Transition-metal-supporting intermetallic compound, supported metallic catalyst, and ammonia producing method
AssigneesJapan Science and Technology Agency, Tokyo Institute of Technology
InventorsHideo Hosono, Masaaki Kitano, Tomofumi Tada, Toshiharu Yokoyama, Yoshitake Toda, Yangfan Lu, Jiang Li
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Abstract
An electride, which is more stable and can be more easily obtained, is provided or is made available, and as a result, a catalyst particularly useful for chemical synthesis, in which the electride is particularly used, is provided. A transition metal-supporting intermetallic compound having a transition metal supported on an intermetallic compound represented by the following formula (1): A5X3 . . . (1) wherein A represents a rare earth element, and X represents Si or Ge.
Claims8
A transition metal-supporting intermetallic compound having a transition metal supported on an intermetallic compound represented by the following formula (1):
- A5X3 (1)
- wherein:
- A represents a rare earth element;
- and
- X represents Si or Ge,
- wherein a ratio of the transition metal to the intermetallic compound is 0.1% by mass or more and 30% by mass or less.
A method for producing ammonia, the method comprising contacting a supported metallic catalyst with a mixed gas of hydrogen and nitrogen,
- wherein the supported metallic catalyst comprises a transition metal-supporting intermetallic compound, and
- the transition metal-supporting intermetallic compound has a transition metal supported on an intermetallic compound represented by the following formula (1):
- A5X3 (1),
- wherein:
- A represents a rare earth element;
- and
- X represents Si or Ge.
Dependencies are inferred from the claim text.