SCANNING ELECTRON-MICROSCOPY OF TREATED BITUMINOUS COALS

HUAI H., GAINES A., FLINT C.

FUEL PROCESSING TECHNOLOGY, vol.32, pp.25-37, 1992 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32
  • Publication Date: 1992
  • Doi Number: 10.1016/0378-3820(92)90004-a
  • Journal Name: FUEL PROCESSING TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.25-37
  • Middle East Technical University Affiliated: No

Abstract

Scanning electron microscopy of particles of three bituminous coals (78.5% C, 81.7% C and 89.9% C d.a.f.) which had been treated with pyridine, methanol, bromine, air, sulfuric acid, ammonia and alkylating agents showed that the reagents produced significant changes in the morphology of the particles. The particles cracked and disintegrated in ways which appear to be characteristic of the disruption of hydrogen bonding, the volume and thermal changes accompanying local reactions and of the breakage of C-C bonds.