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.

Aqueous-Natural Deep Eutectic Solvent-Enhanced 5-Hydroxymethylfurfural Production from Glucose, Starch, and Food Wastes

Abstract: 5-Hydroxymethylfurfural (HMF) has been regarded as an essential building block for synthesizing chemicals and biofuels, but the direct conversion of biomass to HMF is still a critical challenge. In this study, a cheap and green aqueous-natural deep eutectic solvent (A-NADES) was used to efficiently produce HMF from various carbohydrates, with a low amount of SnCl4 as the catalyst. High HMF yields of 64.3, 64.0, 61.3, and 54.5 % were obtained from glucose, starch, rice waste, and bread waste at 130 °C in the A-NADES/MIBK (methyl isobutyl ketone) biphasic system, respectively. Mechanistic study results revealed that the water in A-NADES was the key factor in facilitating the conversion of Sn atom existent forms and promoted the HMF production. The choline chloride in NADES stabilized the HMF product with the cooperation of extraction solvent MIBK and inhibited the side reactions of HMF. This study investigated the multiple interaction functions of A-NADES to feedstocks and proposed a practical application of novel solvents to facilitate biomass and food waste conversion with a green method.

Performance of Trickle-Bed Air Biofilter: A Comparative Study of a Hydrophilic and a Hydrophobic Voc

Abstract: Two lab-scale trickle-bed air biofilters were operated for investigating the difference in performance between a hydrophilic and a hydrophobic volatile organic compound (VOC) Methyl isobutyl ketone (MIBK) and styrene were selected as a model hydrophilic and hydrophobic VOCs, respectively Effects of loading rates, biofilter re-acclimation, removal profile along biofilter depth, nitrogen consumption, and CO2 production were compared under three operating conditions, namely, backwashing and two non-use periods (starvation and stagnant)

Effect of eight solvents on ethanol analysis by Dräger 7110 Evidential breath analyzer.

Abstract: The Drager 7110 MK III FIN Evidential breath analyzer is classified as a quantitative analyzer capable to provide sufficient evidence for establishing legal intoxication. The purpose of this study was to evaluate ethanol specificity of this instrument in the presence of other solvents. Effects of eight possible interfering compounds on ethanol analysis were determined in a procedure simulating a human breathing. Most of the compounds studied had either a negligible effect on ethanol analysis (acetone, methyl ethyl ketone, and methyl isobutyl ketone) or were detected in very low concentrations before influencing ethanol readings (methanol, ethyl acetate, and diethyl ether). However, 1-propanol and 2-propanol increased the ethanol readings significantly. Thus, DrA¤ger ethanol readings should be interpreted carefully in the presence of propanol. Language: en

A Rapid Method for the Determination of Gold in Rocks, Ores and Other Geological Materials by F-AAS and GF-AAS After Separation and Preconcentration by DIBK Extraction for Prospecting Studies

Abstract: A solvent extraction method using diisobutyle ketone (DIBK) is designed for the accurate and precise estimation of very low concentrations of gold in rocks, ores and other geological samples. 30 g sample was digested using aqua regia after roasting and gold content was extracted into DIBK phase consisting of Aliquat™ 336 and estimated by flame atomic absorption spectrometer (F-AAS). Samples having gold concentration <0.1 μg/g were estimated using graphite furnace atomic absorption spectrometer (GF-AAS). Results of DIBK extraction were compared to those obtained by other well established methods, such as classical Pb-fire assay and methyl isobutyl ketone (MIBK)-AAS methods. Comparison was also made with results obtained by the direct determination of gold by inductively coupled plasma mass spectrometry (ICP-MS) technique. The analytical results for international gold reference materials measured by the proposed method were in close agreement with those obtained by other well established methods and recommended values. Detection limits (20 ng/g by F-AAS, 0.1 ng/g by GF-AAS and 0.01 ng/g by ICP-MS) of gold (3 σ × total procedure blank) is very low and could be further improved by using high pure acids and other reagents.

Preparation of thermoplastic polyurethane resin

Abstract: PURPOSE: To prepare the titled resin having high Young's modulus and soluble in a ketone solvent or in a mixture of ketone and an aromatic hudrocarbon, by reacting a specific polymeric diol, a low-molecular diol, an organic diisocyanate and a reaction terminator using an organic solvent. CONSTITUTION: The objective resin is prepared by reacting (A) a polymeric diol having an average molecular weight of 500W5,000, (B) a low-molecular diol having an average molecular weight of ≤, and (C) an organic diisocyanate in (D) a solvent such as methyl isobutyl ketone, and adding (E) a reaction terminator having one or more active hydrogen atoms such as isopropanol to the reaction mixture. The amount of the component (A) is 1W30(wt)% of the sum of the components (A), (B) and (C), and the ratio of the total number of OH groups in the component (A) and the component (B) to the number of isocyanate groups in the component (C) is adjusted to 1/(1.0W1.1). COPYRIGHT: (C)1982,JPO&Japio