“…It thus refers to the next theme that was highlighted, as the most central ones, in Figure 7 of this study that is carbon emission, which is recognized as a global issue, and, for this research, which focuses on green hydrogen, it is emphasized that, for each fuel with high carbon emission factor, if it can be replaced by hydrogen, then there will be a reduction of carbon emissions (Dong, Yang, Yu, Daiyan & Amal, 2022), which is an imperative challenge in this century (Du et al, 2022), corroborating the enlargement and the robustness of clean energy (Yan, He & Fan, 2023). In short, the demand for clean fuels is driven by hydrogen processes and technologies, and is predominant in order to be able to flow innovative aspects into a lowcarbon future, and consequently to achieve sustainable development based in particular on green hydrogen (Genovese et al, 2020;Oliveira, Beswick & Yan, 2021;Guarieiro et al, 2022;Camargo et al, 2023).…”