Chemical composition and toxicological activity of liquefaction materials derived from different feed coal ranks

Dependence of coal liquefaction behaviou

Dependence of coal liquefaction behaviour on coal characteristics. 7. Structural differences between coals of different rank and the asphaltenes derived from them

✍ Lawrence J. Shadle; Peter H. Given 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 884 KB

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