(US5416056-A)      Mfr. of microporous activated C comprises: (i) an activation stage comprising forming a blend of a lignocellulose with H3PO4; carbonising the first blend at 150-590 deg.C; and water washing the carbonised material; and water washing the carbonised material; and (ii) an activation stage comprising forming a second blend of carbonised material and a KOH soln.; activating the blend at 650-980 deg.C; and water washing and drying the microporous activated C prod. Activated C prod. comprises greater than 80 vol.% total pore vol. comprising pores of less than 20 Angstrom width and greater than 95 vol.% total pore vol. comprising pores of less than 50 Angstrom width.    Pref. microporous activated C comprises greater than 50% total pore vol. comprising pores of less than 16 Angstroms width and greater than 95% total pore vol. comprising pores of less than 50 Angstrom width.    USE/ADVANTAGE -   Used for the prodn. of activated C for adsorption of gases, e.g. natural gas. High storage capacity.    (JP7232908-A)      Microporous activated carbon is derived from lignocellulose material and has at least 50% pore volume in pores of 8-20 and more than 95% pore volume in pores of less than 50. Also claimed are (1) mfr. of a microporous activated carbon by mixing a precursor with alkali soln. at 0.5-5:1 dry wt. ratio, drying to below 25 wt.% moisture, heating at 650-1100C, acid washing, and drying; and (2) storage of hydrocarbon fuel by passing it into a container which contains activated carbon of the specified pore size distribution.    ADVANTAGE -   Better adsorption properties, e.g. for methane, than that produced by activation using other agents such as phosphoric acid or zinc chloride.    (JP2735491-B2)      Microporous activated carbon is derived from lignocellulose material and has at least 50% pore volume in pores of 8-20 and more than 95% pore volume in pores of less than 50. Also claimed are (1) mfr. of a microporous activated carbon by mixing a precursor with alkali soln. at 0.5-5:1 dry wt. ratio, drying to below 25 wt.% moisture, heating at 650-1100C, acid washing, and drying; and (2) storage of hydrocarbon fuel by passing it into a container which contains activated carbon of the specified pore size distribution.    ADVANTAGE -   Better adsorption properties, e.g. for methane, than that produced by activation using other agents such as phosphoric acid or zinc chloride.    (EP649815-B1)      Microporous activated carbon is derived from lignocellulose material and has at least 50% pore volume in pores of 8-20 and more than 95% pore volume in pores of less than 50. Also claimed are (1) mfr. of a microporous activated carbon by mixing a precursor with alkali soln. at 0.5-5:1 dry wt. ratio, drying to below 25 wt.% moisture, heating at 650-1100C, acid washing, and drying; and (2) storage of hydrocarbon fuel by passing it into a container which contains activated carbon of the specified pore size distribution.    ADVANTAGE -   Better adsorption properties, e.g. for methane, than that produced by activation using other agents such as phosphoric acid or zinc chloride.    (US5965483-A)      Microporous activated carbon is derived from lignocellulose material and has at least 50% pore volume in pores of 8-20 and more than 95% pore volume in pores of less than 50. Also claimed are (1) mfr. of a microporous activated carbon by mixing a precursor with alkali soln. at 0.5-5:1 dry wt. ratio, drying to below 25 wt.% moisture, heating at 650-1100C, acid washing, and drying; and (2) storage of hydrocarbon fuel by passing it into a container which contains activated carbon of the specified pore size distribution.    ADVANTAGE -   Better adsorption properties, e.g. for methane, than that produced by activation using other agents such as phosphoric acid or zinc chloride.    (TW382003-A)      Microporous activated carbon is derived from lignocellulose material and has at least 50% pore volume in pores of 8-20 and more than 95% pore volume in pores of less than 50. Also claimed are (1) mfr. of a microporous activated carbon by mixing a precursor with alkali soln. at 0.5-5:1 dry wt. ratio, drying to below 25 wt.% moisture, heating at 650-1100C, acid washing, and drying; and (2) storage of hydrocarbon fuel by passing it into a container which contains activated carbon of the specified pore size distribution.    ADVANTAGE -   Better adsorption properties, e.g. for methane, than that produced by activation using other agents such as phosphoric acid or zinc chloride.