Urethane reaction kinetics of butanediols catalyzed by Zr(acac)4
Urethane reaction kinetics of butanediols catalyzed by Zr(acac)4
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Zr(acac)4催化丁二醇的氨基甲酸酯反应动力学
DOI:
10.1002/app.38978
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发表时间:
2013-09
影响因子:
3
通讯作者:
Peng Fei Yang*, Tian Duo Li
中科院分区:
文献类型:
--
作者:
Peng Fei Yang*, Tian Duo Li
The urethane reaction of isocyanate was carried out with zirconium acetyl acetonate (Zr(acac)4) as catalyst. 1,2-Butanediol and 1,4-butanediol were used as model compounds to investigate the reaction kinetics. It was shown that hydroxyl groups in 1,2-butanediol appeared to have different reaction rate when reacting with phenyl isocyanate, which was labeled as kfast and kslow. It was very surprising that the reaction rate of 1,4-butanediol (kcon) was very similar to the value of kslow at the same temperature although there is only primary hydroxyl group in its molecule. Furthermore, activation energy (Ea), activation enthalpy (ΔH), and activation entropy (ΔS) for the reaction were calculated out, from which some catalytic properties of Zr(acac)4 were revealed. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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DOI:
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发表时间:
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期刊:
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