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Citation: ZHANG Tianyong, LI Shuning, LI Bin, DENG Yongfeng, YUAN Zhongfei. Synthesis of High-Purity 2,6-Dihydroxynaphthalene[J]. Chinese Journal of Applied Chemistry, ;2015, 32(2): 166-170. doi: 10.11944/j.issn.1000-0518.2015.02.140125 shu

Synthesis of High-Purity 2,6-Dihydroxynaphthalene

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a Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072 China;
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b Nantong Baisheng Chemical Co. Ltd., Qidong, Jiangsu 326000, China

Corresponding author: LI Bin,
Received Date: 14 April 2014
Available Online: 27 August 2014
Fund Project: 国家自然科学基金(21103121,21276187) (21103121,21276187)天津市自然科学基金(13JCQNJC05800)资助项目 (13JCQNJC05800)

High purity 2,6-dihydroxynaphthalene was synthesized by one-pot alkali fusion using cheap disodium 2,6-naphthalenedisulfonate as the starting material. Under nitrogen atmosphere,in order to avoid overoxidation and obtain high yield of 2,6-dihydroxynaphthalene,phenol or antioxidant 1010 was added. Under the optimal technological conditions,the mass ratio of disodium 2,6-naphthalenedisulfonate and alkali 1:3,the mass ratio of sodium hydroxide and potassium hydroxide 2:1 in mixed alkali,the reaction temperature 345℃,the yield of 2,6-dihydroxynaphthalene in the alkali fusion is 86.3%. It is confirmed that the purity of 2,6-dihydroxynaphthalene is up to 99% after being refined by a methanol-water mixed solvent.
- disodium naphthalenedisulfonate,
- dihydroxynaphthalene,
- antioxidant,
- mixed alkali
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