In:
Small, Wiley, Vol. 17, No. 46 ( 2021-11)
Abstract:
Efficient catalytic elimination of hydrogen sulfide (H 2 S) with high activity and durability in nature gas and blast‐furnace gas is very critical for both fundamental catalytic research and applied environmental chemistry. Herein, atomically dispersed Co atom catalysts with Co–N 4 sites that can transform H 2 S into S with conversion rate of ≈100% are designed and prepared. The representative 4Co‐N/NC achieves a sulfur yield of nearly 100% and TOF (Co) of 869 h –1 at 180 °C. Importantly, remarkable long‐term durability is achieved as well, with no obvious loss of catalytic activity in the run of 460 h, outperforming most of the reported catalysts. The short bond length and strong cooperation of Co–N are beneficial to improve the structural stability of the Co–N 4 centers, and significantly enhanced resistance of water and sulfation over single‐atom Co‐catalyst. The present mechanism involves the stepwise hydrogen transfer process via the adsorbed *HOO and *HS intermediates.
Type of Medium:
Online Resource
ISSN:
1613-6810
,
1613-6829
DOI:
10.1002/smll.202104939
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
2168935-0
Permalink