Aslphaltenes are difficult to characterize by any procedure that involves chromatography. In an attempt to obtain useful information on unfractionated asphaltenes and their structural relations to their parent coals, asphaltenes from a set of eight coals of hvA rank and different coalification histo
Research on the structural characteristics of vitrinite in different coal ranks
โ Scribed by Li, Wu; Zhu, Yanming; Chen, Shangbin; Zhou, You
- Book ID
- 122880403
- Publisher
- Elsevier Science
- Year
- 2013
- Tongue
- English
- Weight
- 482 KB
- Volume
- 107
- Category
- Article
- ISSN
- 0016-2361
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Results of detailed studies on molecular weights of products from reductive alkylation of high-rank vitrinite are reported. It is concluded that the macromolecular network of vitrinite from a Cretaceous bituminous coal is composed of relatively small units (no. av. mol. weight 600-700) which are pri
The reaction is descrihcd in detail and the results are presented 97102511 Identification of coal characteristics indicating problems of swelling during carbonization Edwards, 1. et rrl. &mm. Eur. Communities, /Rep./ EUR , 1997, (EUR 171.5(l), pp. 189. Some coals generate a very high internal pressu