Topic
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.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, a simple back-extraction method was developed for the separation and preconcentration of trace levels of zinc from different matrices, which was used as new complexing agent for the extraction of zinc(II) from the aqueous sample phase to the methyl isobutyl ketone (MIBK) phase as Zn(EMPC)2 complexes.
Abstract: A simple back-extraction method was developed for the separation and preconcentration of trace levels of zinc from different matrices. Ethyl-2-(4-methoxybenzoyl)-3-(4-methoxyphenyl)-3-oxopropanoylcarbamate (EMPC) was used as a new complexing agent for the extraction of zinc(II) from the aqueous sample phase to the methyl isobutyl ketone (MIBK) phase as Zn(EMPC)2 complexes. The Zn(II) can be selectively stripped with 1 mL of 0.5 mol L−1 HCl from Mn+(EMPC)n complexes [Ag(I), Al(III), Cd(II), Cr(III), Cu(II), Fe(II), Fe(III), Mn(II), Ni(II), Pb(II) and Pd(II)] which dissolved in MIBK phase. Some experimental parameters, which are important for the whole extraction process, including pH, sample volume, shaking time, amount of the EMPC reagent, amount of MIBK, ionic strength, and type of back-extractant were investigated. The recovery for Zn(II) was greater than 95%. The detection limit of the method was found to be 0.2 µg L − 1 and the relative standard deviation as 6.4%. The concentrations of Zn(II) in the c...
13 citations
TL;DR: In this paper, a solvent extraction, flame atomic absorption analytical scheme is reported for the elements Au, Tl, Sb, Ga, Mo, Cu, Ni, Co, Ag, Bi, Cd, Pb, Zn and Mn in geological materials.
13 citations
TL;DR: In this paper, a coupled biological fluidized bed system, operated in the pre-denitrification mode, was used to evaluate its potential in implementing nitrogen removal from raw and diluted coking plant wastewaters and coal liquefaction condensates.
Abstract: A coupled biological fluidized bed system, operated in the pre‐denitrification mode, was used to evaluate its potential in implementing nitrogen removal from raw and diluted coking plant wastewaters and coal liquefaction condensates. The latter wastewater was also subjected to pretreatment by solvent extraction with light oil, methyl isobutyl ketone (MIBK) and 2‐octanone, and anaerobic degradation to evaluate the improvement in nitrification. Complete nitrification and denitrification was achieved for raw and diluted coking plant wastewater and for diluted and solvent extracted coal liquefaction condensates. Maximum specific nitrification rates increased with increasing dilution. Increased intensity of pretreatment led to stable nitrification at lower dilutions. Anaerobic pretreatment offered a possible alternative to solvent extraction. A complex tradeoff exists between the intensity of pretreatment, the degree of dilution and the size of the downstream biological treatment system.
13 citations
TL;DR: Excess volume data on mixing for binary mixtures of 1,1,1-trichloroethane with methyl ethyl ketone, methyl isobutyl ketones, acetophenone, cyclohexanone and n -bytyl acetate have been measured as a function of composition at 303.15 K.
13 citations
Patent•
10 May 2000TL;DR: In this article, a method for the preparation and usage of these compounds, their salts and their tautomers; pesticides whose active ingredient is selected from these compounds and where appropriate their salts, a method of these compositions and their usage, are described.
Abstract: Compounds of formula (I) wherein r and s, independently of each other, signify any value between 0.00 and 12.00; and L is methanol, ethanol, propanol, isopropanol, butanol, isobutanol, t-butanol, cyclohexanol, tetrahydrofurfuryl alcohol, ethylene glycol, glycerol, methyl acetate, ethyl acetate, ethyl lactate, butyrolactone, ethylene carbonate, propylene carbonate, acetonitrile, dimethyl sulphoxide, dimethylformamide, dimethylacetamide, N-methyl-2-pyrrolidone, N-octyl-2-pyrrolidone, N-decyl-2-pyrrolidone, acetone, butanone, methyl isobutyl ketone, methylpropyl ketone, acetophenone, cyclohexanone, methylene chloride, trichloromethane, trichloroethane, tetrahydrofuran, diethylether, 1,2-dimethoxyethane, dioxane, methyl-tert.-butylether, ethanolamine, pyridine, chlorobenzene, toluene, xylene or tetramethylurea; with the proviso that r and s are not simultaneously 0; in each case in free form or in salt form, and their tautomers, in each case in free form or in salt form; a method for the preparation and usage of these compounds, their salts and their tautomers; pesticides whose active ingredient is selected from these compounds and their tautomers; and a method for the preparation of these solvates and where appropriate their salts, a method for the preparation of these compositions and their usage, are described.
13 citations