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, a procedure for the determination of microgram quantities of the elements vanadium, chromium, manganese, iron, cobalt, nickel, copper and zinc in sea water is described.
45 citations
TL;DR: In this paper, a hybrid purification process combining extraction and distillation for the production of levulinic acid (LA), furfural, and formic acid from lignocellulosic biomass was studied.
Abstract: A hybrid purification process combining extraction and distillation for the production of levulinic acid (LA), furfural, and formic acid (FA) from lignocellulosic biomass was studied. The effective process depends on the choice of appropriate extraction solvent. A comprehensive procedure of solvent selection for the LA production process was developed. A range of solvents were first evaluated by solvent screening, and processes using the three most promising solvents, including methyl isobutyl ketone (MIBK); furfural and octanol were then designed and optimized using an Aspen Plus simulator. These processes were evaluated in terms of the energy consumption, total annual cost, and environmental impact. As a result, MIBK showed the most favorable equilibrium for the extraction of LA but was unfavorable for FA extraction. Octanol showed not only the most favorable result in the extraction of FA, but was also favorable for the extraction of furfural and LA. Interestingly, furfural could extract more LA than o...
45 citations
TL;DR: A detailed review of the various processes involved in the breakdown treatment of niobium and tantalum primary sources, extraction and separation and newer processes of extraction as well as the various technique involved were discussed.
Abstract: Niobium and tantalum are chemically similar and are associated with each other in nature which makes it very difficult to separate. For many years, the separation of tantalum from niobium involved the fractional crystallization of potassium heptafluorotantalate away from potassium oxypentafluoroniobate monohydrate, this method has been supplanted by solvent extraction from fluoride-containing solutions by the use of solvent extractants such as Octanol, bis(2-ethylhexyl)phosphoric acid (DEHPA), Alamine 336, methyl isobutyl ketone (MIBK), tri-nbutyl phosphate (TBP) or cyclohexanone. A detailed review of the various processes involved in the breakdown treatment of niobium and tantalum primary sources, extraction and separation and newer processes of extraction as well as the various technique involved were discussed. Keyword: Niobium, Tantalum, Columbite, Tantalite, Solvent extractant and Solvent extraction.
43 citations
TL;DR: In this article, a modified H-USY zeolite was modified by treating with aqueous solution of H3PO4 and H2SO4 (10-30 wt %) Modified HUSY was completely characterized by XRD, NH3-TPD, energy dispersive analysis X-ray (EDAX), FT-IR, pyridine-IR and NMR Its catalytic performance was evaluated for the fructose conversion to 5-hydroxymethyl furfural (5-HMF) in methyl isobutyl ketone (MI
Abstract: Sustainable process and efficient heterogeneous acid catalyst for the preparation of platform chemicals like 5-hydroxymethyl furfural (5-HMF) from renewable source is much in demand in the context of heterogeneous catalysis Commercially available solid acid catalyst, H-USY zeolite was modified by treating with aqueous solution of H3PO4 and H2SO4 (10–30 wt %) Modified H-USY was completely characterized by XRD, NH3-TPD, energy dispersive analysis X-ray (EDAX), FT-IR, pyridine-IR, and NMR Its catalytic performance was evaluated for the fructose conversion to 5-HMF in methyl isobutyl ketone (MIBK)–water system Modified H-USY zeolite was identified to have potential in enhancement of 5-HMF yield up to 65% from 32% (parent H-USY) with minimum formation of furfural (8%) H-USY modified with 10 wt % H3PO4 (10P–Y) was found to be the best compared to other studied catalysts, namely, H-USY modified with 20 and 30 wt % H3PO4 (20 and 30P–Y) or 10–30 wt % H2SO4 (10- to 30S–Y) Best performance of 10P–Y is associat
43 citations
TL;DR: In this article, Zeolite H-ZSM-5 doped with Pt nanoparticles was found to be a highly efficient catalyst for gas-phase hydrogenation of MIBK to methylpentanes with >99% yield at 200°C.
43 citations