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author:

Zhou, Yanliang (Zhou, Yanliang.) [1] (Scholars:周岩良) | Sai, Qianjin (Sai, Qianjin.) [2] | Tan, Zhenni (Tan, Zhenni.) [3] | Wang, Congying (Wang, Congying.) [4] | Wang, Xiuyun (Wang, Xiuyun.) [5] (Scholars:王秀云) | Lin, Bingyu (Lin, Bingyu.) [6] (Scholars:林炳裕) | Ni, Jun (Ni, Jun.) [7] (Scholars:倪军) | Lin, Jianxin (Lin, Jianxin.) [8] (Scholars:林建新) | Jiang, Lilong (Jiang, Lilong.) [9] (Scholars:江莉龙)

Indexed by:

EI SCIE CSCD

Abstract:

The industrial manufacture of ammonia (NH3) using Fe-based catalyst works under rigorous conditions. For the goal of carbon-neutrality, it is highly desired to develop advanced catalyst for NH3 synthesis at mild conditions to reduce energy consumption and CO2 emissions. However, the main challenge of NH3 synthesis at mild conditions lies in the dissociation of steady N N 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 NH3 synthesis at mild conditions via an associative route. The NH3 synthesis rate over Ru-SNCs (0.49% (mass) Ru) reaches up to 11.7 mmol NH3 (g cat)(-)(1).h(-1) at 400 degrees C and 3 MPa, which is superior to that of 8.3 mmol NH3.(g cat)(-1).h(-1) over Ru nanoparticle catalyst (1.20% (mass) Ru). Various characterizations show that the N2H4 species are the main intermediates for NH3 synthesis on Ru-SNCs catalyst. It demonstrates that Ru-SNCs catalyst can follow an associative route for N-2 activation, which circumvents the direct dissociation of N-2 and results in highly efficient NH3 synthesis at mild conditions. (C) 2022 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.

Keyword:

Ammonia synthesis Associative route Catalysis Subnanometer Ru clusters Sustainability

Community:

  • [ 1 ] [Zhou, Yanliang]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 2 ] [Sai, Qianjin]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 3 ] [Tan, Zhenni]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 4 ] [Wang, Congying]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 5 ] [Wang, Xiuyun]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 6 ] [Lin, Bingyu]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 7 ] [Ni, Jun]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 8 ] [Lin, Jianxin]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 9 ] [Jiang, Lilong]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China

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Source :

CHINESE JOURNAL OF CHEMICAL ENGINEERING

ISSN: 1004-9541

CN: 11-3270/TQ

Year: 2022

Volume: 43

Page: 177-184

3 . 8

JCR@2022

3 . 7 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:74

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 8

SCOPUS Cited Count: 8

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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