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Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
Published on: November 9, 2019
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Asymmetrically Steering Excited-State Reaction Channels for Ambient N 2 Catalytic Oxidation.
Jiabao Lv1,2, Pu Guo3, Shanzhi Liu1
1State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, Zhejiang 310027, China.
JACS Au
|September 26, 2025
Summary
This study introduces a novel method for controlling excited-state catalytic reactions by mixing Co3O4/Al2O3 with 13X zeolite. This approach enhances plasma-driven nitrogen oxidation efficiency by suppressing reverse reactions.
Area of Science:
- Heterogeneous Catalysis
- Plasma Chemistry
- Materials Science
Background:
- Controlling excited-state catalytic reactions is difficult due to simultaneous strengthening of forward and reverse reaction kinetics.
- Plasma-driven nitrogen (N2) oxidation is a key process but suffers from limited efficiency and selectivity.
Purpose of the Study:
- To develop a strategy for asymmetric regulation of reaction channels in excited-state catalysis.
- To enhance plasma-driven N2 oxidation efficiency by minimizing reverse reaction kinetics.
- To investigate the role of catalyst-zeolite mixtures in modulating reaction pathways.
Main Methods:
- Physical mixing of a model catalyst (Cobalt oxide on alumina, Co3O4/Al2O3) with 13X zeolite.
- Plasma-driven N2 oxidation experiments under ambient conditions.
- In situ characterization techniques and molecular dynamics simulations.
Main Results:
- The physical mixture selectively accelerated the diffusion of the product nitric oxide (NO) via Na+-mediated transport channels within the zeolite.
- This facilitated NO turnover on octahedral Co3+ active sites, unidirectionally shifting the reaction equilibrium.
- Achieved a >3-fold improvement in N2 conversion rate compared to conventional plasma-catalysis, surpassing thermochemical conversion at 1800 K.
Conclusions:
- The developed strategy effectively modulates heterogeneous catalytic reactions in the excited state by controlling product diffusion.
- This approach offers a pathway to significantly enhance the efficiency of plasma-driven N2 oxidation.
- Provides a new method for orderly controlling excited-state catalytic processes.
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