REFERENCES
- Artok , L. , Davis , A. , Mitchell , G. D. and Schobert , H. H. 1992 . Swelling pretreatment of coals for improved catalytic liquefaction . Fuel , 71 : 981
- Brenner , D. 1983 . In situ microscopic studies of the solvent-swelling of polished surfaces of coal . Fuel , 62 : 1347 – 1350 .
- Dryden , I. G. C. 1950 . Chemical constitution and reactions of coal . Fuel , 29 : 197 – 221 .
- Dryden , I. G. C. 1951 . Action of solvents on coals at lower temperatures—Mechanism of extraction of colas by specific solvents and significance of quantitative measurements . Fuel , 30 : 145
- Dryden , I. G. C. 1963 . Chemistry of Coal Utilization, Supplementary Volume , Edited by: Lowry , H. H. 237 New York : Wiley .
- Jezko , J. , Gray , D. and Kershaw , J. R. 1982 . The effect of solvent properties on the supercritical gas extraction of coal . Fuel Proc. Technol. , 5 : 229 – 239 .
- Joseph , J. T. 1991a . Beneficial effects of preswelling on conversion and catalytic activity during coal liquefaction . Fuel , 70 : 459 – 464 .
- Joseph , J. T. 1991b . Liquefaction behaviour of solvent-swollen coals . Fuel , 70 : 139 – 144 .
- Kiraz , A. , Sınağ , A. , Tekes , A. T. , Mısırlıoğlu , Z. and Canel , M. 2004 . Effect of pre-swelling on extractability and solvent swelling of Ermenek lignite (Turkey) . Energy Sources , 26 : 431 – 439 .
- Larsen , J. W. and Lee , D. 1985 . Swelling properties of coal . Fuel , 64 : 981
- Marzec , A. , Juzwa , M. , Betlej , K. and Sobkowiak , M. 1979 . Bituminous coal extraction in terms of electron-donor and -acceptor interactions in the solvent/coal system . Fuel Proc. Technol. , 2 : 35 – 44 .
- Marzec , A. and Kisielow , W. 1983 . Mechanism of swelling and extraction and coal structure . Fuel , 62 : 977 – 979 .
- Miura , K. 2000 . Mild conversion of coal for producing valuable chemicals . Fuel Proc. Technol. , 62 : 119 – 135 .
- Mobley , D. P. and Bell , A. T. 1979 . Effects of zinc chloride on the cleavage of ether structures present in coal . Fuel , 58 : 661 – 666 .
- Mobley , D. P. and Bell , A. T. 1980 . Effects of zinc chloride on sulphur removal from coal-related structures . Fuel , 59 : 507 – 510 .
- Nishioka , M. 1992 . The associated molecular nature of bituminous coal . Fuel , 71 : 941 – 948 .
- Nishioka , M. 1993a . Evidence for the associated structure of bituminous coal . Fuel , 72 : 1719 – 1724 .
- Nishioka , M. 1993b . The associative nature of lower rank coal . Fuel , 72 : 1725 – 1732 .
- Philip , C. V. and Anthony , R. G. 1974 . Chemistry of Texas lignite liquefaction in a hydrogen–donor solvent system . Am. Chem. Soc. Fuel Div. , 19 : 196 – 199 .
- Pinto , F. , Gulyurtlu , I. , Lobo , L. S. and Cabrita , I. 1999 . Effect of coal pre-treatment with swelling solvents on coal liquefaction . Fuel , 78 : 629 – 634 .
- Sınağ , A. and Canel , M. 2004 . Comparison of retorting and supercritical extraction techniques on gaining liquid products from Göynük oil shale (Turkey) . Energy Sources , 26 : 739 – 749 .
- Spears , D. R. , Sady , W. , Lowell , D. and Kispert , L. D. 1993 . Low temperature swelling of Argonne Premium Coal Samples: 2. Micropore wall chemistry during swelling . Fuel , 72 : 1225 – 1233 .
- Suuberg , E. M. , Otake , Y. , Langner , M. J. , Leung , K. T. and Milosavljevic , I. 1994 . Coal macromolecular network structure analysis: Solvent swelling thermodynamics and its implications . Energy Fuels , 8 : 1247 – 1262 .
- Szeliga , J. and Marzec , A. 1983 . Swelling of coal in relation to solvent: Electron-donor numbers . Fuel , 62 : 1229 – 1231 .
- Taylor , N. D. and Bell , A. T. 1980 . Solubility increase of coal-derived liquids by silylation and acetylation: Intermolecular hydrogen bonding . Fuel , 59 : 449 – 450 .
- Tekes , A. T. , Sinag , A. , Misirlioglu , Z. and Canel , M. 2002 . Determination of swelling properties of Soma-isiklar lignite (Turkey) . Energy Fuels , 16 : 1309 – 1313 .
- Van Bodegom , B. B. , van Veen , J. A. R. , van Kessle , G. M. M. , Sinnige-Nijssen , M. W. A. and Stuiver , H. C. M. 1984 . Fuel , 63 : 346
- Van Krevelen , D. W. 1965 . Coal constitution and solvent extraction . Fuel , 44 : 229
- Xie , K. C. , Li , F. , Feng , J. and Liu , J. 2000 . Study on the structure and reactivity of swollen coal . Fuel Proc. Tehnol. , 64 : 241 – 251 .
- Yoshinobo , O. and Suberg , E. M. 1997 . Temperature dependence of solvent swelling and diffusion processes in coals . Energy Fuels , 11 : 1155 – 1164 .