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Synergy of DBD plasma and Fe-based catalyst in NH3 decomposition: Plasma enhancing adsorption step
Indexed by:期刊论文
First Author:Wang, Li
Correspondence Author:Guo, HC (reprint author), Dalian Univ Technol DUT, State Key Lab Fine Chem, Dalian 116024, Peoples R China.; Guo, HC (reprint author), Dalian Univ Technol DUT, Sch Chem Engn, Dalian 116024, Peoples R China.
Co-author:Yi, Yanhui,Guo, Yanjun,Zhao, Yue,Zhang, Jialiang,Guo, Hongchen
Date of Publication:2017-06-01
Journal:PLASMA PROCESSES AND POLYMERS
Included Journals:SCIE、EI
Volume:14
Issue:6,SI
ISSN No.:1612-8850
Key Words:adsorption step; ammonia decomposition; hydrogen energy; plasma-catalysis; synergistic effect
Abstract: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.