Highly efficient subnanometer Ru-based catalyst for ammonia synthesis <i>via</i> an associative mechanism

Yanliang Zhou; Qianjin Sai; Zhenni Tan; Congying Wang; Xiuyun Wang; Bingyu Lin; Jun Ni; Jianxin Lin; Lilong Jiang

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Highly efficient subnanometer Ru-based catalyst for ammonia synthesis via an associative mechanism

Updated：2026-01-06

- Highly efficient subnanometer Ru-based catalyst for ammonia synthesis via an associative mechanism
- Chinese Journal of Chemical Engineering Vol. 43, Issue 3, Pages: 177-184(2022)
- Affiliations：
  
  National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University,Fuzhou,China,350002
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2022
- Accepted：
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an associative mechanism[J]. 中国化学工程学报, 2022, 43(3): 177-184.
DOI：

an associative mechanism[J]. 中国化学工程学报, 2022, 43(3): 177-184. DOI：

摘要

Abstract

The industrial manufacture of ammonia (NH

) using Fe-based catalyst works under rigorous conditions. For the goal of carbon-neutrality

it is highly desired to develop advanced catalyst for NH

synthesis at mild conditions to reduce energy consumption and CO

emissions. However

the main challenge of NH

synthesis at mild conditions lies in the dissociation of steady NN triple bond. In this work

we report the design of subnanometer Ru clusters (0.8 nm) anchored on the hollow N-doped carbon spheres catalyst (Ru-SNCs)

which effectively promotes the NH

synthesis at mild conditions

via

an associative route. The NH

synthesis rate over Ru-SNCs (0.49% (mass) Ru) reaches up to 11.7 mmol NH

·(g cat)

-1

·h

-1

at 400 ℃ and 3 MPa

which is superior to that of 8.3 mmol NH

·(g cat)

-1

·h

-1

over Ru nanoparticle catalyst (1.20% (mass) Ru). Various characterizations show that the N

species are the main intermediates for NH

synthesis on Ru-SNCs catalyst. It demonstrates that Ru-SNCs catalyst can follow an associative route for N

activation

which circumvents the direct dissociation of N

and results in highly efficient NH

synthesis at mild conditions.

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Related Institution

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School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing)

⁰

Highly efficient subnanometer Ru-based catalyst for ammonia synthesis via an associative mechanism

DOI：

摘要

Abstract

关键词

Keywords

references