Using alkali metals to control reactivity and porosity during physical activation of demineralised kraft lignin

• Published in: Carbon (New York) Vol. 47; no. 4; pp. 1012 - 1017
• Main Authors: Suhas, Carrott, P.J.M., Carrott, M.M.L. Ribeiro
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.04.2009; Elsevier
• Subjects: Activated; Activation; Alkali metals; Carbon; Carbon dioxide; Chemistry; Colloidal state and disperse state; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Fullerenes and related materials; diamonds, graphite; General and physical chemistry; Impregnation; Materials science; Physics; Porosity; Porous materials; Specific materials; Widening; Lignin; Micropore; Porous materials; Alkali metals; Activation; Mesoporosity; Chemical reduction; Impregnation; Microporosity; Pore; Porosity; Chemical reactivity; Structure; Low temperature

Demineralised kraft lignin was impregnated with between 6.2% and 50% NaCl or KCl and physically activated in CO 2 at 750 °C. The results presented show that a considerable reduction in activation time even at a comparatively low activation temperature could be achieved, particularly when using KCl....