Although compressed natural gas represents a cleaner and more efficient fuel for vehicles,its volatile nature requires a reinforced, heavy tank that stores the gas at tall pressure and therefore limits vehicle design. Researchers at the University of Pittsburgh's Swanson School of Engineering are utilizing metal-biological frameworks (MOFs) to develop a new type of storage system that would adsorb the gas like a sponge and allow for more energy-efficient storage and use.
Source: phys.org