Hydrogen-rich syngas production by liquid phase pulsed electrodeless discharge

Hydrogen-rich syngas produced from ethanol/water mixtures by pulsed electrodeless discharge is studied in this work. A plate-pinhole-plate device is used to achieve electrodeless discharge that positive and negative discharge can simultaneously generate in both sides of the pinhole. The study find that the gas production efficiency is higher when both sides are spark discharge. Among the produced gas, H-2, CO are the main components, which account for about 99%. Meanwhile, in order to acquire hydrogen-rich syngas with high yield, both high peak voltage and appropriate electrode distance are important. The reaction process is also researched by the spectral diagnosis. The results show that the generation of center dot H is the key for syngas production by pulsed electrodeless discharge that center dot H is not only the important substance for hydrogen production, but also affects the generation of center dot CH and center dot C-2 thereby determining the CO production. (C) 2020 Elsevier Ltd. All rights reserved.

Automated summary

This study investigates the production of hydrogen-rich syngas from ethanol/water mixtures using pulsed electrodeless discharge. The research has found that high peak voltage and appropriate electrode distance are crucial for achieving high yield and efficiency. The main components of the produced gas are H2 and CO, with H2 generation being a key factor influencing CO production.