Kinetics of conversion of tetralin during hydrogenation of coal
β Scribed by Hendrik G.J. Potgieter
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 339 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0016-2361
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β¦ Synopsis
Tetralin has been considered a reasonably good hydrogen donor for the hydrogenation of coal, but in the literature little attention has been given to the kinetics of its conversion. In this paper it is suggested that the conversion of tetralin, mainly to naphthalene, may be either a reversible or a non-reversible reaction depending on the catalyst employed. It is further concluded that stannous chloride, though considered one of the best coal hydrogenation catalysts, is inferior to cobalt oxide when the side reaction tetralin+ decahydronaphthalenes and the rate of dehydrogenation of tetralin are considered.
π SIMILAR VOLUMES
SnCl,catalysed coal hydroliquefaction. The similarity in the dispersion patterns of ZnCl, and SnCl, upon impregnation from solution (Figures I and 2) suggests that the divergent tar production trends caused by these two Lewis acids' (see Tab/e I) must be explained by differing reaction mechanisms. S
Liquefaction of a low rank coal by tetralin was carried out in batch autoclave experiments. Two-stage heating, i.e. first, at the temperature of 340 or 380Β°C which favours a non-radical mechanism of H-transfer, and next, at 440Β°C was applied as well as one-stage heating exclusively at 440Β°C. Convers