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Continuous synthesis of atomically dispersed Rh supported on MgAl2O4 using two-stage microreactor
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  • Qiangqiang Xue,
  • Binhang Yan,
  • Yujun Wang,
  • Guangsheng Luo
Qiangqiang Xue
Tsinghua University

Corresponding Author:[email protected]

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Binhang Yan
Tsinghua University
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Yujun Wang
Tsinghua University
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Guangsheng Luo
Tsinghua University
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Single-atom catalysts with optimal atom utilization and outstanding activity have penetrated the frontier of heterogeneous catalysis. However, the large-scale synthesis of this class of catalysts is still a bottleneck for their industrialization. Herein, we suggest a two-stage micro-dispersion approach to synthesize mesoporous MgAl2O4-supported atomically dispersed Rh, which is more competitive than the batch method for boosting the uniform dispersion of Rh. By increasing the Rh loading, single-atom catalysts (SACs, < 0.05wt%), single-atom catalysts + nanoparticle catalysts (0.05–0.17 wt%), and nanoparticle catalyst (NPCs, 0.17–1.10 wt%) were obtained. For n-octane steam reforming, the turnover frequency of the SAC (0.01 wt%) was approximately 30 times that of the NPC (1.10 wt%), while the Rh amount of the SAC was only 3% that of the NPC for the same fuel conversion. Under a high-temperature (750 ℃) steam atmosphere for 15 h, the hydrogen formation rate only declined from 25.1 to 23.8 mol/mol-C8H18.
22 Mar 2022Submitted to AIChE Journal
23 Mar 2022Submission Checks Completed
23 Mar 2022Assigned to Editor
25 Mar 2022Reviewer(s) Assigned
24 Apr 2022Editorial Decision: Revise Major
19 May 20221st Revision Received
25 May 2022Assigned to Editor
25 May 2022Submission Checks Completed
26 May 2022Reviewer(s) Assigned
20 Jun 2022Editorial Decision: Revise Minor
22 Jun 20222nd Revision Received
26 Jun 2022Submission Checks Completed
26 Jun 2022Assigned to Editor
28 Jun 2022Reviewer(s) Assigned
16 Jul 2022Editorial Decision: Accept