Porous texture of activated carbons modified with carbohydrates

✍ Scribed by R. Torregrosa-Maciá; J.M. Martín-Martínez; M.C. Mittelmeijer-Hazeleger

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 646 KB
• Volume: 35
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/s0008-6223(97)83724-4

✦ Synopsis

A modification of the porous texture of activated carbons to develop meso-and macroporosity is described. Three gas-activated carbons of different origin, have been modified by impregnation with two carbon compounds (n-glucose and o-glucosamine) from aqueous solution followed by carbonization at 1173 K and activation with CO,. The most important results of this procedure are (1) the development of meso-and macroporosity depends on the mesopore size distribution of the original activated carbon;

(2) the gasification rates are different for each impregnated carbon in the activation step, and (3) there was no or little development of the original microporosity.