초록 ▼

Increasing the surface acidity of active carbons can lead to an increase in capacity for hydrogen adsorption. Increasing the surface basicity can facilitate methane adsorption. The treatment of carbons is most effective when the carbon source material is selected to have a low ash content i.e., belo

Increasing the surface acidity of active carbons can lead to an increase in capacity for hydrogen adsorption. Increasing the surface basicity can facilitate methane adsorption. The treatment of carbons is most effective when the carbon source material is selected to have a low ash content i.e., below about 3%, and where the ash consists predominantly of alkali metals alkali earth, with only minimal amounts of transition metals and silicon. The carbon is washed in water or acid and then oxidized, e.g. in a stream of oxygen and an inert gas at an elevated temperature.

대표청구항 ▼

A method of preparing an activated carbon for enhanced sorption of hydrogen or a hydrogen-containing gas, comprising the steps of selecting a source carbon material that has a low ash content on the order of 3% or less and whose ash content contains a relatively small silicon content on the order of

A method of preparing an activated carbon for enhanced sorption of hydrogen or a hydrogen-containing gas, comprising the steps of selecting a source carbon material that has a low ash content on the order of 3% or less and whose ash content contains a relatively small silicon content on the order of 1000 m3000 m