Kinetics and Mechanisms of NO(x) - Char Reduction.
Most industrially important carbons are produced from naturally occurring materials such as coal, oil, peat or wood by some form of thermal process. Chars are obtained from those natural materials as a residue after removal of the volatile matter. Chars (prepared from coal or other organic precursors) are non-graphitizable carbons, meaning that they cannot be transformed into graphitic carbon. Chars are comprised of elementary crystallites in parallel layers which are randomly oriented with respect to each other and are crosslinked together through weak bonds. Voids between crystallites determine the porosity of the char, and this plays an important role in char gasification behavior. Chars usually contain a pore size distribution, in which the larger macro- and mesopores play an important role in transport of reactants into the much smaller micropores, in which most gasification and combustion take place. Therefore, the effectiveness of micropores in gasification depends heavily on the numbers of meso- and macropores.
- Research Organization:
- Brown Univ., Providence, RI (United States). Div. of Engineering
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- FG22-94PC94218
- OSTI ID:
- 599009
- Report Number(s):
- DOE/PC/94218-T4; ON: DE98051693
- Resource Relation:
- Other Information: PBD: [Jun 1997]
- Country of Publication:
- United States
- Language:
- English
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Kinetics and Mechanisms of NO(x) - Char Reduction.
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