One of the key challenges is the [storage and transportation]() of hydrogen due to its low density and high flammability. Efficient storage solutions, such as high-pressure tanks or [metal hydrides](), are essential to ensure safe handling. Additionally, the [selectivity and activity]() of catalysts need to be optimized to minimize hydrogen wastage and improve reaction efficiencies. Research is ongoing to develop more robust and effective catalysts that can operate under milder conditions and with higher selectivity.
