Analysis of Recycle Solvent in Coal Liquefaction (I)
Naphthalene Derivatives
1998 Volume 77 Issue 2 Pages 111-118
Details
1998 Volume 77 Issue 2 Pages 111-118
100 samples of recycle solvent were obtained by continuous operation (50 days) of 1 ton/day coal liquefaction plant at Kimitu. Naphthalene derivatives in the recycle solvents were anslyzed in detail by the technique of selective ion measurement of GC/MS. Accordingto the replacement of the initial solvent by coal-derived products, the carbon number of alkyl side chain of the naphthalene derivatives in the recycle solvent became larger as well as structures of the alkyl side chains changed from poly methyls to longer chains. The ability of hydrogen donor of alkyl-tetralins/indanes depended on the carbon numbers of alkyl side chain: increase in carbon numbers decreased the ability of hydrogen donor.
