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 degradation rates of toluene, xylenes, methyl ethyl ketone (MEK), methyl isobutyl ketones (MIBK), and n-butyl acetate (n-BA) were investigated in a biotrickling filter reactor packed with polypropylene rings in a countercurrent air-water mode of operation.
Abstract: Interactions amongst the degradation rates of toluene, xylenes, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), and n-butyl acetate (n-BA) were investigated. Experiments were performed in a biotrickling filter reactor packed with polypropylene Pall rings in a counter-current air-water mode of operation. Under pseudo-steady-state conditions, the removal efficiency (RE) of the individual components in the middle of and at the effluent above the reactor bed was evaluated. By using a mixed microbial culture as the biocatalyst, the results revealed that an increased loading of toluene and xylene had a competitive effect on the RE of MIBK. After reaching a saturation point of the overall catabolic capacity of the biocatalyst, variations of RE were observed for the different components. This was most pronounced under conditions of overloading with the water-soluble components mixture. Despite such variations, the system was able to efficiently degrade this complex pollutant mixture for a period of 1 yr.
18 citations
TL;DR: A simple and rapid method has been developed for the extraction of Fe, Ni, Cr and Mn in drinking water samples with a new reagent, pentamethylene dithiocarbamate, into methyl isobutyl ketone (MIBK) and their subsequent determination by atomic-absorption spectrometry.
17 citations
TL;DR: The sensitivity of SML was improved considerably and found to be comparable to benchmark polymethylmethacrylate (PMMA) resist without affecting the aspect ratio performance.
Abstract: A detailed process characterization of SML electron beam resist for high-aspect-ratio nanopatterning at high sensitivity is presented. SML contrast curves were generated for methyl isobutyl ketone (MIBK), MIBK/isopropyl alcohol (IPA) (1:3), IPA/water (7:3), n-amyl acetate, xylene, and xylene/methanol (3:1) developers. Using IPA/water developer, the sensitivity of SML was improved considerably and found to be comparable to benchmark polymethylmethacrylate (PMMA) resist without affecting the aspect ratio performance. Employing 30-keV exposures and ultrasonic IPA/water development, an aspect ratio of 9:1 in 50-nm half-pitch dense grating patterns was achieved representing a greater than two times improvement over PMMA. Through demonstration of 25-nm lift-off features, the pattern transfer performance of SML is also addressed.
17 citations
TL;DR: In this paper, a bench scale system was used to measure the equilibrium adsorption isotherms of n-heptane, n-butanol, and methyl isobutyl ketone at a concentration range of 50 to 900 ppm on a Columbia JXC activated carbon.
Abstract: A bench scale system to measure adsorption of organic vapors on activated carbon is described in this report. The system was used to measure the equilibrium adsorption isotherms of n-heptane, n-butanol, and methyl isobutyl ketone at a concentration range of 50 to 900 ppm on a Columbia JXC activated carbon and the adsorption capacity of eleven additional solvents at a concentration of 365 ppm. It is found that the Polyani–Dubinin correlation describes the results well. Using n-heptane as a reference solvent, the mean error in the prediction of equilibrium adsorption capacity is 1.9% and the maximum error 7.2%.
17 citations
TL;DR: Trace impurities in tantalum have been isolated by extracting the tantalum matrix from aqueous solutions containing hydrofluoric and hydrochloric acid into methyl isobutyl ketone as mentioned in this paper.
17 citations