Hydrogen coal storage

Hydrogen Production and Storage

■ This paper offers an overview of the technologies for hydrogen production. The technologies discussed are reforming of natural gas; gasification of coal and biomass; and the splitting of water by water-electrolysis, photo-electrolysis, photo-biological production and hightemperature decomposition. For all hydrogen production processes, there is a need for significant improvement in plant effi...

Hydrogen Cyanide Produced from Coal and Ammonia

Hydrogen c y a n i d e (HCN) h a s been one of t h e c o u n t r y ' s s t r o n g e s t growth pe t rochemica ls i n r e c e n t y e a r s . U . S . p r o d u c t i o n h a s i n c r e a s e d from 174 m i l l i o n pounds i n 1960 to 350 m i l l i o n pounds i n 1964, a 1 0 0 p e r c e n t i n c r e a s e over t h e 4-year p e r i o d . The growth of p r o d u c t i o n of hydrogen c y a n i ...

Composite Hydrogen Storage Cylinders

Hydrogen storage in molecular compounds.

At low temperature (T) and high pressure (P), gas molecules can be held in ice cages to form crystalline molecular compounds that may have application for energy storage. We synthesized a hydrogen clathrate hydrate, H(2)(H(2)O)(2), that holds 50 g/liter hydrogen by volume or 5.3 wt %. The clathrate, synthesized at 200-300 MPa and 240-249 K, can be preserved to ambient P at 77 K. The stored hydr...

Hydrogen Storage and Its Limitations

The Electrochemical Society Interface • Fall 2004 ydrogen storage is a crucial step for providing a ready supply of hydrogen fuel to an end use, such as a car, as it is considered by many to be the most technically challenging aspect of achieving a hydrogen-based economy. Current hydrogen storage materials or systems are still far short of meeting target goals set for either 2010 or 2015. Two k...