Journal
PLASMA PROCESSES AND POLYMERS
Volume 14, Issue 6, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.201600111
Keywords
adsorption step; ammonia decomposition; hydrogen energy; plasma-catalysis; synergistic effect
Funding
- Natural Science Foundation of China (NSFC) [20473016, 20673018, 21503032]
- China Postdoctoral Science Foundation [2016T90217, 2015M580220]
- State Key Laboratory of Fine Chemicals of Dalian University of Technology
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The synergy between catalyst and plasma has dramatically improved the efficiency of some plasma chemical processes. In this paper, the role of the electronically excited state NH3 (NH3*) in the synergy of a DBD plasma and a Fe-based catalyst for NH3 decomposition has been studied by in situ optical emission spectra diagnostics, as well as adsorption and desorption experiments. Results reveal that, the NH3* species could adsorb on the catalyst surface with higher adsorption capacity and stronger strength in comparison with ground-state NH3. The ammonia conversion increased by nearly 40% due to the contribution of NH3* species. Here, the acceleration of the surface adsorption step with excited reactants is proved to be another role of plasma in synergy with heterogeneous catalyst.
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