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【答案】应助回帖
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oven1986: 金币+1, 检索EPI+1, 感谢你的热心应助！ 2013-11-02 00:21:03
ypf13: 金币+5, ★★★★★最佳答案 2013-11-07 20:39:06
Catalytic Kinetics and Mechanism Transformation of Fe(acac)(3) on the Urethane Reaction of 1,2-Propanediol with Phenyl Isocyanate
作者: Yang, PF (Yang, Pengfei)[ 1 ] ; Li, TD (Li, Tianduo)[ 1 ] ; Li, JY (Li, Junying)[ 1 ]
来源出版物: INTERNATIONAL JOURNAL OF CHEMICAL KINETICS 卷: 45 期: 10 页: 623-628 DOI: 10.1002/kin.20798 出版年: OCT 2013
被引频次: 0 (来自 Web of Science)
引用的参考文献: 31 [ 查看 Related Records ] 引证关系图引证关系图
摘要: The urethane reaction of 1,2-propanediol with phenyl isocyanate was investigated with ferric acetylacetonate (Fe(acac)(3)) as a catalyst. In situ Fourier transform infrared spectroscopy was used to monitor the reaction, and catalytic kinetics of Fe(acac)(3) was studied. The reaction rates of both hydroxyl groups were described with a second-order equation, from which the influence of the Fe(acac)(3) concentration and reaction temperature was discussed. It was very surprising that the relationship between 1/C and t became constant when reaction temperature increased, which indicated that there was no reactive distinction between the two hydroxyl groups. Although the phenomenon differed with the variation of temperature, it was unaffected by the Fe(acac)(3) concentration. It was attributed to the transformation of the reaction mechanism with the increase in temperature. Furthermore, activation energy (E-a), enthalpy (Delta H*), and entropy (Delta S*) for the catalyzed reaction were determined from Arrhenius and Eyring equations, which testified to the transformation of the reaction mechanism. (C) 2013 Wiley Periodicals,
入藏号: WOS:000323481500001
文献类型: Article
语种: English
KeyWords Plus: O-HYDROXYBENZYL ALCOHOL; MOLECULAR-WEIGHT; ISOPHORONE DIISOCYANATE; CHEMICAL-STRUCTURE; SOFT SEGMENT; PART 1; POLYURETHANES; CU(ACAC)(2); INHIBITION; COPOLYMERS
通讯作者地址: Yang, PF (通讯作者) Shandong Polytech Univ, Shandong Prov Key Lab Fine Chem, Jinan 250353, Peoples R China.
增强组织信息的名称
Shandong Polytechnic University
地址: [ 1 ] Shandong Polytech Univ, Shandong Prov Key Lab Fine Chem, Jinan 250353, Peoples R China
增强组织信息的名称
Shandong Polytechnic University
电子邮件地址: ypfyyh@gmail.com
基金资助致谢:
基金资助机构 授权号
General Program of National Natural Science Foundation of China 21176147
[显示基金资助信息][隐藏基金资助信息]
Contract grant sponsor: General Program of National Natural Science Foundation of China.
Contract grant number: 21176147.
出版商: WILEY-BLACKWELL, 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
Web of Science 类别: Chemistry, Physical
研究方向: Chemistry
IDS 号: 205YS
ISSN: 0538-8066 |
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