Hydrogen Gas Transfer Experiments within Callovo- Oxfordian Clayrock

During the past few decades, clays have received more interest than other minerals [Bergaya et al., 2006]. This attention to clays is due to their common availability, their extraordinary properties and their heterogeneous composition. These materials present a wide range of porosities, principally micropores and mesopores and a laminated structure. No other group of inorganic materials shows such a wide range of reactivity and propensity for modification. This rock has been considered for many applications, for example the Callovo-Oxfordian (COx) clayrock [Gaucher et al., 2004] is investigated to be used as a host rock for French nuclear waste and alumina-pillared synthetic montmorillonites are studied for a new kind of hydrogen gas storage material for mobile applications [Gil et al., 2009]. Regarding nuclear waste storage, hydrogen gas is expected to develop from the corrosion processes of the waste containers.