Activated carbon by treatment of lignites with potassium...

C - Chemistry – Metallurgy – 01 – B

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C01B 31/12 (2006.01) B01D 53/02 (2006.01) B01J 20/04 (2006.01) B01J 20/20 (2006.01)

Patent

CA 2138376

Activated carbons for the adsorption of vapors, gases and liquids for a variety of appli- cations prepared from a dry lignite or brown coal treated with at least one of potassium hy- droxide and/or salts thereof and/or sodium hydroxide or salts thereof which are charred and thereafter activated. These activated carbons have increased hexane working capacity of at least 5.4 %.

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