公开(公告)号：US12297108B2

公开(公告)日：2025-05-13

申请号：US18538049

申请日：2023-12-13

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Katherine McCullough ,  Jochen Lauterbach

IPC: C01B3/04 ,  B01J8/00 ,  B01J23/46 ,  B01J23/58

Abstract: In general, disclosed herein are methods for forming hydrogen by use of an ammonia decomposition catalyst system. For instance, a method can include contacting a catalyst system with an ammonia source at a temperature of about 450° C. or lower. The catalyst systems can include a support material and a trimetallic catalyst component carried on the support material and within a reactor. Disclosed catalyst systems can decompose ammonia at relatively low temperatures and can provide an efficient and cost-effective route to utilization of ammonia as a carbon-free hydrogen storage and generation material.

公开(公告)号：US11891301B2

公开(公告)日：2024-02-06

申请号：US16376158

申请日：2019-04-05

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Katherine McCullough ,  Jochen Lauterbach

IPC: C01B3/04 ,  B01J23/46 ,  B01J23/58 ,  C01B3/50 ,  B01J19/24 ,  B01J8/00 ,  B01J8/02

CPC classification number: C01B3/047 ,  B01J8/009 ,  B01J19/2475 ,  B01J23/58 ,  C01B3/503 ,  B01J8/02 ,  B01J2208/00805 ,  B01J2208/024 ,  B01J2523/12 ,  B01J2523/13 ,  B01J2523/14 ,  B01J2523/15 ,  B01J2523/25 ,  B01J2523/36 ,  B01J2523/49 ,  B01J2523/821 ,  C01B2203/041 ,  C01B2203/1041 ,  C01B2203/1064 ,  C01B2203/1094

Abstract: Disclosed are ruthenium-based catalyst systems, hafnium-based catalyst systems, and yttrium-based catalyst systems for use in ammonia decomposition. Catalyst systems include ruthenium, hafnium, and/or yttrium optionally in combination with one or more additional metals that can be catalytic or catalyst promoters. Hafnium-based and yttrium-based catalyst systems can be free of ruthenium. The catalyst systems also include a support material. Disclosed catalyst systems can decompose ammonia at relatively low temperatures and can provide an efficient and cost-effective route to utilization of ammonia as a carbon-free hydrogen storage and generation material.