“…At the heart of this study, we have bibliometric analysis as a fundamental tool to determine the number of scientific productions in a clear and detailed way, an accessible alternative to collecting and evaluating these data. 42–48 Thus, this analysis covers authors, citations, journals, institutions, and other emerging scientific productions in blue hydrogen production. Therefore, to carry out the bibliometric analysis, we have as a crucial part of this study the use of the database obtained through the publications gathered in the collection of the Web of Science website, currently owned by Clarivate Analytics, which has around 74.8 million academic productions, according to 2020 data.…”