method for preparing an electroconductive mayenite type compound, comprising a step of subjecting a precursor to heat treatment; wherein the precursor is a vitreous or crystalline material, which contains Ca and Al, in which a molar ratio of (CaO:Al2O3) is from (12.6:6.4) to (11.7:7.3) as calculated as oxides, and in which a total amount of CaO and Al2O3 is at least 50 mol %, and wherein the heat treatment is heat treatment comprising holding the precursor at a heat treatment temperature T of from 600 to 1415° C. and in an inert gas or vacuum atmosphere with an oxygen partial pressure PO2 in a range of PO2≦105×exp[{−7.9×l04/(T+273)}+14.4] in the unit of Pa.
摘要翻译:提供了一种以低成本容易且稳定地制备具有良好性能的导电性钙铝石型化合物的方法。 包括对前体进行热处理的步骤的导电性钙铝石型化合物的制造方法是制备导电性钙铝石型化合物的方法,包括使前体进行热处理的工序; 其中所述前体是含有Ca和Al的玻璃质或结晶材料,其中(CaO:Al 2 O 3 3)的摩尔比为(12.6:6.4) )至(11.7:7.3),其中CaO和Al 2 O 3 3的总量为至少50摩尔%,其中热量 处理是热处理,包括将前体保持在600-1415℃的热处理温度T下,在氧分压P
摘要:
The present invention provides a method for producing an aluminate-based phosphor or a luminescent aluminate-based phosphor, which comprises calcining an aluminum compound having a BET specific surface area of 100 m2/g or more.