Science Daily  May 26, 2023 Researchers at the State University of Pennsylvania found that coal may represent a potential way to store hydrogen gas. They analyzed eight types of coals from coalfields across the United States to better understand their sorption and diffusion potential, or how much hydrogen they can hold. All eight coals showed considerable sorption properties, with low-volatile bituminous coal from eastern Virginia and anthracite coal from eastern Pennsylvania performing the best in tests. Depleted coalbed methane reservoirs’ seams contain unconventional natural gas like methane and have become an important source of fossil fuel energy over the last […]