(US5385876-A)      Microporous carbon adsorbent material comrpises an inorganic matrix (IM0 and active carbon (AC) supported within IM which is a pillared, natural or synthetic clay in the form of layers spaced by pillars of inorganic material, selected to define slit like microporous interstices, molecularly engineered with a pore size corresponding to a given target adsorbate. AC is intercalated between the layers.    USE/ADVANTAGE -   For producing a adsorbents used as storage media or for filtering or membrane sepn. fuel cells, catalytic membranes for aerosol/particulate abatement, catalyst supports (e.g. for ammonia synthesis) for condutive polymers, dielectric materials, fuel cell electrodes is in medical treatments e.g. as selective scavengers of ingested poisons. They can be used to store H2 above cryogenic temps.    (JP8506048-W)      Microporous active carbon sorbent (I) comprises activated carbon (II) supported within an inorganic matrix (III) of pillared clay or pillared clay like material in the form of microscopic sheets sepd. from each other by pillars of suitable material (IV) defining slit-like interstices. (II) Is intercalated between the sheets of matrix (III).    (I) is obtd. by contacting (III) with organic polymer precursor (V) to fill interstices in (III) with (V) followed by carbonising.    Also claimed is (I) comprising microscopic sheets of (II) spaced apart to define therebetween to define slit-like micropores of a desired width. This is obtd. by removing the matrix after the carbonising stage.    (III) Is synthetic hydrotalcite or montmorillonite. (IV) is an organic anion or polyoxometallate. (V) Is a polystyrene-sulphonate anion.    USE/ADVANTAGE -   (I) Stores H2 for use as an energy source. Other utility is in membrane sepn., fuel cells, catalyst supports, fuel cell electrodes, poison scavenger in medical treatments, etc. Materials for prepn. are conventional. (I) Has uniform pore structure, high strength and is lightweight.    (EP681509-B1)      Microporous active carbon sorbent (I) comprises activated carbon (II) supported within an inorganic matrix (III) of pillared clay or pillared clay like material in the form of microscopic sheets sepd. from each other by pillars of suitable material (IV) defining slit-like interstices. (II) Is intercalated between the sheets of matrix (III).    (I) is obtd. by contacting (III) with organic polymer precursor (V) to fill interstices in (III) with (V) followed by carbonising.    Also claimed is (I) comprising microscopic sheets of (II) spaced apart to define therebetween to define slit-like micropores of a desired width. This is obtd. by removing the matrix after the carbonising stage.    (III) Is synthetic hydrotalcite or montmorillonite. (IV) is an organic anion or polyoxometallate. (V) Is a polystyrene-sulphonate anion.    USE/ADVANTAGE -   (I) Stores H2 for use as an energy source. Other utility is in membrane sepn., fuel cells, catalyst supports, fuel cell electrodes, poison scavenger in medical treatments, etc. Materials for prepn. are conventional. (I) Has uniform pore structure, high strength and is lightweight.