Process for making activated carbon with control of metal ion co

Details Process for making activated carbon with control of metal ion co Process for making activated carbon with control of metal ion co

1981-06-04

1982-11-30

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252425, C01B 3112, B01J 2020, B01J 2118

Patent

active

RE0310930

ABSTRACT:
A process for improvement of wood-base active carbon made in the presence of phosphoric acid is disclosed herein. The improvement comprises controlling the amount of dissolved salts of the group sodium, potassium, calcium and magnesium in the process acid to provide a metal ion concentration from 0.5% to 2.0% by weight. The controlled addition of these metal salts improves the adsorptivity for fuel vapors and the decolorizing activity of the carbon.

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