✦ LIBER ✦

Catalytic activity of calcium for lignite char gasification in various atmospheres

✍ Scribed by Angel Linares-Solano; Edwin J Hippo; Philip L Walker Jr.

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 432 KB
Volume: 65
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(86)90068-2

No coin nor oath required. For personal study only.

✦ Synopsis

Gasification rates of a Texas lignite char, having calcium contents varying from 1.1 to 12.9wt%, were measured in air, steam, CO,, and H,. Gasification rates increased rectilinearly with increase in calcium loading. The chemisorption of CO, at 298 K on the CaO present on the char surface was used to determine CaO particle dispersion. Knowing this dispersion, specific activities of calcium as a catalyst for the gasification reactions were calculated. The spread in specific activities in different atmospheres is large, it being a maximum when the char-air reaction is compared with the char -H, reaction. (

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