Preparation of superconductingYBa2Cu3O7from the corresponding metal formates

1988 ◽  
Vol 37 (7) ◽  
pp. 3727-3729 ◽  
Author(s):  
Rm. Panayappan ◽  
Joseph T. Guy ◽  
Robert Binstead ◽  
Valerie LeToyrneau ◽  
John C. Cooper
Keyword(s):  
Metal Formates

Perovskite-like Metal Formates with Weak Ferromagnetism and as Precursors to Amorphous Materials

2004 ◽  
Vol 43 (15) ◽  
pp. 4615-4625 ◽  
Author(s):  
Xin-Yi Wang ◽  
Lin Gan ◽  
Shi-Wei Zhang ◽  
Song Gao
Keyword(s):  
Amorphous Materials ◽  
Weak Ferromagnetism ◽  
Metal Formates

scholarly journals The formation of formates: 3a review of metal formates on heritage objects

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Gerhard Eggert ◽  
Andrea Fischer
Keyword(s):  
Degradation Products ◽  
Dominant Role ◽  
Copper Alloys ◽  
Wood Products ◽  
Corrosion Products ◽  
Metal Corrosion ◽  
Irreversible Damage ◽  
Preventive Conservation ◽  
Calcium Formate ◽  
Metal Formates

AbstractMetal formates sometimes occur as degradation products on heritage objects due to the use of wood products or other sources of formic acid and formaldehyde. They are often related to alkaline surfaces which transform formaldehyde directly into formate. The dominant role of formate on alkaline surfaces, for example in glass-induced metal corrosion (GIM) or calcium carbonate degradation, was explored in the Stuttgart research on rare heritage corrosion products. This review discusses these findings together with those from the literature: ocurrences of sodium and potassium formate on glass, calcium formate and calcium acetate-formate phases on calcareous materials, magnesium formate on Sorel cement and dolomitic sandstone, lead formate on metal and pigments, cadmium formate on coated objects, as well as various copper and zinc formates on copper alloys. In the latter cases, formates dominate as glass-induced metal corrosion products. The formation of formates constitutes irreversible damage, degrading the material of heritage objects. Therefore, preventive conservation needs to remove all sources of carbonyl pollutants in order to avoid such corrosion.

Effect of metal formates on hydrothermolysis of organosolv lignin for the production of bio-oil

Fuel ◽  
2020 ◽  
Vol 271 ◽  
pp. 117573
Author(s):  
Syed Farhan Hashmi ◽  
Leena Pitkänen ◽  
Anne Usvalampi ◽  
Heidi Meriö-Talvio ◽  
Kyösti Ruuttunen ◽  
...  
Keyword(s):  
Organosolv Lignin ◽  
Bio Oil ◽  
Metal Formates

Alkalimetallformiate, V Die Kristallstruktur von Natriumformiat-Dihydrat, NaHCO2·2H2O [1] Alkali Metal Formates, V The Crystal Structure of Sodium Formate Dihydrate, NaHCO2·2H2O [1]

1994 ◽  
Vol 49 (9) ◽  
pp. 1179-1182 ◽  
Author(s):  
Kerstin Müller ◽  
Klaus-Jürgen Range ◽  
Anton M. Heyns
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Sodium Formate ◽  
Sodium Ions ◽  
Hydrogen Atoms ◽  
Orthorhombic Space Group ◽  
Bonding System ◽  
Water Oxygen ◽  
Metal Formates ◽  
Oxygen Atoms

Single crystals of sodium formate dihydrate, NaHCO2·2H2O, have been prepared from aqueous solutions of sodium formate, NaHCO2, via the trihydrate, NaHCO2-3H2O. They are orthorhombic, space group Cmca, with a = 7.070(4), b = 14.534(2), c = 8.706(2) Å and Z = 8. The structure, including the hydrogen atoms, was refined to R = 0.054, Rw = 0.065 for 479 unique reflections with I > 3 σ (I). It comprises buckled layers formed by NaO6 octahedra which are edge- and corner-sharing. The octahedral coordination of the sodium ions is achieved by two oxygen atoms from two different end-on bonded formate ions and four water oxygen atoms. The O···H distances show clearly that strong hydrogen bonds are not involved in the bonding system

Reaction of metal formates with a polymer in the frictional contact zone

1977 ◽  
Vol 12 (5) ◽  
pp. 820-822
Author(s):  
V. S. Dubrovskii ◽  
A. I. Sviridenok ◽  
V. G. Savkin ◽  
V. A. Struk ◽  
V. A. Belyi
Keyword(s):  
Contact Zone ◽  
Frictional Contact ◽  
Metal Formates

The polymorphism of alkali metal formates—Part I. A Raman study of the II-I transition in NaHCOO

1988 ◽  
Vol 49 (10) ◽  
pp. 1133-1137 ◽  
Author(s):  
A.M. Heyns ◽  
O.T. van Niekerk ◽  
P.W. Richter ◽  
K.-J. Range
Keyword(s):  
Alkali Metal ◽  
Raman Study ◽  
Metal Formates
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