Investigation of the thermal and conductive properties of oxalic acid salts with planar and undulating proton-conducting layers

CrystEngComm ◽  
2020 ◽  
Vol 22 (11) ◽  
pp. 2031-2041
Author(s):  
Małgorzata Widelicka ◽  
Paweł Ławniczak ◽  
Adam Pietraszko ◽  
Katarzyna Pogorzelec-Glaser ◽  
Andrzej Łapiński
Keyword(s):  
Oxalic Acid ◽  
Physical Properties ◽  
Proton Conductors ◽  
Proton Conducting ◽  
Conductive Properties ◽  
Acid Salts

The physical properties of two proton conductors 1H-1,2,4-triazol-4-ium hydrogen oxalate (TriOX) and 1H-imidazol-3-ium hydrogen oxalate (ImiOX) were investigated.

scholarly journals ION SERIES AND THE PHYSICAL PROPERTIES OF PROTEINS. I

1920 ◽  
Vol 3 (1) ◽  
pp. 85-106 ◽  
Author(s):  
Jacques Loeb
Keyword(s):  
Oxalic Acid ◽  
Physical Properties ◽  
Osmotic Pressure ◽  
Chloride Solution ◽  
Dibasic Acid ◽  
Egg Albumin ◽  
Phosphoric Acids ◽  
Acid Salts

1. This paper contains experiments on the influence of acids and alkalies on the osmotic pressure of solutions of crystalline egg albumin and of gelatin, and on the viscosity of solutions of gelatin. 2. It was found in all cases that there is no difference in the effects of HCl, HBr, HNO3, acetic, mono-, di-, and trichloracetic, succinic, tartaric, citric, and phosphoric acids upon these physical properties when the solutions of the protein with these different acids have the same pH and the same concentration of originally isoelectric protein. 3. It was possible to show that in all the protein-acid salts named the anion in combination with the protein is monovalent. 4. The strong dibasic acid H2SO4 forms protein-acid salts with a divalent anion SO4 and the solutions of protein sulfate have an osmotic pressure and a viscosity of only half or less than that of a protein chloride solution of the same pH and the same concentration of originally isoelectric protein. Oxalic acid behaves essentially like a weak dibasic acid though it seems that a small part of the acid combines with the protein in the form of divalent anions. 5. It was found that the osmotic pressure and viscosity of solutions of Li, Na, K, and NH4 salts of a protein are the same at the same pH and the same concentration of originally isoelectric protein. 6. Ca(OH)2 and Ba(OH)2 form salts with proteins in which the cation is divalent and the osmotic pressure and viscosity of solutions of these two metal proteinates are only one-half or less than half of that of Na proteinate of the same pH and the same concentration of originally isoelectric gelatin. 7. These results exclude the possibility of expressing the effect of different acids and alkalies on the osmotic pressure of solutions of gelatin and egg albumin and on the viscosity of solutions of gelatin in the form of ion series. The different results of former workers were probably chiefly due to the fact that the effects of acids and alkalies on these proteins were compared for the same quantity of acid and alkali instead of for the same pH.

scholarly journals Justification of the active method of protecting the insulation of submersible electric motors

2019 ◽  
Vol 124 ◽  
pp. 02003
Author(s):  
V. A. Trushkin ◽  
O. N. Churlyaeva ◽  
R. V. Kozichev
Keyword(s):  
Physical Properties ◽  
Electrical Breakdown ◽  
Electrical Equipment ◽  
Working Environment ◽  
Operating Parameters ◽  
Insulation Resistance ◽  
Electric Motors ◽  
Electrically Conductive ◽  
Active Method ◽  
Conductive Properties

The article provides an analysis of the properties of the working environment of submersible electrical equipment. The influence of the operating parameters of electrical equipment on the physical properties of the fluid (its electrically conductive properties) is considered. Mathematical confirmation of the implementation of electroosmosis in the capillaries of the insulation of submersible electric motors is given. The rationale for the active method of protecting submersible electrical equipment from reducing insulation resistance and preventing electrical breakdown is given.

scholarly journals Local structure and vibrational dynamics of proton conducting Ba2In2O5(H2O)x

2019 ◽  
Vol 7 (29) ◽  
pp. 17626-17636 ◽  
Author(s):  
A. Perrichon ◽  
M. Jiménez-Ruiz ◽  
L. Mazzei ◽  
S. M. H. Rahman ◽  
M. Karlsson
Keyword(s):  
Local Structure ◽  
Conduction Mechanism ◽  
Proton Conduction ◽  
Proton Conductors ◽  
Vibrational Dynamics ◽  
Proton Conducting

Studies of partially and fully hydrated Ba2In2O5(H2O)xproton conductors point toward segregation into pseudo-cubic and brownmillerite-type phases and a highly anisotropic proton conduction mechanism.

Nanostructured proton-conducting membranes based on polymerizable zwitterionic ionic liquid microemulsions

2016 ◽  
Vol 40 (9) ◽  
pp. 7580-7586 ◽  
Author(s):  
Fei Lu ◽  
Xinpei Gao ◽  
Panpan Sun ◽  
Liqiang Zheng
Keyword(s):  
Ionic Liquid ◽  
Proton Conductors ◽  
Proton Conducting ◽  
First Time ◽  
Conducting Membranes

Polymerizable zwitterionic ionic liquid microemulsions were fabricated for the first time to prepare ionic liquid based proton-conductors.

Proton Conducting Solid Electrolytes for High Temperature Humidity Sensing

1992 ◽  
Vol 293 ◽  
Author(s):  
Martha Greenblatt ◽  
Shouhua Feng
Keyword(s):  
High Temperature ◽  
Ionic Conductivity ◽  
Solid Electrolytes ◽  
Ceramic Composite ◽  
Proton Conductors ◽  
Humidity Sensors ◽  
Emf Measurements ◽  
Humidity Sensing ◽  
Proton Conducting ◽  
Basic Characteristics

AbstractThe properties of various proton conducting solid electrolytes were investigated by electrochemical galvanic cell and ac impedance type measurements for applications as high temperature (T>200°C) humidity sensors. The basic characteristics of proton conductors required for humidity sensing are reviewed. Results of ionic conductivity and EMF measurements and their implications for the mechanism of ion transport are discussed for two prototype ceramic humidity sensors: β-Ca(PO3)2 and a NASICON-type ceramic composite, HZr2P3O12/ZrP2O7.

Synthesis and Physical Properties of Proton Conducting Polymer Electrolytes Comprising PAM Cross-Linked Flexible Spacers

2019 ◽  
Vol 27 (7) ◽  
pp. 713-719 ◽  
Author(s):  
Seyda Tugba Gunday ◽  
M. A. Almessiere ◽  
Hamide Aydın ◽  
Ayhan Bozkurt
Keyword(s):  
Physical Properties ◽  
Conducting Polymer ◽  
Polymer Electrolytes ◽  
Proton Conducting

Effect of counter ions on physical properties of imidazole-based proton conductors

2019 ◽  
Vol 306 ◽  
pp. 575-589 ◽  
Author(s):  
Sylwia Zięba ◽  
Alina Dubis ◽  
Paweł Ławniczak ◽  
Andrzej Gzella ◽  
Katarzyna Pogorzelec-Glaser ◽  
...  
Keyword(s):  
Physical Properties ◽  
Proton Conductors ◽  
Counter Ions

scholarly journals Quenched microemulsions: a new route to proton conductors

Soft Matter ◽  
2014 ◽  
Vol 10 (32) ◽  
pp. 5928-5935 ◽  
Author(s):  
Cecile Noirjean ◽  
Fabienne Testard ◽  
Jacques Jestin ◽  
Olivier Taché ◽  
Christophe Dejugnat ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Structural Modification ◽  
Proton Conductors ◽  
Thermal Transition ◽  
Conducting Film ◽  
Proton Conducting

Fatty acid-based microemulsions stabilised with a proton-conducting film either crystallise or undergo a thermal transition without structural modification.

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

2018 ◽  
Vol 34 (4) ◽  
pp. 455-479 ◽  
Author(s):  
Robert Gloukhovski ◽  
Viatcheslav Freger ◽  
Yoed Tsur
Keyword(s):  
Composite Membranes ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Proton Conductors ◽  
Pore Filling ◽  
Porous Support ◽  
Proton Conducting ◽  
Physical Strength ◽  
The Matrix

Abstract Composite membranes based on porous support membranes filled with a proton-conducting polymer appear to be a promising approach to develop novel proton exchange membranes (PEMs). It allows optimization of the properties of the filler and the matrix separately, e.g. for maximal conductivity of the former and maximal physical strength of the latter. In addition, the confinement itself can alter the properties of the filling ionomer, e.g. toward higher conductivity and selectivity due to alignment and restricted swelling. This article reviews the literature on PEMs prepared by filling of submicron and nanometric size pores with Nafion and other proton-conductive polymers. PEMs based on alternating perfluorinated and non-perfluorinated polymer systems and incorporation of fillers are briefly discussed too, as they share some structure/transport relationships with the pore-filling PEMs. We also review here the background knowledge on structural and transport properties of Nafion and proton-conducting polymers in general, as well as experimental methods concerned with preparation and characterization of pore-filling membranes. Such information will be useful for preparing next-generation composite membranes, which will allow maximal utilization of beneficial characteristics of polymeric proton conductors and understanding the complicated structure/transport relationships in the pore-filling composite PEMs.

Sign in / Sign up

Export Citation Format

Share Document