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- Title
Pulsed laser induced plasma and thermal effects on molybdenum carbide for dry reforming of methane.
- Authors
Li, Yue; Liu, Xingwu; Wu, Tong; Zhang, Xiangzhou; Han, Hecheng; Liu, Xiaoyu; Chen, Yuke; Tang, Zhenfei; Liu, Zhen; Zhang, Yuhai; Liu, Hong; Zhao, Lili; Ma, Ding; Zhou, Weijia
- Abstract
Dry reforming of methane (DRM) is a highly endothermic process, with its development hindered by the harsh thermocatalytic conditions required. We propose an innovative DRM approach utilizing a 16 W pulsed laser in combination with a cost-effective Mo2C catalyst, enabling DRM under milder conditions. The pulsed laser serves a dual function by inducing localized high temperatures and generating *CH plasma on the Mo2C surface. This activates CH4 and CO2, significantly accelerating the DRM reaction. Notably, the laser directly generates *CH plasma from CH4 through thermionic emission and cascade ionization, bypassing the traditional step-by-step dehydrogenation process and eliminating the rate-limiting step of methane cracking. This method maintains a carbon-oxygen balanced environment, thus preventing the deactivation of the Mo2C catalyst due to CO2 oxidation. The laser-catalytic DRM achieves high yields of H2 (14300.8 mmol h−1 g−1) and CO (14949.9 mmol h−1 g−1) with satisfactory energy efficiency (0.98 mmol kJ−1), providing a promising alternative for high-energy-consuming catalytic systems. Dry reforming of methane (DRM) is a highly endothermic process, often limited by the severe thermocatalytic conditions it demands. Here the authors introduce a novel DRM method that employs a 16 W pulsed laser along with a cost-effective Mo2C catalyst, allowing DRM to proceed under milder conditions.
- Subjects
LASER plasmas; THERMAL plasmas; PULSED lasers; LASER-induced breakdown spectroscopy; METHANE; MOLYBDENUM; LASER pulses
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-49771-3