Relative permittivity of the binary mixtures of 2-methoxyethanol with diethylene glycol, triethylene glycol, tetraethylene glycol, and polyethylene glycol 200 at various temperatures

2007 ◽  
Vol 39 (5) ◽  
pp. 822-826 ◽  
Author(s):  
Cezary M. Kinart ◽  
Magdalena Klimczak ◽  
Aneta Ćwilińska ◽  
Wojciech J. Kinart
Keyword(s):  
Polyethylene Glycol ◽  
Binary Mixtures ◽  
Diethylene Glycol ◽  
Relative Permittivity ◽  
Triethylene Glycol ◽  
Tetraethylene Glycol ◽  
Polyethylene Glycol 200

scholarly journals Synthesis of cyclic ethers by cyclodehydration of 1, n -diols using heteropoly acids as catalysts

2018 ◽  
Vol 5 (9) ◽  
pp. 180740 ◽  
Author(s):  
Yufeng Sun ◽  
Yatao Huang ◽  
Minmin Li ◽  
Jia Lu ◽  
Nuo Jin ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Diethylene Glycol ◽  
Triethylene Glycol ◽  
Monomethyl Ether ◽  
Heteropoly Acids ◽  
Cyclic Ethers ◽  
Glycol Monomethyl Ether ◽  
Polyethylene Glycol 200 ◽  
Catalyst Systems ◽  
Better Than

Heteropoly acids were used as catalysts for cyclodehydration of various 1, n -diols. Cyclodehydration of butane-1,4-diol, pentane-1,5-diol and hexane-1,6-diol catalysed by H 3 PW 12 O 40 gave tetrahydrofuran, tetrahydropyran and oxepane, respectively. Cyclodehydration of diethylene glycol, triethylene glycol, diethylene glycol monomethyl ether and polyethylene glycol 200 catalysed by H 3 PW 12 O 40 gave 1,4-dioxane. In particular, cyclodehydration of hexane-1,6-diol gave an excellent yield of oxepane (80%). The selectivity exhibited by the H 3 PW 12 O 40 catalyst was even better than that exhibited by other reported catalyst systems for similar cyclodehydration reactions.

Viscosimetric and ultrasonic studies of intermolecular interactions of 2-methoxyethanol with diethylene glycol, triethylene glycol and tetraethylene glycol binary mixtures

2008 ◽  
Vol 46 (4) ◽  
pp. 454-463 ◽  
Author(s):  
Aneta Ćwiklińska ◽  
Piotr Miecznik ◽  
Magdalena Klimczak ◽  
Cezary M. Kinart
Keyword(s):  
Binary Mixtures ◽  
Intermolecular Interactions ◽  
Diethylene Glycol ◽  
Triethylene Glycol ◽  
Tetraethylene Glycol
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