Hydrogen gas generation by water vapor dissociation in an Al/Al2O3 microchannel plasma device

Plasma;Hydrogen;Water Dissociation;optical emission spectra (OES)

Dai, Zhen

关键词: Plasma;    Hydrogen;    Water Dissociation;    optical emission spectra (OES);   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/78544/DAI-THESIS-2015.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

An aluminum/alumina (Al/Al2O3) microchannel plasma reactor is used to generate H2 with an energy efficiency of 2.5 % by dissociating water vapor in Ar at atmospheric pressure and room temperature. The value compares favorably to other plasma reactors reported in the literature, having reported energy efficiencies ≤ 2 %. Additionally, spectra of the Hα line are used to calculate electron densities, which are in the vicinity of 1.5 ± 0.2 × 1016 cm-3, while spectra of the OH(A-X) transition show a distinctly non-equilibrium population distribution in the OH(A2Σ+) state. Al/Al2O3 microchannel plasma device was shown to be efficient in water dissociation as compared with other plasma reactors recently reported in the literature.