A study of synthesizing of ether by phase transfer catalysis
碩士 === 國立中正大學 === 化學工程研究所 === 89 === The reaction of alcohols and epichlorhydrin to synthesize ether compounds by phase transfer catalysis was successfully carried out in an alkaline solution/organic solvent two phase medium. The main purpose of this study...
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ndltd-TW-089CCU000630042016-01-29T04:22:51Z http://ndltd.ncl.edu.tw/handle/79025833765791952949 A study of synthesizing of ether by phase transfer catalysis 利用相間轉移觸媒合成醚類之研究 Chao-Chieh Chen 陳朝杰 碩士 國立中正大學 化學工程研究所 89 The reaction of alcohols and epichlorhydrin to synthesize ether compounds by phase transfer catalysis was successfully carried out in an alkaline solution/organic solvent two phase medium. The main purpose of this study is to find the reaction conditions in such a way to search the kinetic behaviar、reaction mechanism、activation energy etc. . Terabutylammonium hydrogen bromide(TBAB)is emploed as the phase Transfer catalyst. Rigid conclusions were obtained as follows: 1.The reaction follows psedo-first-order rate law when the molar ratio of the concentration of aqueous-phase reactant(1-Butanol)and the concentration of organic-phase reactant(Epichlorhydrin)is larger than 3. 2.Beyond 600 rpm,the reaction rate and conversion are both not influenced by the agitation speed. 3.The reaction rate and conversion are both increased with the increase of the amount of KOH. 4.The reaction rate and conversion are both increased with the increase of alkaline substance. 5.The reaction rate and conversion are decreased with the increase of the amount of water. 6.The reaction rate and conversion are both decreased with the increase of the temperature. 7.The reaction rate and conversion are both decreased with the increase of the amount of TBAB. 8.A good catalyst is to use the quaternary salt with cation group of large carbon number、symmetry and in the absence of aromatic functional group. 9.The reaction rate and conversion are both decreased with the increase of the amount of organic solvent. 10.A solvent of low polarity is recommended to obtain a higer conversion or reaction rate. Maw-Ling Wang 王茂齡 2001 學位論文 ; thesis 92 zh-TW |
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碩士 === 國立中正大學 === 化學工程研究所 === 89 === The reaction of alcohols and epichlorhydrin to synthesize ether
compounds by phase transfer catalysis was successfully carried out in an
alkaline solution/organic solvent two phase medium. The main purpose
of this study is to find the reaction conditions in such a way to search the
kinetic behaviar、reaction mechanism、activation energy etc. .
Terabutylammonium hydrogen bromide(TBAB)is emploed as the phase
Transfer catalyst. Rigid conclusions were obtained as follows:
1.The reaction follows psedo-first-order rate law when the molar ratio of the concentration of aqueous-phase reactant(1-Butanol)and the
concentration of organic-phase reactant(Epichlorhydrin)is larger than 3.
2.Beyond 600 rpm,the reaction rate and conversion are both not influenced
by the agitation speed.
3.The reaction rate and conversion are both increased with the increase of
the amount of KOH.
4.The reaction rate and conversion are both increased with the increase of
alkaline substance.
5.The reaction rate and conversion are decreased with the increase of the
amount of water.
6.The reaction rate and conversion are both decreased with the increase of the temperature.
7.The reaction rate and conversion are both decreased with the increase
of the amount of TBAB.
8.A good catalyst is to use the quaternary salt with cation group of large
carbon number、symmetry and in the absence of aromatic functional
group.
9.The reaction rate and conversion are both decreased with the increase
of the amount of organic solvent.
10.A solvent of low polarity is recommended to obtain a higer conversion
or reaction rate.
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author2 |
Maw-Ling Wang |
author_facet |
Maw-Ling Wang Chao-Chieh Chen 陳朝杰 |
author |
Chao-Chieh Chen 陳朝杰 |
spellingShingle |
Chao-Chieh Chen 陳朝杰 A study of synthesizing of ether by phase transfer catalysis |
author_sort |
Chao-Chieh Chen |
title |
A study of synthesizing of ether by phase transfer catalysis |
title_short |
A study of synthesizing of ether by phase transfer catalysis |
title_full |
A study of synthesizing of ether by phase transfer catalysis |
title_fullStr |
A study of synthesizing of ether by phase transfer catalysis |
title_full_unstemmed |
A study of synthesizing of ether by phase transfer catalysis |
title_sort |
study of synthesizing of ether by phase transfer catalysis |
publishDate |
2001 |
url |
http://ndltd.ncl.edu.tw/handle/79025833765791952949 |
work_keys_str_mv |
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