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18.97.14.84
18.97.14.84
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SCOPUS
나프타렌의 썰포네이션에 관한 연구
Study on the Sulfonation of Naphthalene
임진남 , 배종웅 , 신석봉 ( Chin Nam Rhim , Joung Woong Pai , Suk Bong Shin )
화학공학 vol. 6 iss. 4 189-194(6pages)
UCI I410-ECN-0102-2008-570-001971632

β-Naphthol is the most important dye intermediaters in the preparation of azo dyes, and is made by the alkali fusion of β-naphthalene sulfonic acid with sodium hydroxide. This study on sulfonation aimed at the production of β-naphthalene sulfonic acid and carried out in varying temperatures between 130°-160℃ for about 8 hrs, where the initial mole ratio of sulfonic acid vs to naphthalene was used 1:1. Sampling was taken by the time intervals of 0.5 or 1 hr. The unreacted sulfonic acid in the sample was analyzed by titration with M/100 EDTA and both of α-and β-sulfonic acid which was produced during the reaction was analyzed by using "Euwes`s solubility chart of Pb salt". From the result of this experiment, it was found that this reaction was nothing but a first order consecutive reversible one though this reaction was expressed as follows, "naphthalene+sulfonic acid★α-naphthalene sulfonic acid+water★β-naphthalene sulfonic acid+water"

[자료제공 : 네이버학술정보]
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