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Methyl isobutyl ketone

About: Methyl isobutyl ketone is a research topic. Over the lifetime, 2071 publications have been published within this topic receiving 26976 citations. The topic is also known as: Hexone & Isobutyl methyl ketone.


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Journal ArticleDOI
TL;DR: In this article, a comparison of extractant dependency of the K for Eu(III) is made for toluene (non hydrogen bonding), Hexone (hydrogen bond acceptor), and n-decanol (hydgen bond donor and acceptor) as diluent, showing H2[EHP] to be the more promising extracting for mutual separation of lanthanides (III).

29 citations

Journal ArticleDOI
TL;DR: Here, the applicability of cellulose and amylose tris(3,5-dimethylphenylcarbamate) as chiral selectors for the separation of enantiomers by counter-current chromatography (CCC) is studied.

29 citations

Journal ArticleDOI
TL;DR: In this article, a hollow fiber "shell and tube bundle" unit was used for the extraction of phenol from aqueous solution, where various solvents (n-hexanol, n-octanol, ii-decanol, methyl isobutyl ketone, and n-butyl acetate) were used on the shell side; the phenol solution was pumped through the tube side.
Abstract: The extraction of phenol from aqueous solution was studied in a novel type of device—a hollow fiber “shell and tube bundle” unit. The need for coalescence and settling of the two phases involved is avoided with this type of contacting scheme. Various solvents (n-hexanol, n-octanol, ii-decanol, methyl isobutyl ketone, and n-butyl acetate) were used on the shell-side; the phenol solution was pumped through the tube-side. In other runs, powdered activated carbon was packed into the shell-side. The effects of solvent type, powdered carbon use, feed stream flow rate, and the addition of acid or base to the feed were studied. A successful mathematical model for the system was developed.

29 citations

Journal ArticleDOI
TL;DR: In this article, five laboratory solvent extraction methods for the determination of leachable trace metals from municipal incinerator fly and bottom ashes are evaluated, and the trace elements of interest were cadmium, chromium, copper, manganese and lead.
Abstract: Five laboratory solvent extraction methods for the determination of leachable trace metals from municipal incinerator fly and bottom ashes are evaluated. The trace elements of interest were cadmium, chromium, copper, manganese and lead. Five different extractants, 0.1NHCl, 1.0 N ammonium acetate, methyl isobutyl ketone (MIBK), chloroform and hexane were used on each ash to determine comparative extraction efficiencies. Extraction efficiencies of the five solvents were determined based on total metal concentration, and were found to rank in the following order: 0.1NHCl<1.0N ammonium acetate < MIBK < chloroform < hexane. No one solvent was optimal for obtaining environmentally available values for all five metals. The inorganic solvents, 0.1NHCl and 1.0N ammonium acetate, exhibited higher removal of trace metals from ash particles relative to the organic solvents. Manganese concentrations were removed more efficiently by 0.1NHCl, whereas 1.0 N ammonium acetate was more efficient for removing copper...

29 citations

Journal ArticleDOI
TL;DR: The model predicts that high equilibrium yields of butyric acid can be achieved only in the absence of ammoniolysis or in the presence of a separate water phase, however, high yields ofbutyramide should be possible if the water concentration is fixed at a low level and a more suited source of ammonia is applied.
Abstract: Enzymatic ester hydrolysis and ammoniolysis were performed as competitive reactions in methyl isobutyl ketone without a separate aqueous phase. The reaction system contained solid ammonium bicarbonate, which dissolved as water, ammonia, and carbon dioxide. During the reaction an organic liquid phase, a vapor phase, and at least one solid phase are present. The overall equilibrium composition of this multiphase system is a complex function of the reaction equilibria and several phase equilibria. To gain a quantitative understanding of this system a mathematical model was developed and evaluated. The model is based on the mass balances for a closed batch system and straightforward relations for the reaction equilibria and the solubility equilibria of ammonium bicarbonate, the fatty acid ammonium salt, water, ammonia, and carbon dioxide. For butyl butyrate as a model ester and Candida antarctica lipase B as the biocatalyst this equilibrium model describes the experiments satisfactorily. The model predicts that high equilibrium yields of butyric acid can be achieved only in the absence of ammoniolysis or in the presence of a separate water phase. However, high yields of butyramide should be possible if the water concentration is fixed at a low level and a more suited source of ammonia is applied.

29 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202314
202230
202137
202045
201972
201872