Method of producing metal oxyhydride, metal oxyhydride, and method of synthesizing ammonia using same
AssigneeJapan Science and Technology Agency
InventorsMasaaki Kitano, Hideo Hosono, Toshiharu Yokoyama, Kayato Ooya, Kiya Ogasawara, Ryu Takashima
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Abstract
The invention provides a method of producing a metal oxyhydride, capable of synthesizing the metal oxyhydride under reaction conditions close to atmospheric pressure, and excellent in productivity and cost. The method of producing a metal oxyhydride of the present invention includes reacting an oxide with a metal hydride in a hydrogen atmosphere. A non-oxygen element constituting the oxide comprises only one kind of non-oxygen element. A pressure condition of the reaction is 0.1 to 0.9 MPa, and a temperature of the reaction is 500 to 1000° C.
Claims5
A method of producing a metal oxyhydride by reacting an oxide with a metal hydride in a hydrogen atmosphere,
- wherein
- a pressure condition of the reaction is 0.1 to 0.9 MPa;
- a temperature of the reaction is 500 to 1000° C.;
- the oxide is MmOn,
- wherein M is the non-oxygen element and m is 1 or 2;
- n represents a number of 2 or 3, and
- MmOn is selected from the group consisting of Sc2O3, Y2O3, LnO2, ZrO2, TiO2,
- SiO2, and Al2O3;
- the metal hydride is AeH2,
- wherein Ae is an alkaline earth metal selected from the group consisting of Mg, Ca, Ba, and Sr;
- and
- the metal oxyhydride is a metal oxyhydride represented by general formula (1),
- AerMpOq-xHy (1)
- wherein Ae is at least one alkaline earth metal selected from the group consisting of Mg, Ca, Ba, and Sr;
- M is a non-oxygen element selected from the group consisting of Sc, Y, Ln, Zr, Ti, Si, and Al;
- r is 1 or 2;
- p is 1 or 2;
- q is 3 or 4;
- x represents a number expressed by 0.1≤x≤3.0;
- and y represents a number expressed by 0.2≤y≤3.0.
Dependencies are inferred from the claim text.