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.
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TL;DR: In this article, the catalytic oxidation of methyl-isobutyl-ketone (MIBK) in low concentration was investigated over HFAU, NaFAU (X and Y), and CsFAU(X, Y) zeolites.
Abstract: The catalytic oxidation of methyl-isobutyl-ketone (MIBK) in low concentration was investigated over HFAU, NaFAU (X and Y) and CsFAU (X and Y) zeolites. For a given reaction temperature, the following activity pattern was observed for the conversion into CO2: CsX>NaX>CsY>NaY>HFAU. The complete conversion of MIBK into CO2 was observed at 300 °C over CsX zeolite, and this exceptional performance is reported for the first time. A linear relationship between the conversion into CO2 and the basic strength of the zeolites was found.
32 citations
TL;DR: In this paper, a biphasic system with methyl isobutyl ketone (MIBK) as an organic solvent was applied to enhance the transfer of 5-HMF from aqueous phase.
Abstract: A continuous packed-bed reactor was applied for the synthesis of 5-HMF via dehydration of fructose. Cation exchange rasin functionalized with sulfonic acid groups; -HSO3 was used as catalyst. 1-methyl-2-pyrrolidinone (NMP) was used as aqueous solvent to partially substitute water. A biphasic system with methyl isobutyl ketone (MIBK) as organic solvent was applied to enhance the transfer of 5-HMF from aqueous phase. Effects of reaction temperature (90–120 °C), residence time (10–60 min), water content in the aqueous phase (30–100 %wt.), and organic-to-aqueous ratio (1:1–4:1) on the conversion of fructose, %yield and selectivity of 5-HMF, and extraction ratio were investigated. High yield of 5-HMF was obtained with increasing reaction temperature or reaction time. Adding NMP enhanced the fructose conversion and selectivity toward 5-HMF to 91.67% and 99.76% at 120 °C, residence time of 30 min, NMP-to-water ratio of 7:3, and organic-to-aqueous ratio of 4:1, while the extraction ratio was 81.83%.
32 citations
TL;DR: In this paper, a preconcentration, speciation and separation with solvent extraction of Fe(III) from samples of different origin, using methyl isobutyl ketone (MIBK) as a solvent and the sodium salt of 2-carboethoxy-1,3-indandione (CEIDNa), as a complexing agent for Fe (III), were studied.
32 citations
TL;DR: In this paper, the excess enthalpies of binary liquid mixtures of N-methyl-2-pyrrolidone (NMP) with ketones, as a function of composition, were measured using a solution calorimeter.
Abstract: Excess enthalpies (HE), at ambient pressure and 298.15 K, have been measured by using a solution calorimeter for the binary liquid mixtures of N-methyl-2-pyrrolidone (NMP) with ketones, as a function of composition. The ketones chosen in the present investigation were methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), and cyclohexanone (CH). The HE values were measured using a new Parr 1451 solution calorimeter and were negative over the entire mole fraction range for NMP with MEK and were positive for NMP with MIBK or CH. The excess enthalpy data have also been correlated with the Redlich−Kister equation. Furthermore, the vapor−liquid equilibrium (VLE) data were measured at 95.3 kPa for these mixtures, of different compositions, with the help of the Swietoslawski ebulliometer. The experimental temperature−mole fraction (T−x) data were used to compute Wilson parameters and then used to calculate the equilibrium vapor-phase compositions. The intermolecular interactions and structural effects were an...
32 citations
TL;DR: In this paper, a biphasic system consisting of methyl isobutyl ketone and H2O was achieved for a highly integrated one-pot catalytic transformation and delignification process of lignocellulosic biomass.
Abstract: A biphasic system, consisting of methyl isobutyl ketone and H2O, has been achieved for a highly integrated one-pot catalytic transformation and delignification process of lignocellulosic biomass. Using SO3H-functionalized ionic liquids as catalysts, 85.8% of bagasse can be fractionated into 71.4% water-soluble chemicals at 76.3% lignin extraction ratio, under the optimized conditions. The practicability of this biphasic system for other typical biomass sources has also been tested with high efficiency, viz., 79.6 to 91.9% lignin extraction ratio of corncob, corn stalk, rice husk, and rice straw with 56.6 to 72.8% water-soluble chemicals yield at 64.8 to 81.3% feed conversion.
32 citations