Separation of isomeric dimethylnaphthalene mixture in supercritical carbon dioxide by using zeolite
- Kyushu Univ., Fukuoka (Japan). Dept. of Chemical Engineering
- Glastic Corp., Cleveland, OH (United States)
- Kobe Steel, Ltd., Hyogo (Japan). Polymer and Chemical Technology Lab.
Separation methods for automatic compounds in coal liquefaction products have received considerable attention recently for use for the raw materials of fine chemicals. The adsorption separation of the isomeric dimethylnaphthalene (DMN) mixture of 2,6- and 2,7-DMN in supercritical carbon dioxide was performed. The experiment was carried out by using various zeolites as the adsorbent at the temperature 308.2 K and the pressures 12.0, 14.8, and 19.8 MPa. It was found that a suitable zeolite exists for the separation of the DMN mixture and that the zeolite can adsorb 2,7-DMN selectivity. It shows the possibility for the adsorption separation of the DMN mixture in supercritical carbon dioxide.
- OSTI ID:
- 7137289
- Journal Information:
- Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 33:9; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010500 -- Coal
Lignite
& Peat-- Products & By-Products
AROMATICS
COAL LIQUIDS
CONDENSED AROMATICS
EXTRACTION
FLUIDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOMERS
LIQUIDS
MATERIALS
MINERALS
ORGANIC COMPOUNDS
PRESSURE DEPENDENCE
SEPARATION PROCESSES
SILICATE MINERALS
SOLVENT EXTRACTION
SORPTIVE PROPERTIES
SUPERCRITICAL GAS EXTRACTION
SURFACE PROPERTIES
ZEOLITES