Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11223
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Title

The use of solvents for purifying industrial naphthalene from coal tar distilled oils

AuthorsGonzález Azpiroz, María Dolores CSIC; Gutiérrez Blanco, Carlos CSIC; Casal Banciella, María Dolores CSIC ORCID
KeywordsNaphthalene
Coal tar
Purification
Solvent extraction
Issue DateFeb-2008
PublisherElsevier
CitationFuel Processing Technology 89(2): 111-117 (2008)
AbstractThe organic chemistry industry is based on organic compounds derived from coal, petroleum and gas. Coal tars derived from the carbonisation process are complex mixtures, of which the polycyclic aromatic hydrocarbons (PAH's) are the main component. One of the most important PAH's is naphthalene, which represents between 10 to 12% of the sample. In recent years, new applications for industrial naphthalene have been developed. However, the naphthalene required for high level industry must be extremely pure. New routes in the purification process are being studied to reduce the economic cost and environmental impact resulting from the increase in demand for pure naphthalene. Any alternative method to that of sublimation for purification in the distillation process and/or catalytic hydrogenation must improve the quality of industrial naphthalene, to make it suitable for the new applications. In the present work, an alternative method for purifying industrial naphthalene has been investigated. A new process based on extraction with solvents such as phosphoric acid and acetic acid is reported and discussed. Industrial naphthalene was purified by means of a new technique and the stability and good properties of the product were verified.
Description7 pages, 2 figures, 2 tables.-- Available online Aug 31, 2007.
Publisher version (URL)http://dx.doi.org/10.1016/j.fuproc.2007.06.001
URIhttp://hdl.handle.net/10261/11223
DOI10.1016/j.fuproc.2007.06.001
ISSN0378-3820
Appears in Collections:(INCAR) Artículos

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