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Preparation of phosphorous acid from phosphorus

Publisher: Elsevier Science
Year: 2002
Weight: 31 KB
Volume: 2002
Category: Article
ISSN: 1351-4180
DOI: 10.1016/s1351-4180(02)01254-0

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✦ Synopsis

Process could reduce costs for terephthalic acid

Lurgi, Eastman, and SK have developed a process for making terephthalic acid (PTA) which might achieve savings of $50/tonne. The mild oxidation leads to less byproducts. Other advantages include use of the heat of reaction, simple recovery of catalyst, and recycling of solvent. The process gives extremely low concentrations of p-toluic acid. A 500,000 tonne/y plant would cost $226 M rather than $280 M using traditional technology.

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