96/03772 Changes of macromolecular structure of coals in the processes of reduction and reductive alkylation in liquid ammonia
- Publisher
- Elsevier Science
- Year
- 1996
- Weight
- 183 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0140-6701
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The reaction of non-reductive ethylation of a coal anion generated in the presence of a strong base (sodium and/or potassium amides) in liquid ammonia is an efficient method for coal solubilization. Under the reaction conditions used, over 50 wt y0 of vitrinites separated from carboniferous bitumino
The products of reduction and reductive alkylation of five demineralized coals run in a system of potassium/ liquid ammonia were subject to extraction by methylene chloride and n-pentane. The paper reports infrared and nuclear magnetic resonance (n.m.r.) characteristics of the extracts and the resul
Two Polish coals and an anthracite were subjected to four-stage reduction in potassium/liquid ammonia. After each stage, solubility of the products in methylene chloride was studied. Extraction yield was found to increase with increasing number of stages. The highest yield of transformation to solub