98/01245 Carbonization and graphitization behavior of iodine-treated coal tar pitch: Kajiura, H. et al. Carbon, 1997, 35, (2), 169–174
- Publisher
- Elsevier Science
- Year
- 1998
- Weight
- 198 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0140-6701
No coin nor oath required. For personal study only.
✦ Synopsis
A study conducted for coal conversion to Cz-C4 hydrocarbons in a twostage reactor system is presented. At 440°C in a stirred batch autoclave using Tetralin as the hydrogen donor solvent, coal was converted to liquids. The liquids produced were separated from the unreacted coal and ash by filtration. The liquids were then fed into a second stage fixed bed reactor containing sulfided Ni-MolAlzOs and SiOz-A1203 catalyst. The liquids were hydrocracked on the dual-functional catalyst giving high yields of Cz-C4 hydrocarbons at 1800 psig and 425-500°C. Reaction mechanisms of conversion of coal derived liquids to Cz-C4 hydrocarbons are presented and the kinetic parameters of the conversion of coal liquids to gases were determined. The activation energy was determined to be 23.9 Kcabmol and the rate appears to be controlled by the cracking reactions involving C-C bonds.