公开(公告)号：US20210114005A1

公开(公告)日：2021-04-22

申请号：US17050313

申请日：2019-04-24

Applicant: THE UNIVERSITY OF WARWICK

Inventor： Shanwen Tao ,  John Humphreys

IPC: B01J27/24 ,  B01J23/755 ,  B01J23/745 ,  B01J23/10 ,  B01J23/78 ,  C01C1/04

Abstract: A composition for catalysis of a Haber-Bosch process comprises an anion vacant lattice and a Haber-Bosch catalyst (e.g. Fe Ru). Suitable anion vacant lattices include oxynitrides and oxides, which may be doped or undoped, including CeaMbO2-XNY (Formula III) M is one or more elements with a valence lower than +4. “a” and “b” are independently in the range 0.05 to 0.95, with the proviso that “a” and “b” together sum to 1 (approximately). X is greater than 0 and less than 2. Y is greater than zero and less than or equal to X. A process employing the composition produces ammonia.

公开(公告)号：US20240058800A1

公开(公告)日：2024-02-22

申请号：US18498026

申请日：2023-10-30

Applicant: THE UNIVERSITY OF WARWICK

Inventor： Shanwen Tao ,  John Humphreys

IPC: B01J27/24 ,  B01J23/10 ,  B01J23/745 ,  B01J23/755 ,  B01J23/78 ,  C01C1/04

CPC classification number: B01J27/24 ,  B01J23/10 ,  B01J23/745 ,  B01J23/755 ,  B01J23/78 ,  C01C1/0411

Abstract: A composition for catalysis of a Haber-Bosch process to produce ammonia; a process employing the composition and an anion vacant lattice for use in the process.
The composition comprises an anion vacant lattice and a Haber-Bosch catalyst (e.g. Fe or Ru). Suitable anion vacant lattices include oxynitrides and oxides, which may be doped or undoped, including


CeaMbO2-xNy  (Formula III)

M is one or more elements with a valence lower than 4. “a” and “b” are independently in the range 0.05 to 0.95, with the proviso that “a” and “b” together sum to 1 (approximately). X is greater than 0 and less than 2. Y is greater than zero and less than or equal to X.