Journal
CHEMICAL ENGINEERING SCIENCE
Volume 229, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2020.116164
Keywords
Mesoscience; Principle of compromise in competition; Molecular thermodynamic model; Fusion enthalpy; Direct H2O2 synthesis
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Funding
- National Natural Science Foundation of China [91934302]
- Kempe Foundation in Sweden
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This study summarized the research progress of supported nano-metal catalysts, addressing the trade-off between activity and stability with the principle of compromise in competition. By focusing on direct H2O2 synthesis as a typical case, mechanism A (activity) and mechanism B (stability) were identified and discussed.
Supported nano-metal catalysts are widely used in industrial processes. There is a trade-off between the activity and stability from mesoscale, which can be effectively tackled with the principle of compromise in competition (mechanisms A and B). To apply mesoscience methodology in this specific area, this work summarized research progress, where direct H2O2 synthesis was chosen as a typical case to identify and represent mechanism A (activity) and mechanism B (stability). It was found that mechanism A has been widely studied, while mechanism B still cannot reflect explosion. Subsequently, reaction heat and fusion enthalpy were proposed to represent mechanism B in this work, and the molecular thermodynamic model was identified as an effective tool for the study. A corresponding framework for mechanism B was constructed and the progress in developing the model for this particular purpose was provided. Finally, perspectives were discussed based on the linear non-equilibrium thermodynamics. (C) 2020 Elsevier Ltd. All rights reserved.
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