Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Free carbon containing
Patent
1993-10-25
1995-05-16
McFarlane, Anthony
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Free carbon containing
502426, 502427, C01B 3112, B01J 2020
Patent
active
054160561
ABSTRACT:
A two-stage process for chemical activation of lignocellulose-derived carbon is disclosed comprising a first activation stage of blending a lignocellulose material with phosphoric acid, carbonizing the blend at from about 300.degree. F. to about 1,100.degree. F. (about 150.degree.-590.degree. C.), and water washing the carbonized material and a second activation stage of blending the carbonized material with a potassium hydroxide solution, activating this blend at from about 1,200.degree. to about 1,800.degree. F. (about 650.degree.-980.degree. C.), and water washing and drying the microporous activated carbon product, which is characterized by greater than 50% of its total pore volume comprising pores of less than 16 .ANG. in width and greater than 80% of its total pore volume comprising pores of less than 20 .ANG. in width and greater than 95% of its total pore volume comprising pores of less than 50 .ANG. in width.
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McDaniel Terry B.
McFarlane Anthony
Reece IV Daniel B.
Schmalz Richard L.
Westvaco Corporation
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