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Molecules 2010, 15(3), 1898-1902; doi:10.3390/molecules15031898
Article

Liquid-Phase Synthesis of Cyanuric Acid from Urea

1,2
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2
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2
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2 and 1,*
1 College of Science, China Agricultural University, Beijing 100193, China 2 Plant Protection Institute of the Chinese Academy of Agricultural Sciences, Beijing 100193, China
* Author to whom correspondence should be addressed.
Received: 30 January 2010 / Revised: 24 February 2010 / Accepted: 8 March 2010 / Published: 16 March 2010
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Abstract

The focus of this paper was to identify a cheaper solvent from among diesel fuel, kerosene, sulfolane or a mixture of sulfolane and cyclohexanol for the preparation of cyanuric acid heterocyclization of urea. To obtain a higher yield, the effects of catalyst (sodium, ammonium, calcium and zinc salts) and temperature (160 °C to 220 °C) on the trimerization of urea were also carefully studied. We established the optimal reaction conditions and further validated them in our scale-up experiments.
Keywords: cyanuric acid; urea; liquid-phase; yield cyanuric acid; urea; liquid-phase; yield
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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She, D.-M.; Yu, H.-L.; Huang, Q.-L.; Li, F.-M.; Li, C.-J. Liquid-Phase Synthesis of Cyanuric Acid from Urea. Molecules 2010, 15, 1898-1902.

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