Wide angle X-ray scattering study of the layering in three of the Argonne premium coals

✍ Scribed by D.L. Wertz; J.L. Quin

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 251 KB
• Volume: 79
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/s0016-2361(00)00026-0

✦ Synopsis

Using wide angle X-ray scattering methods, the phase interference curves and the inter-layer structure curves of thee of the Argonne Premium Coals were measured. These analyses indicate the inter-layer structuring is rank dependent. In the sub-bituminous coal (Wyodak-Anderson), the number of layers in the average short-range structural domain is ca. 2.3, with the average inter-layer distance being 4.1 A ˚. For Pittsburgh #8 coal, the average inter-layer distance decreases slightly, to 4.0 A ˚, while the number of layers in the average short-range structural domain increases to ca. 3. For the more mature Pocahontas #3, a low-volatile bituminous coal, the inter-layer distance decreases to 3.7 A ˚, and the average short-range structural domain contains 4.5-5 layers.