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.

Copper catalyst for vapor catalytic dehydrogenation of methyl isobutyl alcohol and its preparation process and application method

Abstract: The copper catalyst for vapor catalytic dehydrogenation of methyl isobutyl alcohol is prepared with the materials including Cu(NO3)2.3H2O 5-10 weight portions, Zn(NO3)2.6H2O 1-10 weight portions, Al(NO3)3.9H2O 1-5 weight portions and alkaline carbonate precipitant 5-20 weight portions, and through co-precipitation and roasting formation. The copper catalyst is used in dehydrogenating methyl isobutyl alcohol to prepare methyl isobutyl ketone in tubular fixed bed reactor. The copper catalyst has relatively high dehydrogenating stability and relatively long service life; results in relatively low reaction temperature of dehydrogenating methyl isobutyl alcohol to synthesize methyl isobutyl ketone, single pass conversion of 60-82 %, selectivity of 96-99 %, multiple pass conversion over 99 % and multiple pass reaction selectivity over 98 %; and may be used in industrial production.

Determination of microgram amounts of tellurium in steels by atomic absorption spectrometry

Abstract: A solvent extraction procedure has been developed for the determination of tellurium in all types of steel. After dissolution, the sample is extracted with trioctylphosphine oxide-methyl isobutyl ketone. The extract is then nebulized directly into the atomic absorption burner flame. This method requires 25 minutes and can determine as low as 2 parts per million level tellurium.

Investigation of Diluent Effect on Extraction of Citric Acid by Trioctyl Methyl Ammonium Chloride + Organic Solutions

Abstract: Organic solutions of amines are increasingly being used to separate organic acids from aqueous solutions by reactive extraction. This article deals with experimental investigations of the extraction of citric acid using mixtures of trioctyl methylammonium chloride + cyclohexane, 2,2,4-trimethyl pentane, 1-butanol, toluene, methyl isobutyl ketone, and ethyl acetate. All measurements were carried out at 298.15 K. Experimental results of batch extraction experiments are reported as distribution coefficients (D), loading factors (Z), and extraction efficiency (E). The maximum extraction efficiency of citric acid has been found to be 57% with 2,2,4-trimethyl pentane and methyl isobutyl ketone for 1.74 mol·L-1 initial concentration of trioctyl methylammonium chloride

Enhancement of mass transfer through bubbling effect during extraction and reaction in biphasic systems containing ionic liquid

Abstract: Separation of a compound from an ionic liquid through extraction usually results in a low mass transfer rate because of the high viscosity of the ionic liquid and the large density difference between the ionic liquid and organics even under strong stirring An improved interface mass transfer during extraction or biphasic reaction was realized by creating a bubbling effect in a biphasic system containing an ionic liquid In a model biphasic system containing 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) as the solvent phase and methyl isobutyl ketone (MIBK) as the extraction phase, the bubbling reagents partitioned in the [BMIM]Cl phase, such as methanol, ethanol and acetonitrile, exhibit dynamic equilibrium between the two phases through constant gasification from and dissolution into the [BMIM]Cl phase Bubbling increases the interface area and dynamically enhances the turbulence of the mixture; both phenomena are beneficial for fast transfer of 5-hydroxymethylfurfural from the ionic liquid phase to the extraction phase The organic solvents suitable as bubbling reagents were identified, and the key parameters in establishing bubbling biphasic systems were determined