The HNAT-Evall®

A New Instrument for Characterizing Hydrogen Generation from Rocks
For decades, Vinci-Technologies has accumulated extensive expertise  in rock characterization, particularly in the analysis of geochemical  source rocks using the Rock-Eval® device, which has now become the  globally recognized reference tool in petroleum geochemistry. Leveraging  its instrumental knowledge and a commitment to pioneering new energy  technologies, Vinci Technologies' teams are currently engaged in the  development of a groundbreaking instrument capable of measuring the  hydrogen generation potential from hydrogen-source rocks, whether they  are rich in iron or organic matter. This research and development effort  is driven by the growing demand in the emerging natural hydrogen  market. The Hnat-Eval device, once realized, will significantly enhance  our understanding of the processes involved in hydrogen production from  rocks.

The use of the Hnat-Eval instrument depends on the type of  rock being analyzed. First there is organic matter-rich samples. When  analyzing samples rich in organic matter, dry nitrogen is employed as  the carrier gas during pyrolysis. This choice of carrier gas is  specifically tailored to facilitate the pyrolytic decomposition of  organic compounds within the rock. Then comes iron-rich samples. In  contrast, when characterizing iron-rich samples, wet nitrogen is used as  the carrier gas. This carrier gas enables an oxido-reduction reaction  between the water content within the carrier gas and the iron  constituents present within the rock sample. This reaction is  fundamental to understanding the hydrogen generation potential of  iron-rich rocks.

The development of the Hnat-Eval instrument  represents a crucial step towards advancing our knowledge of hydrogen  generation from rocks, opening up exciting possibilities for the  utilization of natural hydrogen as a clean and sustainable energy source  in the future.