Inverse phase transfer catalysis versus interfacial catalysis. Effect of medium stirring in the epoxidation reaction of chalcone by hydrogen peroxide

2002 ◽  
pp. 1689-1691 ◽  
Author(s):  
Bernard Boyer ◽  
Araik Hambardzoumian ◽  
Jean-Pierre Roque ◽  
Norair Beylerian
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Epoxidation Reaction ◽  
Interfacial Catalysis ◽  
Inverse Phase Transfer Catalysis

Static phase transfer catalysis for Williamson reactions: Pickering interfacial catalysis

2019 ◽  
Vol 9 (13) ◽  
pp. 3445-3453 ◽  
Author(s):  
Qianqiang Zhao ◽  
Xiao Zhao ◽  
Hui Peng ◽  
Yang Liu ◽  
Lihui Yang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Silica Particles ◽  
Static Phase ◽  
Interfacial Catalysis

A static PIC system with silica particles was prepared for PTC reactions and exhibited enhanced catalytic activity.

Efficiency of phase-transfer catalysis in cyclopentene epoxidation with hydrogen peroxide

2012 ◽  
Vol 85 (4) ◽  
pp. 661-665 ◽  
Author(s):  
A. E. Meshechkina ◽  
L. V. Mel’nik ◽  
G. V. Rybina ◽  
S. S. Srednev ◽  
A. S. Shevchuk
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer Catalysis ◽  
Phase Transfer

Synthesis of Epoxidized Soybean Oil via Phase Transfer Catalysis

2013 ◽  
Vol 690-693 ◽  
pp. 1061-1064 ◽  
Author(s):  
Lu Jing ◽  
Guo Qin Liu ◽  
Xin Qi Liu ◽  
Xue De Wang
Keyword(s):  
Reaction Time ◽  
Soybean Oil ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Active Agent ◽  
Epoxidized Soybean Oil ◽  
Reaction Conditions ◽  
Epoxidation Reaction ◽  
Optimized Conditions ◽  
Epoxy Value

In the system of heteropoly acid [π-C5H5NC16H33]3[PO4(WO3)4], H2O2 (30 %, w/w), polyethylene glycol, 1,2-dichloroethane, soybean oil under went epoxidation reaction smoothly via reaction-controlled phase transfer catalysis. Effects of the amount of interfacial active agent, H2O2, catalyst and reaction time were investigated and the optimized reaction conditions were as follows: 10 g of soybean oil, 0.3 g of [π-C5H5NC16H33]3[PO4 (WO3)4],8 ml of H2O2 (30 %, w/w), 5.0 ml of PEG, 30 g of 1,2-dichloroethane, and the reaction temperature was 65 °C and reaction time was 3.5-4.0 h. Under these optimized conditions, an epoxy value of 6.30 % and a yield of 90 % were obtained. Hence, it is an environmental-friendly and effective way to synthesize epoxidized soybean oil.

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