DRIFT spectroscopic characterization of coal samples modified by chemical treatments
Nosyrev, IE; Gruber, R; Cagniant, D; Krzton, A; Pajak, J; Stefanova, MD; Grishchuk, S
| HERO ID | 3577055 |
|---|---|
| In Press | No |
| Year | 1996 |
| Title | DRIFT spectroscopic characterization of coal samples modified by chemical treatments |
| Authors | Nosyrev, IE; Gruber, R; Cagniant, D; Krzton, A; Pajak, J; Stefanova, MD; Grishchuk, S |
| Journal | Fuel |
| Volume | 75 |
| Issue | 13 |
| Page Numbers | 1549-1556 |
| Abstract | The modifications afforded by several chemical treatments to the main functional groups of a bituminous coal vv ere characterized by diffuse reflectance infrared spectroscopy. The starting materials were the polyanions and potassium coal adducts obtained from the parent coal, treated with potassium according to the Sternberg and Lazarov reactions. The results show the differences in the reactive sites involved in these reactions and in the behaviour of these sites during protonation or alkylation. Some of the typical functional groups introduced (or modified) can be active acceptor sites during hydrogen transfer from tetralin at low temperature (315 degrees C) in conditions avoiding thermal bond cleavage. Taking into account the semiquantitative results of the i.r. analysis, the participation of several active sites in the total hydrogen transfer was estimated, indicating the role of quinonic, aromatic and alkyl groups. Copyright (C) 1996 Elsevier Science Ltd. |
| Doi | 10.1016/0016-2361(96)00085-3 |
| Wosid | WOS:A1996VP99900010 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | coal; chemical modification; DRIFT spectroscopy |