233 C2H6O5 Formic acid - water (2/1)

2010 ◽  
pp. 453-453
Author(s):  
J. Demaison
Keyword(s):  
Formic Acid ◽  
Acid Water

Isothermal phase behavior of Nylon-6, -66, and -610 polyamides in formic acid–water systems

1994 ◽  
Vol 32 (7) ◽  
pp. 1183-1190 ◽  
Author(s):  
Liao-Ping Cheng ◽  
An-Hwa Dwan ◽  
Carl C. Gryte
Keyword(s):  
Formic Acid ◽  
Phase Behavior ◽  
Nylon 6 ◽  
Water Systems ◽  
Acid Water

Use of n-Butanol - Formic Acid - Water Mixture in the Paper Chromatography of Amino-Acids and Sugars

Nature ◽  
1952 ◽  
Vol 170 (4320) ◽  
pp. 279-280 ◽  
Author(s):  
L. F. WIGGINS ◽  
J. HOWARTH WILLIAMS
Keyword(s):  
Amino Acids ◽  
Formic Acid ◽  
Paper Chromatography ◽  
Acid Water ◽  
Water Mixture

scholarly journals Electrochemical determination of acidity level and dissociation of formic acid/water mixtures as solvent

2007 ◽  
Vol 52 (19) ◽  
pp. 5773-5780 ◽  
Author(s):  
J.S. Jaime Ferrer ◽  
E. Couallier ◽  
M. Rakib ◽  
G. Durand
Keyword(s):  
Formic Acid ◽  
Electrochemical Determination ◽  
Acid Water ◽  
Acidity Level

scholarly journals Optimization of the Process of Abies Wood Peroxide Delignification in the Medium “Formic Acid-Water” in the Presence of TiO₂ Catalyst

2019 ◽  
pp. 522-535
Author(s):  
Natalya V. Garyntseva ◽  
Irina G. Sudakova ◽  
Anna I. Chudina ◽  
Yuri N. Malyar ◽  
Boris N. Kuznetsov
Keyword(s):  
Molecular Weight ◽  
Formic Acid ◽  
Lignin Content ◽  
Average Molecular Weight ◽  
Mathematical Optimization ◽  
Acid Water ◽  
Water Medium ◽  
Residual Lignin ◽  
Acetic Acid Water ◽  
Peroxide Delignification

The experimental and mathematical optimization of abies wood peroxide delignification process in the formic acid – water medium in the presence of TiO₂ catalyst was carried out. It was established that in the temperature range 70-100 °С the rate constants of the delignification process vary between 0.4 and 3.2 · 10-4 min-1. The optimal parameters for the production of cellulose product with a residual lignin content of ≤ 3 wt.% were determined (temperature 100 °С, concentration Н₂О₂ 10 wt.%, НCOOН 38 wt.%, LWR 15, time 4 h). The features of abies wood peroxide delignification processes in the presence of TiO₂ catalyst in “ formic acid – water” and “acetic acid – water” were compared. It was shown the possibility of abies wood fractionation in the medium “ formic acid-water” to high-quality cellulose with the yield of 94 wt.% (the content of residual lignin 2.3 wt.%) and to low molecular weight lignin with the yield of 21 wt.% (average molecular weight 1854 g/mol and polydispersity 1.65). The obtained chemically active lignin can be used for the production such valuable products as enterosorbents, nanoporous carbon materials, aerogels

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