Acetone 2-propanol

FIGURE 3 2 Solvent extraction efficiencies (EF) as functions of dielectric constants (D), solubility parameters (6), and polarity parameters (P and E -). Solvents studied silicon tetrachloride, carbon disulfide, n pentane. Freon 113, cyclopentane, n-hexane, carbon tetradiloride, diethylether, cyclohexane, isooctane, benzene (reference, EF 100), toluene, trichloroethylene, diethylamine, chloroform, triethylamine, methylene, chloride, tetra-hydrofuran, l,4 dioxane, pyridine, 2 propanol, acetone, ethanol, methanol, dimethyl sulfoxide, and water. Reprinted with permission from Grosjean. ... 

Fig. 19. ATR signals as a function of time for 2-propanol oxidation at 298 K catalyzed by 5% Pd/ TiO2 immobilized on a ZnSe IRE. At time t = 20 s, the solvent flow was switched from hydrogen-saturated 2-propanol to oxygen-saturated 2-propanol. At t = 120 s, the flow was switched again to hydrogen-saturated 2-propanol. Signals associated with the oxidation product of 2-propanol, acetone, and water are shown. The signal at 1820 cm is associated with changes occurring on the metal catalyst (see text for details) (49. ...

TLC Dilute with ethanol Silica 2-Propanol-acetone-chloroform-ammonium hydroxide (9 2 2 4) 254 nm... 

In the absence of Pd2+ but in the presence of steam, Mochida el al. (49, 50) showed that propylene could be oxidized over Cu2 +Y to yield a mixture of products such as 2-propanol, acetone, and acrolein. 

These media are essentially an extension of dilute solutions whereby the solute now comprises a significant fraction of the total volume. Nevertheless, the principle remains the same, namely to generate the required radicals. For example, one-electron reduction of the fullerene Cg4 has been effected in nitrogen-saturated toluene/2-propanol/acetone (8 1 1) [42]. Here the solvent primary radicals are converted to (CH3)2 C0H by reduction of acetone and oxidation of 2-propanol. 

The butanols and their methyl and ethyl ethers have several advantages as oxygenates over methanol and ethanol in gasoline blends. Their energy contents are closer to those of gasoline the compatibility and miscibility problems with petroleum fuels are nil excessive vapor pressure and volatility problems do not occur and they are water tolerant and can be transported in gasoline blends by pipeline without danger of phase separation due to moisture absorption. Fermentation processes (Weizmann process) have been developed for simultaneous production of 1-butanol, 2-propanol, acetone, and ethanol from... 

Quinary Mixed Solvent. The solubilities of naphthalene and anthracene in quinary mixed solvents (water/methanol/ ethanol/2-propanol/acetone) were predicted using Equation 23. The molar volume of an ideal quinary mixed solvent was calculated as... 

The photocatalytic reduction of CO2 on the bare CdS particles suspended in acetonitrile in the presence of 2-propanol resulted in the formation of formate and carbon monoxide as the reduction products with a simultaneous production of H2 (Figure 1). As an oxidation product of 2-propanol, acetone was produced, and no other oxidation products were obtained. As shown in... 

Incinerator exhaust gases do, however, contain a variety of pollutants -not only dioxin derivatives but also other compounds such as odours, volatile organic compounds (VOCs) and the reaction intermediates of dioxins [516], VOCs are a major contributor to air pollution because of their toxic and malodorous nature and their contribution to ozone and smog formation [131], They are emitted from a wide range of industrial processes and transportation activities [131,162,519-521], Some representative VOCs are methanol, ethanol, 2-propanol, acetone and toluene. 

Desorption was monitored with mass spectroscopy. The cracking patterns of 2-propanol, acetone, and propene were individually determined ( ). For quantitative analysis, masses 45, 45, 41, 18, and 2 were used for 2-propanol, acetone, propene, water, and hydrogen, respectively, after correction for cracking in a similar procedure as described (52 ) The mass spectrometer sensitivities were determined to be 5.26, 7 88, 5.07, 4 74, and 5.20 amp/torr, and the pumping speeds were 9.5, 15.1, 51.0, 1.7, 56.9 L sec"", respectively for the five species. These two latter quantities were used to convert the mass spectrometer readings into molecular fluxes. 

Figure 13.1 Alcohol dehydrogenase (ADH) cofactor recycling with 2-propanol/acetone.

Dimethoxycarbonyl-l,3-diphenyl-4-methyl-lH-indazol4< q Eine Losung von 3,16 g (10 mmol) 1,3-Diphe-nyl-4,6,6-trimethyl-1.6-dihydro- und 1,92 g (15 mmol) Butindisaure-dimethylester in 100 mltrockenem DMF wird 12 h unter Riickflufi erhitzt. Das Losungsmittel wird i. Vak. bei 20 entfernt und der dunkelbraune olige Riickstand aus 2-Propanol/Aceton (10 1) umkristallisiert Ausbeute 3,28 g (82%) Schmp. 180-182J. 

The reactions are of either liquid-gas (wet) or solid-gas (dry) type. Dry processes show high reaction rates enabling compactness, but a poor heat and mass transfer behavior compared with wet processes [19]. The examples of the 2-propanol - acetone system [44, 56], the cyclohexane-benzene system [31], the hydride system [30], and the sponge iron system [54] are given in more detail in appendix C. 

The 2-propanol / acetone / hydrogen chemical heat pump is operated in three steps ... 

Accordingly, a concept was developed, that involves one of the organic compounds, e.g., toluene as a fullerene-dissolving medium (12,13). The systematic fullerene reduction was then obtained via addition of adequate co-solvents, namely, acetone and 2-propanol. Acetone was chosen as an efficient electron scavenger to hinder a reaction between solvated electrons and toluene. Followed by a fast protonation a radical species with a reducing character is formed. In addition, the (CH3)2 COH species is identical with the main product of the radiolysis of the second co-solvent, 2-propanol. 

Similar observations were made in radiolytic experiments with N2O or N2-saturated 2-propanol solutions of [60]fullerene, despite the poor fullerene solubility. Radiolysis of N2O / 2-propanol solutions leads also to a single reactive species, namely, (CH3)2 C0H and the fullerene reduction proceeds similar to the one outlined in the toluene/2-propanol/acetone solvent mixture (13). In N2-saturated 2-propanol solutions the solvated electron (e soi), existing beside the (CH3)2 COH radical, reduces the [60]fullerene with a rate constant of 1.0 x 10 ° M s ... 

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