Enthalpies of transfer of formamide, N-methylformamide, N,N-dimethylformamide and urea from water to some aqueous alcohol solvent systems at 298 K

1991 ◽  
Vol 87 (15) ◽  
pp. 2447 ◽  
Author(s):  
Gerard Carthy ◽  
David Feakins ◽  
Colm O'Duinn ◽  
W. Earle Waghorne
Keyword(s):  
Aqueous Alcohol ◽  
Enthalpies Of Transfer ◽  
Alcohol Solvent ◽  
Solvent Systems

scholarly journals Coordination polymers of ZnIIand 5-methoxy isophthalate

2015 ◽  
Vol 44 (40) ◽  
pp. 17686-17695 ◽  
Author(s):  
Laura J. McCormick ◽  
Samuel A. Morris ◽  
Simon J. Teat ◽  
Matthew J. McPherson ◽  
Alexandra M. Z. Slawin ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Isophthalic Acid ◽  
Aqueous Alcohol ◽  
Alcohol Solvent ◽  
Solvent Systems

Four different coordination polymers were prepared by reaction of Zn(OAc)2and 5-methoxy isophthalic acid using various aqueous/aqueous alcohol solvent systems.

Development of an Effective Scale Inhibitor Based on Organophosphonic Compounds in an Aqueous-Alcohol Solvent

2015 ◽  
Vol 50 (6) ◽  
pp. 584-587
Author(s):  
M. A. Varfolomeev ◽  
A. V. Gerasimov ◽  
I. T. Rakipov ◽  
D. K. Nurgaliev ◽  
A. V. Luzhetskii ◽  
...  
Keyword(s):  
Aqueous Alcohol ◽  
Scale Inhibitor ◽  
Alcohol Solvent

scholarly journals Integrated modifying zinc-containing additive for construction silicate compositions

2021 ◽  
Vol 263 ◽  
pp. 01021
Author(s):  
Yuri Ivaschenko ◽  
Maria Kochergina ◽  
Irina Pavlova ◽  
Natalya Fomina
Keyword(s):  
Granular Material ◽  
Sodium Silicate ◽  
Zinc Acetate ◽  
Water Resistance ◽  
Amorphous State ◽  
Thermal Characteristics ◽  
Aqueous Alcohol ◽  
Silicate System ◽  
Alcohol Solvent ◽  
Rational Composition

Sodium silicate binders are a promising binder base for obtaining effective granular thermal insulation materials. Increasing water resistance, first of all, will expand the scope of their application in construction. At the same time, the features of the modification of sodium silicate binders by compounds of polyvalent metals have not been fully studied, the interaction with which leads to the formation of hardly soluble silicates. The purpose of this work was to develop a modifying complex based on a zinc-containing compound - zinc acetate to increase the water resistance and thermal characteristics of the porous granular material. The proposed modifying additive is a complex consisting of zinc acetate and an organic alcohol solvent. It is shown that the properties of porous granular material can be controlled by changing the composition of the zinc acetate solvent. Qualitative and quantitative dependences of the properties of porous granules (strength, water resistance, density, thermal conductivity) on the type of zinc-containing solution and its content in the compositions have been obtained. The concept of the mechanism of formation of sparingly soluble complexes during the modification of sodium silicate binders with zinc-containing aqueous-alcoholic solutions has been developed. X-ray phase analysis showed that the sodium silicate system modified with an aqueous alcohol solution of zinc acetate, in contrast to an aqueous solution of zinc acetate, is completely in an amorphous state. We believe that compounds of the Zn2SiO4H2O, ZnSiO3 type are in the amorphous state. The obtained research results made it possible to determine the rational composition of granular heat-insulating material with increased operational and functional characteristics (ρ = 200-280 kg / m3, λ = 0.052-0.063 W / (m °C), R = 1.3-1.8 MPa, Kr = 0.89-0.92, W = 16- 18 %).

Hydrogen-Bonded Solvent Systems

1969 ◽  
Vol 67 (1_3) ◽  
pp. 168-168
Author(s):  
H. G. Hertz
Keyword(s):  
Solvent Systems ◽  
Hydrogen Bonded
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