Bipolar pulsed discharge reforming methanol solution for hydrogen production: The effects of discharge mode and polarity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F25%3A00645037" target="_blank" >RIV/61389021:_____/25:00645037 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2213343725018020?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2213343725018020?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2025.117106" target="_blank" >10.1016/j.jece.2025.117106</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bipolar pulsed discharge reforming methanol solution for hydrogen production: The effects of discharge mode and polarity

Popis výsledku v původním jazyce

Plasma-enabled methanol reforming for hydrogen production has attracted widespread attention due to its advantages, such as rapid startup, simple setup, and high hydrogen yield. In this work, liquid phase pulsed discharge plasma was employed for the direct decomposition of methanol to produce hydrogen, and the effects of discharge form and polarity were systematically investigated. A plate-pinhole-plate reactor was designed to initiate both positive and negative pulsed discharge simultaneously. Four types of discharge modes were achieved by adjusting the electrode distance. As the electrode distance decreased, the pulse width also decreased and the discharge mode gradually switched from dual corona discharge to dual spark discharge. By comparing the streamer length, streamer velocity and current rise rate of the four modes, it is analyzed that the dual spark discharge mode has better discharge plasma performance. In the dual spark discharge mode, the peak current and the current rise rate reached their maxima, which were 448A and 1947.8A/μs, respectively. The dual spark discharge mode is proved to be more favorable to hydrogen production from methanol by liquid phase discharge, with an optimal hydrogen selectivity of 90.2% and a hydrogen production efficiency of 3.84mmol(H2)/kJ. In addition, the rotational temperature and electron density were also investigated, which contributed to the superior hydrogen production performance under the dual spark discharge mode compared to other modes. This study provides valuable insights for optimizing discharge modes and discharge polarity to improve the hydrogen production efficiency in liquid phase discharge.

Název v anglickém jazyce

Bipolar pulsed discharge reforming methanol solution for hydrogen production: The effects of discharge mode and polarity

Popis výsledku anglicky

Plasma-enabled methanol reforming for hydrogen production has attracted widespread attention due to its advantages, such as rapid startup, simple setup, and high hydrogen yield. In this work, liquid phase pulsed discharge plasma was employed for the direct decomposition of methanol to produce hydrogen, and the effects of discharge form and polarity were systematically investigated. A plate-pinhole-plate reactor was designed to initiate both positive and negative pulsed discharge simultaneously. Four types of discharge modes were achieved by adjusting the electrode distance. As the electrode distance decreased, the pulse width also decreased and the discharge mode gradually switched from dual corona discharge to dual spark discharge. By comparing the streamer length, streamer velocity and current rise rate of the four modes, it is analyzed that the dual spark discharge mode has better discharge plasma performance. In the dual spark discharge mode, the peak current and the current rise rate reached their maxima, which were 448A and 1947.8A/μs, respectively. The dual spark discharge mode is proved to be more favorable to hydrogen production from methanol by liquid phase discharge, with an optimal hydrogen selectivity of 90.2% and a hydrogen production efficiency of 3.84mmol(H2)/kJ. In addition, the rotational temperature and electron density were also investigated, which contributed to the superior hydrogen production performance under the dual spark discharge mode compared to other modes. This study provides valuable insights for optimizing discharge modes and discharge polarity to improve the hydrogen production efficiency in liquid phase discharge.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Environmental Chemical Engineering

ISSN

2213-2929

e-ISSN

2213-3437

Svazek periodika

13

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

117106

Kód UT WoS článku

001495251900016

EID výsledku v databázi Scopus

2-s2.0-105006881949