Category: 111-87-5

Bebon, Rick published the artcileElectrostatic pair-interaction of nearby metal or metal-coated colloids at fluid interfaces, Application of n-Octanol, the main research area is electrostatic pair potential colloid.

In this paper, we theor. study the electrostatic interaction between a pair of identical colloids with constant surface potentials sitting in close vicinity next to each other at the fluid interface. By employing a simplified yet reasonable model system, the problem is solved within the framework of classical d. functional theory and linearized as well as nonlinear Poisson-Boltzmann (PB) theory. Apart from providing a sound theor. framework generally applicable to any such problem, our novel findings, all of which contradict common beliefs, include the following: first, quant. and qual. differences between the interactions obtained within the linear and the nonlinear PB theories; second, the importance of the electrostatic interaction between the omnipresent three-phase contact lines in interfacial systems; and, third, the occurrence of an attractive electrostatic interaction between a pair of identical metal colloids. The unusual attraction we report largely stems from an attractive line interaction, which although scales linearly with the size of the particle can compete with the surface interactions and can be strong enough to alter the nature of the total electrostatic interaction. Our results should find applications in metal or metal-coated particle-stabilized emulsions where densely packed particle arrays are not only frequently observed but also sometimes required. (c) 2020 American Institute of Physics.

Journal of Chemical Physics published new progress about Colloids. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sharapova, Angelica published the artcileSolubility and vapor pressure data of bioactive 6-(acetylamino)-N-(5-ethyl-1,3,4-thiadiazol-2-yl) hexanamide, Application of n-Octanol, the main research area is bioactive compound solubility elec conductivity.

This paper presents new exptl. data on some key physicochem. properties of original bioactive 6-(acetylamino)-N-(5-ethyl-1,3,4-thiadiazol-2-yl) hexanamide (AETH). Thermal anal. of the compound under study has been carried out using differential scanning calorimetry and thermogravimetric techniques. AETH solubility data in five pharmaceutically relevant solvents in the temperature range from 288.15 to 318.15 K have been obtained by the classic saturation shake-flask method. The bioactive compound has poor solubility in hexane and buffer solutions, while it is slightly soluble in selected alcs. The exptl. solubility results have been correlated by means of modified Apelblat and van’t Hoff equations. The selected thermodn. models produced acceptable results. The Hansen solubility parameters and their components for AETH and solvents have been evaluated by using the van Krevelen-Hoftyzer at. group contribution method. The ideal solubility and the solution activity coefficient at equilibrium in the selected solvents have been quantified based on exptl. values of melting enthalpy and temperature All the investigated solutions exhibit a pos. deviation from ideality with the maximal solubility in alcs. The equilibrium vapor pressure of the compound studied has been determined as a function of temperature in the range of 433.15-454.15 K by the transpiration method. The standard thermodn. parameters of AETH sublimation have been calculated

Journal of Chemical Thermodynamics published new progress about Crystals. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Perez, Hugo A. published the artcileEffect of cholesterol on the surface polarity and hydration of lipid interphases as measured by Laurdan fluorescence: New insights, Product Details of C8H18O, the main research area is cholesterol dipalmitoylphosphatidylcholine Laurdan fluorescence spectroscopy; Cholesterol; Laurdan fluorescence; Lipid membranes; Organic solvents.

Comparison of the behavior of Laurdan in gel and in the liquidcrystalline DPPC bilayers with that observedin chloroform and OctOH allow concluding that changes in the membrane lipid order cannot be ascribed to changes in viscosity of the local environment. Cholesterol acts as a spacer below the transition temperatureof DPPC, promoting a disorder state in the acyl chain region. No evidence of water entrance has been detected with Laurdan up to 30% Cholesterol in DPPC in this condition. In contrast, Chol displaces to longer values the wavelength of Laurdan in membranes in the liquidcrystallinestate. This decrease in polarity occurs above 5% Chol and is directly related to the water extrusion produced by Chol. This effect is similar to that occurring in liquid crystalline membranes subjected to hypertonic stress. The behavior is comparable to that of Laurdan in OctOH at different water ratios below 5% Chol/DPPC. At higher ratios, other changes are evident.

Colloids and Surfaces, B: Biointerfaces published new progress about Crystals. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Product Details of C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Doeller, Sonja C. published the artcileA case study on the influence of hydrophilicity on the signal enhancement by dynamic nuclear polarization, Product Details of C8H18O, the main research area is hydrophilicity dynamic nuclear polarization; DNP NMR; Dynamics; Low temperature NMR; Octanol; Solid state NMR; Surfactants.

In this work, the behavior of four different com. available polarizing agents is investigated employing the non-ionic model surfactant 1-octanol as analyte. A relative method for the comparison of the proportion of the direct and indirect polarization transfer pathways is established, allowing a direct comparison of the polarization efficacy for different radicals and different parts of the 1-octanol mol. despite differences in radical concentration or sample amount With this approach, it could be demonstrated that the hydrophilicity is a key factor in the way polarization is transferred from the polarizing agent to the analyte. These findings are confirmed by the determination of buildup times Tb, illustrating that the choice of polarizing agent plays an essential role in ensuring an optimal polarization transfer and therefore the maximum amount of enhancement possible for DNP enhanced NMR measurements.

Solid State Nuclear Magnetic Resonance published new progress about Dynamics. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Product Details of C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sasaki, Norihiko published the artcileControl over the Aspect Ratio of Supramolecular Nanosheets by Molecular Design, Computed Properties of 111-87-5, the main research area is nanosheet supramol structure self assembly; molecular design; nanostructures; porphyrins; self-assembly; supramolecular polymers.

Recent developments in kinetically controlled supramol. polymerization permit control of the size (i.e., length and area) of self-assembled nanostructures. However, control of mol. self-assembly at a level comparable with organic synthetic chem. and the achievement of structural complexity at a hierarchy larger than the mol. level remain challenging. This study focuses on controlling the aspect ratio of supramol. nanosheets. A systematic understanding of the relationship between the monomer structure and the self-assembly energy landscape has derived a new monomer capable of forming supramol. nanosheets. With this monomer in hand, the aspect ratio of a supramol. nanosheet is demonstrated that it can be controlled by modulating intermol. interactions in two dimensions.

Chemistry – A European Journal published new progress about Enthalpy. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Computed Properties of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Belhachemi, Boucif published the artcileDetermination and Correlation of Solubilities of Benzoic Acid, Salicylic Acid, Resorcinol and Hydroquinone in Water and in 1-Octanol at Temperatures from 297.25 K to 334.45 K, Quality Control of 111-87-5, the main research area is benzoic salicylic acid resorcinol hydroquinone octanol solubility.

The solubilities of benzoic acid, salicylic acid, resorcinol and hydroquinone in water and in 1-octanol were measured by the dynamic method which is also called the synthetic method from 297.25 K to 334.45 K. Using differential scanning calorimetry (DSC Q2000 and SDT Q600), the melting temperature and the enthalpy of fusion of these solutes were determined The obtained results show that the solubility of benzoic acid in water is greater than that of salicylic acid, but in the case of the two isomers of dihydroxybenzene, the solubility of resorcinol is approx. 100 times that of hydroquinone. In 1-octanol, the decreasing order of the solubility of these compounds is as follows: resorcinol > benzoic acid > salicylic acid > hydroquinone. The exptl. solubilities were correlated using two regression equations. The correlation coefficient is greater than 0.9937 for one of these two equations for the binary studied systems where the solvent is either water or 1-octanol. New exptl. data are provided for the solubility of resorcinol in water and salicylic acid, resorcinol, hydroquinone in 1-octanol.

International Journal of Thermophysics published new progress about Enthalpy. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Quality Control of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nour, Mohamed published the artcileImprovement of CI engine combustion and performance running on ternary blends of higher alcohol (Pentanol and Octanol)/hydrous ethanol/diesel, Safety of n-Octanol, the main research area is CI engine diesel fuel blend higher alc hydrous ethanol.

Pentanol and Octanol are strong candidates to improve the blending stability of hydrous ethanol and diesel. Most of the available studies are limited to the stability assessment and properties characterization without combustion evaluation. In this study, the impact of ternary blends of pentanol/hydrous ethanol/diesel (Pe10E10D80) and octanol/hydrous ethanol/diesel (Oc10E10D80) on CI engine combustion and performance are investigated. The fuel characteristics are measured, and a thermogravimetric anal. is performed. A set of experiments are performed on a CI engine at a wide range of operating conditions. The experiments report that the peak cylinder pressures for Pe10E10D80 and Oc10E10D80 are lower than that of D100. The rate of heat release (RoHR) at premixed combustion phase is diminished but enhanced for diffusion combustion zone. Ignition delay and combustion duration increased for ternary blends. The BSEC and bsfc for Oc10E10D80 is lower than D100, but both for Pe10E10D80 are higher than D100. The BTE of Oc10E10D80 is higher than D100, but Pe10E10D80 has lower BTE. The smoke, NOx, CO and CO2 emissions are reduced by 73%, 33%, 83%, and 56%, resp. Pentanol and octanol addition to hydrous ethanol/diesel blend achieves better blending stability with improved engine performance and reduced emissions.

Fuel published new progress about Biofuels. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Safety of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Raffius, Thomas published the artcileLaser spectroscopic investigation of diesel-like jet structure using C8 oxygenates as the fuel, Recommanded Product: n-Octanol, the main research area is carbon oxygenate fuel laser spectroscopic diesel jet structure.

Di-Bu ether (DNBE) and n-octanol have very low sooting tendencies in diesel-like combustion, as demonstrated in previous engine studies. This finding is not fully understood for pure DNBE, because it has a very high cetane rating (∼100). In order to investigate the underlying mechanisms, the structure of diesel-type jets is analyzed by a number of optical diagnostics, such as spontaneous Raman scattering (SRS), laser-induced fluorescence (LIF), OH* luminescence imaging, Mie scattering, and shadowgraphy. Pure DNBE and a tailor-made blend of 50% DNBE and 50% n-octanol as well as neat n-heptane are used as the fuel in sep. experiments The jets are probed in a simulated engine-like environment in a high-pressure combustion vessel. In particular, the inner flame structure is analyzed by SRS and LIF. This yields information on the local temperature and the concentrations of O2, CO, and polycyclic aromatic hydrocarbons (PAH). For the first time, O2 is quant. detected in the core of a diesel-like flame by resonance-enhanced SRS. Thereby, air entrainment into the inner flame core is assessed. Results show that air entrainment is particularly strong for pure DNBE, explaining its high soot oxidation rate and overall low sooting tendency. High entrainment is primarily attributed to the low heat-release rate of DNBE, which is likely an effect of its high ignitability. Thus, it can be concluded that the high cetane rating of pure DNBE does not only lead to relatively poor pre-combustion mixture preparation and consequently considerable soot formation but seemingly also to particularly strong soot oxidation Moreover, the jet structure turns out to be very similar for the DNBE/n-octanol blend and neat n-heptane, indicating that the net effect of volatility and fuel oxygenation is weak.

Fuel published new progress about Biofuels. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Recommanded Product: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhu, Yanli published the artcileHydrodeoxygenation of Octanoic Acid over Supported Ni and Mo Catalysts: Effect of Ni/Mo Ratio and Catalyst Recycling, Formula: C8H18O, the main research area is octanoic acid hydrodeoxygenation nickel molybdenum catalyst support recycling.

Hydrodeoxygenation of octanoic acid over supported NiMo bimetallic catalysts was investigated as a representative of carboxylic acid compounds in bio-oils. A series of MCM-41 supported Ni and Mo bimetal catalysts were prepared with the wetness impregnation method. The microstructural and physicochem. properties of the fresh and recovered bimetal catalysts were characterized by various methods such as X-ray diffraction (XRD), SEM (SEM) and XPS, etc.. The results show that the bulk NiO particles were well-uniformly dispersed on the surface of the bimetal catalyst, and Mo4+ was founded as the main valence of Mo inside solid. Under the optimal conditions, i. e. the reaction temperature of 270°C, reaction pressure of 3 MPa, and reaction time of 7 h, the 3Ni7Mo/MCM-41 sample exhibits selectivity to octane 72.6% with a high conversion of octanoic acid 96.1%. Only a slight decrease in catalytic activity was observed after reused for three times. Moreover, the recovered sample was easily regenerated only with simple calcination and deoxidization, but has the similar microstructure compared with the fresh one.

ChemistrySelect published new progress about Biofuels. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Han, Yinglei published the artcileTernary Phase Diagram of Water/Bio-Oil/Organic Solvent for Bio-Oil Fractionation, Synthetic Route of 111-87-5, the main research area is ternary phase diagram water biofuel organic solvent fractionation.

Separating bio-oil by fractionation with different chem. compositions is a critical step to refine these oils and obtain high-value products. Cold water precipitation of pyrolytic lignin from bio-oil is the most common approach used. However, the obtained aqueous phase from this method still contains phenols and is diluted and difficult to use. In this study, the use of liquid-liquid extraction with different solvents (1-butanol, Et acetate, 1-octanol, dichloromethane, toluene, and hexane) for the separation of targeted mols. (lignin oligomers, sugars, acetic acid) is explored. Ternary phase diagrams for the organic solvent/water/bio-oil are reported. The partition coefficient of compounds of interest (both light and heavy fractions) is reported for the liquid-liquid equilibrium zone. When using butanol as the solvent, the highest separation factor of total phenols over total sugars was observed Our results provide information to design L-L separation units with the capacity to selectively recover targeted mols. from pyrolysis oils.

Energy & Fuels published new progress about Biofuels. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Synthetic Route of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts