Selection and preparation of activated carbon for fuel gas stora

Details Selection and preparation of activated carbon for fuel gas stora Selection and preparation of activated carbon for fuel gas stora

1989-09-19

1990-10-02

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62462, F25J 302

Patent

active

049604503

ABSTRACT:
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.

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Estimation of the Point Zero Charge of Simple Oxides by Mass Titration Noh et al., Journal of Colloid and Interface Science, vol. 130 pp. 157-164 1989.

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