Activation of anthracite: Using carbon dioxide versus air

✍ Scribed by G.A.R. Bessant; P.L. Walker Jr.

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 615 KB
• Volume: 32
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(94)90226-7

✦ Synopsis

Devolatilized (950°C) anthracite was activated in 0.1 MPa CO, at 950°C and 0.1 MPa air at 425°C and 450°C. At comparable gasification rates and carbon burn-offs in CO, and air, larger surface areas and pore volumes were developed by activation in CO,. This is attributed foremost to less uniform activation through the anthracite particles when gasification takes place in air. Also, the formation of a stable oxygen complex, concurrent with carbon gasification in air, may reduce the efficiency of anthracite activation.