Topic
Butanone
About: Butanone is a research topic. Over the lifetime, 697 publications have been published within this topic receiving 6806 citations. The topic is also known as: MEK & methylethyl ketone.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: In this article, a direct synthesis of ethyl acetate from ethanol over a Cu-Zn-Zr-Al-O catalyst was investigated under pressured conditions between 473 and 533 K.
148 citations
TL;DR: Rate constants of activation (kact) for the reactions of tertiary alkyl halides with the ATRP catalyst CuIBr/1,1,4,7,10,10-hexamethyltriethylenetetramine (HMTETA) have been determined in 14 different solvents and the effect of increasing amounts of monomer in a solvent on the activation rate has been analyzed.
Abstract: Rate constants of activation (kact) for the reactions of tertiary alkyl halides with the ATRP catalyst CuIBr/1,1,4,7,10,10-hexamethyltriethylenetetramine (HMTETA) have been determined in 14 different solvents. The measurements have been performed at 25 °C by spectrophotometrically following the time-dependent absorbances of the CuII species. A large excess of 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO), which quantitatively trapped the alkyl radicals, ensured the irreversible generation of CuII. The rate constant for the least active solvent butanone is 30 times smaller than that of the most active solvent DMSO. In addition, the effect of increasing amounts of monomer in a solvent on the activation rate has been analyzed. A linear correlation of activation rate constants with previously determined equilibrium constants (KATRP) provides a Leffler–Hammond coefficient of 0.45. However, the activation rate constants do not correlate with dielectric constants and Dimroth’s and Reichardt’s ET(30) values. Appl...
121 citations
TL;DR: In this article, the same authors reported the kinetic data for the dehydrogenation of 2-butanol and hydrogen transfer from this alcohol to 3-pentanone over the same catalysts, showing that both reactions occur on the same sites and involve the same intermediate species.
118 citations
TL;DR: In this paper, the molecular weight-viscosity relationship for polystyrene is reviewed and it is recommended that the Staudinger relationship be discarded in favor of the conventional modification of it, [η] = KMa.
Abstract: The molecular weight-viscosity relationships for polystyrene are reviewed and it is recommended that the Staudinger relationship be discarded in favor of the conventional modification of it, [η] = KMa. An emulsion-prepared polystyrene was fractionated and the viscosities and osmotic molecular weight determined. The corresponding relationship between the viscosities in butanone and toluene is observed to follow the above equation. A table containing the molecular weight-viscosity relationships for polymers is appended.
112 citations
TL;DR: In this paper, the solubility of Vortioxetine hydrobromide (VORH) was determined by the gravimetric method at temperatures ranging from (283.15 to 318.15) K.
103 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 4 |
| 2024 | 5 |
| 2023 | 11 |
| 2022 | 19 |
| 2021 | 13 |
| 2020 | 13 |