Plasma-assisted hydrogen generation: A mechanistic review

A review of hydrogen production technologies using plasma was presented especially with a view point of re-action mechanism. In the hydrogen production process to which plasma is applied, the method of plasma contributing to the reaction may vary depending on the type and characteristics of the feed. Heavy hydrocarbon, natural gas, biomass, ammonia, and water are presented as feeds that can be sources of hydrogen. Then, brief survey and discussions are presented for the studies producing hydrogen in each feed. The discussion presented includes how electronic/ionic and vibrational excitation contribute to the activation of the reaction, and a discussion on what should be considered in the design of plasma process for hydrogen generation in view point of energy usage and possible reaction mechanism.

Automated summary

This article reviews the technologies of hydrogen production using plasma, focusing on the reaction mechanism. The contributions of plasma to the reaction can vary depending on the type and characteristics of the feed. Various feeds including heavy hydrocarbon, natural gas, biomass, ammonia, and water are discussed for hydrogen production. The discussion includes the role of electronic/ionic and vibrational excitation in activating the reaction, as well as considerations for the design of plasma processes for hydrogen generation in terms of energy usage and reaction mechanism.