(R)-1,3-Butanediol is a valuable chemical extensively used as a key intermediate for the synthesis of pharmaceuticals and several industrial compounds. Despite its high demand, the production has been restricted from multi-step chemical production, petrochemical substrate requirement and a non-e...

Pre-partum feeding of 1,3-butanediol to sows has been shown to improve the metabolic status and survival rate of neonatal pigs. To evaluate the efficacy of short-term, pre-partum feeding of 1,3-butanediol on pig and sow productivity on a large scale and low concentration was the focus of the res...

Vapor-phase dehydration of 1,4-butanediol and 3-buten-1-ol to produce 1,3-butadiene was investigated over rare earth oxides such as Lu2O3, Yb2O3, Tm2O3, Er2O3, and Sc1.0Yb1.0O3. In the dehydration of 3-buten-1-ol, heavy rare earth oxides such as Lu2O3, Yb2O3, and Er2O3 showed high catalytic perf...

The solubility curves for the (carbon dioxide + 1,3-butanediol diacrylate) and (carbon dioxide + 1,3-butanediol dimethacrylate) systems at various temperatures (313.2, 333.2, 353.2, 373.2 and 393.2) K as well as pressures up to 24.9 MPa were measured by static apparatus. The solubility of 1,3-bu...

ObjectivesIngested ketogenic agents offer the potential to enhance endurance performance via the provision of an alternative exogenous, metabolically efficient, glycogen-sparing fuel (i.e. ketone bodies). This study aimed to assess the impact of combined carbohydrate and 1,3-butanediol (CHO-BD) ...

Vapor-phase dehydration of 1,3-butanediol was performed over Yb2O3-ZrO2 catalysts in an ambient nitrogen atmosphere. Catalysts were prepared by a hydrothermal (HT) method as well as a coprecipitation method. The Yb2O3-ZrO2 sample prepared by HT was confirmed to be crystallites of oxygen-defected...

Small methyl ketones are known to have high octane numbers, impressive knock resistance, and show low emissions of soot, NOx, and unburnt hydrocarbons. However, previous studies have focused on the analysis of smaller ketones and 3-pentanone, while the asymmetric 2-pentanone (methyl propyl keton...

The reactivity of unsaturated alcohols with a C=C double bond in the β- and γ-positions to the hydroxyl group is not well established. The pyrolysis and oxidation of two such unsaturated alcohols have been studied, i.e. 3-methyl-2-butenol (prenol) and 3-methyl-3-butenol (isoprenol). Experiment...

Absolute rate coefficients for the gas-phase reactions of OH radical with 3-methylbutanal (k1), trans-2-methyl-2-butenal (k2), and 3-methyl-2-butenal (k3) have been obtained with the pulsed laser photolysis/laser-induced fluorescence technique. Gas-phase concentration of aldehydes was measured b...

The specific heat capacitycpof 2-methylpentane was measured with an accuracy of ±2 per cent with a high-pressure calorimeter. The results of these measurements are presented for the pressure range 0.1 MPa to 756 MPa at the temperature 299 K.

The effect of steam dilution on the formation of coke and minor products in 2-methylpenatne cracking on ultra stable HY at 673 K has been studied. The results show that steam dilution suppresses the formation of coke and minor aromatic products, but enhances the H/C atomic ratio of coke and the ...

Vibrational spectra have been obtained for 2-methylpentane and 3-methylpentane, and are interpreted with the aid of normal coordinate calculations. It is shown that 2-methylpentane exists in two molecular conformations and 3-methylpentane exists in four conformations. Transferred force constant ...

Bench-scale pilot plant study of AMP and 1,5-diamino-2-methylpentane (DA2MP) blend for CO2 capture from gas-fired power plant is investigated. The concentration of the amine blend is 2 kmol/m3 AMP-1.5 kmol/m3 DA2MP while that of single solvent MEA is 5 kmol/m3. Comparative analysis was based on ...

The vapor pressures of (1,3-pentanediamine + water), or (1,5-diamino-2-methylpentane + water) binary mixtures, and of pure 1,3-pentanediamine or 1,5-diamino-2-methylpentane components were measured by means of a static device at temperatures between (273 and 363) K. The data were correlated with...

Kinetic studies of 2-methylpentane skeletal transformations over Pt/Na-β zeolite have been carried out under steady state conditions. Negative reaction orders versus hydrogen, and positive reaction orders versus 2-methylpentane were obtained. In order to explain these kinetic data several mecha...

In this experimental investigation, the bubble points of three binary mixtures consisting of propylene oxide + ethyl benzene, propylene oxide + 2-methylpentane, and propylene oxide + 2-methyl-1-pentene were determined. The method of experimentation was the synthetic method in which phase change ...

This research is a bench-scale pilot plant investigation of novel amine solvent blend containing MDEA and 1,5-diamino-2-methylpentane (DA2MP) for CO2 capture from water-gas shift process plant (H2 production). The CO2 concentration used in this study (50 vol.% CO2 with N2 balance) is similar to ...

This research focuses on carbon dioxide absorption using aqueous solution of 1,5-diamino-2-methylpentane (DAMP) in an isothermal batch reactor. Equilibrium CO2 loading by the proposed aqueous solution is measured at the temperature range 30–50 °C, CO2 partial pressure range 5–150 kPa, and dif...

High-purity isohexane containing 88.12% 2-methylpentane, which has a higher polarity than industrial hexane, was selected to selectively fractionate mango kernel fat to produce 1,3-distearoyl-2-oleoyl-glycerol (SOS)-rich fat. The three-stage fractionation process was optimized by considering the...

Liquid-state IR and Raman spectra and solid-state IR spectra were obtained for 1-bromo-3-methylbutane and 1-bromo-4-methylpentane. The butane exists as a mixture of PC and PH conformers in the liquid and amorphous solid, but only the PH conformer is present in the crystalline solid. The pentane ...