Solubility of solid acetic acid in liquid organic solvents

1983 ◽  
Vol 28 (3) ◽  
pp. 328-330 ◽  
Author(s):  
Renzo Carta ◽  
Stella Dernini
Keyword(s):  
Acetic Acid ◽  
Organic Solvents

scholarly journals Dinuclear thiazolylidene copper complex as highly active catalyst for azid–alkyne cycloadditions

2016 ◽  
Vol 12 ◽  
pp. 1566-1572 ◽  
Author(s):  
Anne L Schöffler ◽  
Ata Makarem ◽  
Frank Rominger ◽  
Bernd F Straub
Keyword(s):  
Acetic Acid ◽  
Organic Solvents ◽  
Copper Complex ◽  
Room Temperature ◽  
Active Catalyst ◽  
Catalyst Design ◽  
Ancillary Ligand ◽  
Click Reactions ◽  
Highly Active ◽  
Cost Efficient

A dinuclear N-heterocyclic carbene (NHC) copper complex efficiently catalyzes azide–alkyne cycloaddition (CuAAC) “click” reactions. The ancillary ligand comprises two 4,5-dimethyl-1,3-thiazol-2-ylidene units and an ethylene linker. The three-step preparation of the complex from commercially available starting compounds is more straightforward and cost-efficient than that of the previously described 1,2,4-triazol-5-ylidene derivatives. Kinetic experiments revealed its high catalytic CuAAC activity in organic solvents at room temperature. The activity increases upon addition of acetic acid, particularly for more acidic alkyne substrates. The modular catalyst design renders possible the exchange of N-heterocyclic carbene, linker, sacrificial ligand, and counter ion.

Self-association of acetic acid in some organic solvents

1988 ◽  
Vol 92 (23) ◽  
pp. 6768-6772 ◽  
Author(s):  
Yukio Fujii ◽  
Hiromichi Yamada ◽  
Masateru Mizuta
Keyword(s):  
Acetic Acid ◽  
Organic Solvents ◽  
Self Association

Water Content of Organic Solvents and their Relationship to Extraction of Nitric and Acetic Acid from UREX+ Streams

2013 ◽  
Vol 48 (14) ◽  
pp. 2164-2169 ◽  
Author(s):  
Travis H. Russell ◽  
Robert M. Counce ◽  
Jack S. Watson ◽  
Barry B. Spencer ◽  
Guillermo D. Del Cul
Keyword(s):  
Acetic Acid ◽  
Water Content ◽  
Organic Solvents

Crystal nucleation of salicylic acid in organic solvents

CrystEngComm ◽  
2015 ◽  
Vol 17 (21) ◽  
pp. 3961-3973 ◽  
Author(s):  
Donal Mealey ◽  
Denise M. Croker ◽  
Åke C. Rasmuson
Keyword(s):  
Acetic Acid ◽  
Salicylic Acid ◽  
Ethyl Acetate ◽  
Organic Solvents ◽  
Induction Time ◽  
Crystal Nucleation ◽  
Metastable Zone Width ◽  
Zone Width ◽  
Metastable Zone

Nucleation of salicylic acid in different solvents becomes gradually more difficult in the order: chloroform, ethyl acetate, acetonitrile, acetone, methanol and acetic acid. By comparing the results of metastable zone width and induction time experiments new insights are obtained.

scholarly journals Pervaporative Dehydration of Organic Solvents Using High-Silica CHA-Type Zeolite Membrane

Membranes ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 229
Author(s):  
Yasuhisa Hasegawa ◽  
Chie Abe ◽  
Ayumi Ikeda
Keyword(s):  
Acetic Acid ◽  
Organic Solvents ◽  
Acetic Acid Solution ◽  
Secondary Growth ◽  
Zeolite Membrane ◽  
Separation Factors ◽  
Al2o3 Support ◽  
Type Zeolite ◽  
High Silica ◽  
Α Al2o3

A high-silica chabazite (CHA) type zeolite membrane was prepared on the porous α-Al2O3 support tube by the secondary growth of seed particles. The dehydration performances of the membrane were determined using methanol, ethanol, 2-propanol, acetone, acetic acid, methyl ethyl ketone (MEK), tetrahydrofuran (THF), N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and N-methyl-2-pyrolidone (NMP) at 303–373 K. As a result, the dehydration performances of the membrane were categorized to following three types: (1) 2-propanol, acetone, THF, and MEK; (2) ethanol and acetic acid; and (3) methanol, DMF, and DMSO, and NMP. The adsorption isotherms of water, methanol, ethanol, and 2-propanol were determined to discuss the influences of the organic solvents on the permeation and separation performances of the membrane. For 2-propanol, acetone, MEK, and THF solutions, the high permeation fluxes and separation factors were obtained because of the preferential adsorption of water due to molecular sieving. In contrast, the permeation fluxes and separation factors were relatively low for methanol, DMF, and DMSO, and NMP solutions. The lower dehydration performance for the methanol solution was due to the adsorption of methanol. The permeation fluxes for ethanol and acetic acid solution were ca. 1 kg m−2 h−1. The significantly low flux was attributed to the similar molecular diameter to the micropore size of CHA-type zeolite.

Adsorption studies of acetic acid dimers on activated charcoal from organic solvents

1994 ◽  
Vol 106 (4) ◽  
pp. 893-902
Author(s):  
J. Santhanalakshmi ◽  
S. Balaji ◽  
Thirumalaiswamy Raja
Keyword(s):  
Acetic Acid ◽  
Organic Solvents ◽  
Activated Charcoal ◽  
Adsorption Studies

scholarly journals SYNTHESIS AND COORDINATION PROPERTIES OF COBALT COMPLEXES OF 5-PHENYL-2,3,7,8,12,18-HEXAMETHYL-13,17-DIETHYLPORPHYRIN AND ITS NITRO-SUBSTITUTED IN ORGANIC SOLVENTS

2018 ◽  
Vol 61 (7) ◽  
pp. 44 ◽  
Author(s):  
Elizaveta M. Kuvshinova ◽  
Maria A. Bykova ◽  
Irina A. Vershinina ◽  
Olga V. Gornukhina ◽  
Tatyana V. Lyubimova ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Organic Solvents ◽  
Reaction Rate ◽  
Bathochromic Shift ◽  
Cobalt Complexes ◽  
Electronic Effects ◽  
Metal Porphyrin ◽  
Absorption Bands ◽  
Coordination Properties ◽  
Tetrapyrrole Macrocycle

5-Phenyl-2,3,7,8,12,18-hexamethyl-13,17-diethylporphyrin (1), 5-phenyl-10,20-dinitro-2,3,7,8,12,18-hexamethyl -13,17-diethylporphyrin (2), 5- (p-nitrophenyl) -2,3,7,8,12,18-hexamethyl-13,17-diethylporphyrin (3) weresynthesized. The kinetics of formation and dissociation of their cobalt complexes in pyridine and acetic acid was studied. It was found that the change in reactivity upon transition from porphyrin 1 to 2 during complexation in acetic acid is due to an increase in the degree of deformation of the tetrapyrrole aromatic nucleus and the electronic effect of nitro groups. This is manifested by a strong bathochromic shift of all absorption bands in electronic spectra. It is shown that the opposite effect of the deformation effect and the i-effect of nitro groups on the rate of the reaction of formation of metal porphyrin leads to an insignificant change in the kinetic parameters. In pyridine, which has weakly basic properties, the reaction rate increases sharply with the introduction of nitro groups at position of 10, 20 of the porphyrin core. This is due to the fact that the deviation of the tetrapyrrole macrocycle from planarity leads to an increase in the reaction rate. It was found that a spherical distortion of the planar structure of porphyrins (1-3) in the series 1<3<2 relatively slightly influence on the rate of dissociation of their cobalt complexes. Apparently, this is due to the fact that coordination of the cobalt cation leads to a more flat structure of the tetrapyrrole macrocycle and the electronic effects of the nitro groups is the main contribution to the rate of the dissociation reaction of porphyrins (1-3).Forcitation:Kuvshinova E.M., Bykova M.A., Vershinina I.A., Gornukhina O.V., Lyubimova T.V., Semeikin A.S. Synthesis and coordination properties of cobalt complexes of 5-phenyl-2,3,7,8,12,18-hexamethyl-13,17-diethylporphyrin and its nitro-substituted in organic solvents. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 7. P. 43-48

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