Retraction notice to: Phase behaviour of aqueous mixtures of acetic acid with isomers of xylene [J. Chem. Thermodyn. 67 (2013) 148–152]

2018 ◽  
Vol 121 ◽  
pp. 219
Author(s):  
Kh. Bahrpaima ◽  
H. Sajadi ◽  
A. Shafiee
Keyword(s):  
Acetic Acid ◽  
Phase Behaviour ◽  
Aqueous Mixtures ◽  
Retraction Notice

Self-assembly and phase behaviour of PEI : cationic surfactant aqueous mixtures forming mesostructured films at the air/solution interface

Soft Matter ◽  
2013 ◽  
Vol 9 (15) ◽  
pp. 4003 ◽  
Author(s):  
Hansel Comas-Rojas ◽  
Carlos Enríquez-Victorero ◽  
Stephen J. Roser ◽  
Karen J. Edler ◽  
Aurora Pérez-Gramatges
Keyword(s):  
Cationic Surfactant ◽  
Self Assembly ◽  
Phase Behaviour ◽  
Aqueous Mixtures ◽  
Solution Interface

Influence of Compressed Carbon Dioxide on the Oxidation of Cyclohexane with Hydrogen Peroxide in Acetic Acid

2006 ◽  
Vol 59 (3) ◽  
pp. 225 ◽  
Author(s):  
Liang Gao ◽  
Tao Jiang ◽  
Buxing Han ◽  
Baoning Zong ◽  
Xiaoxin Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Binary System ◽  
Reaction System ◽  
Phase Region ◽  
Phase Behaviour ◽  
Phase System ◽  
Two Phase ◽  
Three Phase

The oxidation of cyclohexane with H2O2 in a compressed CO2/acetic acid binary system was studied at 60.0 and 80.0°C, at pressures up to 18 MPa, and with the zeolite TS-1 as catalyst. The phase behaviour of the reaction system was also observed. There are three fluid phases in the reaction system at lower pressure but two at higher pressures. In the three-phase region the yields of the products, cyclohexanol and cyclohexanone, increase considerably with increasing pressure and reaches a maximum near the phase-separating pressure. CO2 can thus enhance the reaction effectively. However, the effect of pressure on the yield is very limited after the transition to a two-phase system.

scholarly journals Densities, viscosities, and thermal conductivities of the ionic liquid 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium acetate and its mixtures with water

2019 ◽  
Author(s):  
Zachariah Baird ◽  
Petri Uusi-Kyyny ◽  
Daniel Cederkrantz ◽  
Artur Dahlberg ◽  
Ville Alopaeus
Keyword(s):  
Ionic Liquid ◽  
Acetic Acid ◽  
Maximum Density ◽  
Equimolar Amount ◽  
Industrial Processes ◽  
Aqueous Mixtures ◽  
Protic Ionic Liquid ◽  
Density Data ◽  
Acid And Base ◽  
Thermal Conductivities

7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium acetate (mTBD acetate) is a protic ionic liquid that is being investigated for use in industrial processes, such as for producing textiles from cellulose. To aid in designing such processes, we have measured the densities, viscosities, and thermal conductivities of mTBD acetate and aqueous mixtures containing mTBD acetate. We also investigated how excess amounts of mTBD or acetic acid affect the density, and found that in general an excess of either component decreases the density. However, when no water is present, the sample with excess acetic acid actually has a slightly higher density than when there is an equimolar amount of acid and base. The maximum density occurs when some water is present (around 30-40 mol%). We also modeled the density data using the ePC-SAFT equation of state and provide simple correlations for calculating the viscosity and thermal conductivity of these mixtures.

The nitrous acid catalysed nitration of naphthalene. Evidence for a kinetic term that is second order with respect to the aromatic compound

1989 ◽  
Vol 67 (11) ◽  
pp. 1677-1682 ◽  
Author(s):  
J. Ramón Leis ◽  
M. Elena Pena ◽  
John H. Ridd
Keyword(s):  
Electron Transfer ◽  
Acetic Acid ◽  
Nitrous Acid ◽  
Order Term ◽  
Second Order ◽  
Rate Coefficients ◽  
Kinetic Term ◽  
Aqueous Mixtures ◽  
Electron Transfer Mechanism ◽  
First Order

The kinetic equation for the nitrous acid catalysed nitration of naphthalene in aqueous mixtures of sulphuric acid and acetic acid has at least two kinetic terms: one first order with respect to naphthalene and one second order with respect to naphthalene. The orders with respect to nitrous acid and nitric acid vary with the conditions in the way characteristic of the electron transfer mechanism of this reaction. The second-order term with respect to naphthalene is considered to derive from the formation of the dimeric radical cation (ArH)2+•. The acidity dependence of the rate coefficients and the absence of a normal isotope effect in the reaction of naphthalene-d8 are consistent with this interpretation. Keywords: naphthalene, nitration, nitrous acid.

scholarly journals Oxidation of tissue polysaccharides by periodic acid in dimethyl sulfoxide and its anhydrous and aqueous mixtures.

1977 ◽  
Vol 25 (3) ◽  
pp. 188-192 ◽  
Author(s):  
G I Malinin
Keyword(s):  
Acetic Acid ◽  
Dimethyl Sulfoxide ◽  
Periodic Acid ◽  
Periodate Oxidation ◽  
Polarized Light ◽  
Aqueous Mixtures ◽  
Selective Localization ◽  
Schiff Reaction ◽  
Derivatives Of ◽  
Anhydrous Acetic Acid

Periodic acid (1% w/v) solvated by anhydrous dimethyl sulfoxide (DMSO) readily induced a strong Schiff reaction in a variety of structures containing polysaccharides, but not glycogen. With the increasing amounts of water added to DMSO, glycogen was also oxidized, while the selective localization of other polysaccharides remained unimpaired. Periodate, solvated in the anhydrous acetic acid-DMSO mixture, rapidly induced concomitant oxidation of nucin and glycogen-containing structures. Sodium bisulfite addition derivatives of carbonyls, induced by periodate oxidation in DMSO, were stained meta- and orthochromatically with toluidine blue at controlled pH. Certain metachromatic tissue components were strongly birefringent in polarized light in contrast to the identical structures oxidized by aqueous periodate. Marked differences in staining reactions elicited in identical structures by periodate in DMSO as compared with aqueous periodate suggest that DMSO-periodate method considerably enhances the range of histochemical oxidations by periodate.

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