Reactivation of severely aged commercial three-way catalysts by washing with weak EDTA and oxalic acid solutions

2007 ◽  
Vol 71 (3-4) ◽  
pp. 185-198 ◽  
Author(s):  
S CHRISTOU ◽  
H BIRGERSSON ◽  
A EFSTATHIOU
Keyword(s):  
Oxalic Acid ◽  
Acid Solutions

Heterogeneous electron transfer as a pathway in the dissolution of magnetite in oxalic acid solutions

1983 ◽  
Vol 22 (16) ◽  
pp. 2224-2226 ◽  
Author(s):  
E. Baumgartner ◽  
M. A. Blesa ◽  
H. Marinovich ◽  
A. J. G. Maroto
Keyword(s):  
Electron Transfer ◽  
Oxalic Acid ◽  
Acid Solutions ◽  
Heterogeneous Electron Transfer

Oxalic acid and calcium oxalate produced by Leucostoma cincta and L. persoonii in culture and in peach bark tissues

1987 ◽  
Vol 65 (9) ◽  
pp. 1952-1956 ◽  
Author(s):  
J. A. Traquair
Keyword(s):  
Oxalic Acid ◽  
Calcium Oxalate ◽  
Crystal Morphology ◽  
Culture Media ◽  
Positive Staining ◽  
Acid Solutions ◽  
Calcium Oxalate Crystals ◽  
Oxalate Crystals ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes

Oxalic acid and crystals of calcium oxalate were produced during growth of Leucostoma cincta and L. persoonii on potato dextrose agar and in peach bark tissues. The identification of calcium oxalate was based on solubility characteristics, the results of KMnO4 titration, positive staining with silver nitrate – dithiooxamide, and crystal morphology as observed with light and scanning electron microscopes. Oxalic acid was detected by gas chromatography. This is the first report of oxalic acid production by both Leucostoma species causing peach canker. Calcium oxalate crystals observed on or near hyphae in culture were similar to crystals in artificially inoculated peach bark tissues. Addition of oxalic acid solutions alone to inner bark tissues caused maceration and necrosis. These results indicate a role for oxalic acid in the early stages of pathogenesis by Leucostoma spp. Tetragonal (bipyramidal) and prismatic calcium oxalate crystals formed on bark wounds treated with oxalic acid solutions were similar to those observed in infected tissues and in culture media amended with oxalic acid.

Metal oxalates in paints: a Raman investigation on the relative reactivities of different pigments to oxalic acid solutions

2010 ◽  
Vol 397 (2) ◽  
pp. 841-849 ◽  
Author(s):  
A. Zoppi ◽  
C. Lofrumento ◽  
N. F. C. Mendes ◽  
E. M. Castellucci
Keyword(s):  
Oxalic Acid ◽  
Acid Solutions

On the behaviour of copper in oxalic acid solutions

2007 ◽  
Vol 52 (19) ◽  
pp. 6012-6022 ◽  
Author(s):  
C. Gabrielli ◽  
L. Beitone ◽  
C. Mace ◽  
E. Ostermann ◽  
H. Perrot
Keyword(s):  
Oxalic Acid ◽  
Acid Solutions

Radiolytic gas formation under ?-irradiation of oxalic acid solutions

2004 ◽  
Vol 77 (11) ◽  
pp. 1818-1821
Author(s):  
N. N. Popova ◽  
Yu. V. Voronin ◽  
I. I. Byvsheva
Keyword(s):  
Oxalic Acid ◽  
Acid Solutions ◽  
Gas Formation
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