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, seven solvents were selected as candidate diluters for methyl isobutyl ketone according to operating requirements, and a nonlinear programming (NLP) model based on ideal counter-current extraction was used.
Abstract: One of the key steps of coking wastewater treatment is phenolic and tar removal via extraction. However, the high loss of the extractant, i.e., methyl isobutyl ketone (MIBK), leads to the high cost of the process. The adoption of a novel solvent or solvent blend is considered as an efficient way to address this problem. In this paper, seven solvents (benzene, toluene, m-xylene, ethylbenzene, 1, 3, 5-trimethylbenze, cyclohexane, and octanol), selected as candidate diluters for MIBK according to operating requirements, are studied with a nonlinear programming (NLP) model based on ideal counter-current extraction. The results, verified with experiments, suggest toluene is the most promising candidate. Further investigation of this solvent blend reveals that both Dblend (the distribution coefficient of phenol between solvent blend and water) and mMIBK (the MIBK concentration in raffinate) increase with xMIBK (the molar fraction of MIBK in blend). The trade-off between the extraction performance and MIBK loss ...
16 citations
TL;DR: In this paper, the preparation and characterization of three bifunctional catalysts consisting of palladium supported on H-[Ga]ZSM5 zeolite, with a Si/Ga atomic ratio of 16 and Pd contents of 0.09, 0.50 and 1.02% were presented.
16 citations
TL;DR: The reliability of the experimental tie-line data was confirmed by the Hand and Othmer-Tobias equations as mentioned in this paper, and the NRTL and UNIQUAC models were used to correlate the experimental data and relevant binary interaction parameters were obtained.
Abstract: Liquid–liquid equilibria (LLE) data for the ternary methyl isobutyl ketone + phenol + water system have been determined at temperatures of (33315, 34315 and 35315) K under atmospheric pressure The reliability of the experimental tie-line data was confirmed by the Hand and Othmer–Tobias equations The NRTL and UNIQUAC models were used to correlate the experimental data, and relevant binary interaction parameters were obtained The experimental equilibrium compositions were successfully correlated by both models, with root-mean-square deviations <25 %, while the NRTL yielded even better correlation results According to the distribution coefficients and selectivities, methyl isobutyl ketone is an excellent extractant to recover phenol from wastewater even in the temperature range of 33315–35315 K, which offers considerable advantages over extraction at lower temperatures
16 citations
TL;DR: Excess molar enthalpies HEm of each of the four butanols + MEK or methyl isobutyl ketone (MIBK) were measured at the temperature 298.15 K.
16 citations
TL;DR: Quercetin (3,3′,4′,5,7-pentahydroxyflavone) chemically bonded through pyran rearrangement on modified controlled pore silica glass (QCPSG) with a capacity 0.213 mmol/g was used for solid phase extraction of some toxic metal and metalloid ions and the suggestedSolid phase extraction method was found accurate with no random error.
Abstract: Quercetin (3,3′,4′,5,7-pentahydroxyflavone) chemically bonded through pyran rearrangement on modified controlled pore silica glass (QCPSG) with a capacity 0.213 mmol/g was used for solid phase extraction of some toxic metal and metalloid ions. The newly designed QCPSG quantitatively sorbs As(V), Cd(II), Hg(II), and Pb(II) at the pH range 7.5–8.5 after 10 min of stirring. HCl (1 mol L − 1) instantaneously elutes all the metal ions. The sorption capacity of the ion collector is 0.42, 0.46, 0.53, and 0.49 mmol g − 1 for As(V), Cd(II), Hg(II), and Pb(II), respectively, whereas the preconcentration factor is 200. The effect of NaCl, Na2SO4, NaF, NaBr, Na3PO4, and other interfering salts on the sorption of metal ions (50 μg L − 1) was reported. Analytical detection limits of As(V), Cd(II), Hg(II), and Pb(II) were 4.18, 2.44, 15.86, and 25.00 pg mL − 1, respectively. QCPSG was used in the separation of the investigated metal ions from some natural water samples collected from diverse origins followed by determination by inductively coupled plasma–mass spectrometry. The data were compared with those obtained by the standard methods of determination using atomic absorption (hydride generation, HGAAS and after solvent extraction with ammonium pyrolidine dithiocarbamate/methyl isobutyl ketone). The suggested solid phase extraction method was found accurate with no random error.
16 citations