Corrosion of bronze by acetic and formic acid vapours, sulphur dioxide and sodium chloride particles

1995 ◽  
Vol 46 (9) ◽  
pp. 515-519 ◽  
Author(s):  
J. M. Bastidas ◽  
B. Chico ◽  
M. P. Alonso ◽  
E. M. Mora
Keyword(s):  
Sodium Chloride ◽  
Formic Acid ◽  
Sulphur Dioxide

Energies of interaction and other properties of clathrate compounds

1954 ◽  
Vol 223 (1153) ◽  
pp. 238-250 ◽  
Keyword(s):  
Formic Acid ◽  
Hydrogen Chloride ◽  
Sulphur Dioxide ◽  
Hydrogen Bromide ◽  
Energy Difference ◽  
Heats Of Formation ◽  
Free Energies ◽  
Clathrate Compounds ◽  
Intermolecular Contacts

Heats of formation of clathrate compounds of β-quinol with argon, oxygen, nitrogen, hydrogen chloride, hydrogen bromide, formic acid and methanol have been determined calorimetrically. For the argon and oxygen compounds, the heats of formation were determined for samples of widely differing composition, and they vary linearly with the fraction of available spaces filled. Using the energy difference between α- and β-quinol obtained directly or by extrapolation of the measurements on the argon and oxygen compounds, the energies of interaction of the enclosed molecules with the β-quinol cage have been determined. Their values are interpreted in terms of the polarizabilities of the enclosed molecules and the number of intermolecular contacts occurring. The free energies of formation, and the colours of the sulphur dioxide and oxygen clathrate compounds are also discussed briefly.

TiO2-Mediated Photoelectrocatalytic Purification of Water

1998 ◽  
Vol 3 (3) ◽  
Author(s):  
Roberto J. Candal ◽  
Walter A. Zeltner ◽  
Marc A. Anderson
Keyword(s):  
Sodium Chloride ◽  
Formic Acid ◽  
Sol Gel ◽  
304 Stainless Steel ◽  
Porous Films ◽  
Metal Plates ◽  
Repeated Use ◽  
Titania Coatings ◽  
Gel Processing ◽  
Purification Of Water

AbstractSol-gel processing methods were employed to coat thin, porous films of titania on metal plates, specifically on aluminum, 304 stainless steel, and titanium. After coating and firing, all of these materials displayed photocatalytic activity when tested with a solution of formic acid that contained dissolved sodium chloride. However, only the titanium-supported photoelectrodes were stable with repeated use. Activities of these titaniumsupported photoelectrodes increased, often by factors of two to three, when positive potentials were applied across the titania coatings. Electrode activities increased when multiple coatings of titania were applied to the electrodes, although electrode stability was problematic when multiple coatings were deposited. Photoelectrocatalytic activities were not inhibited significantly by the presence of sodium chloride in the test solutions, while copper could be deposited on platinum cathodes when the test solutions contained dissolved copper in addition to sodium chloride and formic acid.

The dissociation quotients of formic acid in sodium chloride solutions to 200�C

1993 ◽  
Vol 22 (2) ◽  
pp. 125-136 ◽  
Author(s):  
Julie L. S. Bell ◽  
David J. Wesolowski ◽  
Donald A. Palmer
Keyword(s):  
Sodium Chloride ◽  
Formic Acid ◽  
Chloride Solutions ◽  
Sodium Chloride Solutions

scholarly journals Mechanism of Reduction of Sulphur Dioxide by Formic Acid.

1962 ◽  
Vol 16 ◽  
pp. 570-574
Author(s):  
Marit Goliath ◽  
Bengt O. Lindgren ◽  
Preben C. Mörk ◽  
G. A. Sim ◽  
Olof Theander ◽  
...  
Keyword(s):  
Formic Acid ◽  
Sulphur Dioxide

Microscopic mechanism of the interaction between water and formic acid-sodium chloride aerosol

2019 ◽  
Vol 344 ◽  
pp. 46-57 ◽  
Author(s):  
Chao Zhang ◽  
Yueshe Wang ◽  
Haijun Wang ◽  
Yang Yang ◽  
Chenpei Li
Keyword(s):  
Sodium Chloride ◽  
Formic Acid ◽  
Microscopic Mechanism

The Potential to Machine Superconductors with Electrochemical Machining

2016 ◽  
Vol 07 (01) ◽  
pp. 1640001
Author(s):  
Rebecca J. Leese ◽  
Atanas Ivanov ◽  
Hari Babu-Nadendla
Keyword(s):  
Sodium Chloride ◽  
Formic Acid ◽  
Copper Oxide ◽  
Surface Finish ◽  
Electrochemical Machining ◽  
Barium Copper Oxide ◽  
Barium Copper ◽  
Solvent Systems ◽  
First Time ◽  
Conventional Machining

Superconductors (SCs), such as gadolinium barium copper oxide, are brittle ceramics which are very difficult to machine conventionally due to the easy propagation of cracks. The cracks formed during conventional machining destroy the superconductive properties of the material. As a result a new method to machine ceramic SCs is needed. In this paper, polarization experiments were conducted in various nonaqueous salt electrolytes to determine whether electrochemical machining (ECM) is a suitable method for machining gadolinium barium copper oxide with silver inclusions (GdBCO-Ag) for the first time. Sodium chloride in formic acid proved to be the best electrolyte for this application with higher dissolution rates and achieving a better surface finish. It was noted that GdBCO-Ag dissolved at higher rates in NaCl in formic acid than in other salt-solvent systems.

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