Category: 111-87-5

Uslu, Hasan published the artcileExtraction of Propionic Acid from Aqueous Solutions Using Tri-n-octylphosphine Oxide and Dioctylamine in Different Solvents, Recommanded Product: n-Octanol, the main research area is propionic acid extraction TOPO dioctylamine mixture solvent.

This work examines the reactive extraction of propionic acid, a promising liquid-liquid extraction technique, using tri-n-octylphosphine oxide (TOPO) or dioctylamine (DOA) diluted with eight different solvents (n-octane, Me iso-Bu ketone (MIBK), 1-octanol, Et Me ketone, diisobutyl ketone, n-decane, di-Et sabecate, 1-decanol) at 298.15 K to determine the most efficient mixture for the extraction processes. A phosphorous-based extractant, TOPO, has been chosen for the extraction tests since it has low water solvency and is more ecol. agreeable than the amine-type extractants. Among the other amine extractants reported in reactive extraction studies, there is no study on propionic acid extraction using DOA in the literature. Phys. extraction experiments with pure solvents were also performed to analyze the effect of TOPO and DOA on the extraction process. Distribution coefficients, loading factors, and extraction yields of the processes were determined for the explanation of the results. It was concluded that the addition of TOPO or DOA to the organic phase significantly improves the extraction of propionic acid from its aqueous media. The extraction of propionic acid, using the binary solutions of TOPO/diluent or DOA/diluent, improves with an increase in the initial TOPO or DOA concentration The highest extraction yield, E% = 98.01, was achieved with the DOA + Me iso-Bu ketone (MIBK) extractant system (1.652 mol kg-1), with a distribution coefficient of KD= 49.352; thus, the use of the DOA/methyl iso-Bu ketone system in the organic phase is suggested for the propionic acid extraction methods.

Journal of Chemical & Engineering Data published new progress about Extraction. 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

Kloetzer, Lenuta published the artcileSeparation of fumaric acid by amine extraction without and with 1-octanol as phase modifier, Formula: C8H18O, the main research area is fumaric acid reactive extraction Amberlite LA2 amine octanol modifier.

The aim of the current experiments was to study the reactive extraction of fumaric acid using Amberlite LA-2 and to comparatively analyze the influences of the process parameters (pH-value of aqueous phase, extractant concentration, and organic phase polarity) on the separation performances for the extraction systems with and without 1-octanol. Also, original equations describing the influence of extractant concentration on distribution coefficient were proposed. The results indicated that the mechanism of the interfacial reaction between acid FA(COOH)2 and extractant (Q) is controlled by the organic phase polarity and the pH-value of aqueous phase plays an important role on extraction efficiency. Thus, the structure of the extracted complexes, in the absence of 1-octanol, are FA(COOH)2Q2 for n-heptane and FA(COOH)2Q for dichloromethane. The addition of 1-octanol modified only the structure of complexes extracted in n-heptane to FA(COOH)2Q. The pos. effect of 1-octanol on extraction efficiency was quantified by means of the amplification factor, its maximum values being 2.8 for dichloromethane, and 2.48 for n-heptane. The extraction mechanism influences also the value of the extraction constant, the highest value, KE = 1.31 ·103 (L2·mol-2), was obtained for lower polarity of the organic phase, namely n-heptane.

Separation and Purification Technology published new progress about Extraction. 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

Li, Qianqian published the artcileExperimental and kinetic modeling study of laminar flame characteristics of higher mixed alcohols, Recommanded Product: n-Octanol, the main research area is higher mixed alc laminar flame kinetic model.

Mixturesof alcs.combining strengths of lower and higher alcs.show promising alternative properties as engine fuel. To aid the extensive application of the mixed alcs., detailed combustion investigation is necessary. In this study, laminar flame speeds and Markstein lengths were measured for simplified higher mixed alcs.(blends of methanol and n-hexanol/n-heptanol/n-octanol) with spherically propagating flame at 0.1 MPa, elevated temperatureof 433 K, and different mixing ratios. A comprehensive model was developed to describe the high temperaturechem.of the mixed alcs. The accuracy of the model was validated with present data. Results reveal that the three higher alcs.exhibited close laminar flame speeds and Markstein lengths resulting from their similar thermal, diffusion, and chem.kinetic properties. With the increasing mixing ratio of the higher alcs., the laminar flame speed decreased, especiallyfor the rich mixtures The maximum laminar flame speed slightly shifted to the lean side. The Markstein length increased at extremely lean mixturesand decreased at extremely rich mixtures, with the intersection occurring at the equivalence ratio between 1.2 and 1.3. The laminar flame speed variation of the mixed alcs.was dominated by chem. kinetics. Reaction pathway analyses indicated that the cracking process of each component in the mixed alcs.remains as that in the pure alcs. Such result demonstrated the chem.kinetic effect resulting from changes in fuel components.

Fuel Processing Technology published new progress about Combustion. 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

Ruiz-Rodriguez, Irene published the artcileExperimental study of the effect of C8 oxygenates on sooting processes in high pressure spray flames, HPLC of Formula: 111-87-5, the main research area is oxygenate sooting spray flame combustion thermo phys chem property.

Oxygenated compounds have the ability to reduce soot emissions and to improve the combustion efficiency in engines. Most studies have focused on the soot reduction potential of shorter carbon chain oxygenates, while longer carbon chain oxygenates are still relatively unexplored. In this work, the soot reduction potential of long carbon chain oxygenates having similar thermo-phys. and chem. properties to those of diesel have been studied, viz., 2-octanone (ketone), 1-octanol (alc.), hexyl acetate (ester) and octanal (aldehyde). These oxygenates were injected at high pressure into a constant volume chamber maintained at high ambient temperature conditions, and their spray flames were investigated using a high-speed, two-color pyrometry system. It was found that for the same injected fuel mass, the oxygenates reduced the overall soot when compared to diesel. Small differences in sooting tendencies were observed between different oxygenated moieties but these were smaller than those relative to diesel. The absence of aromatic groups and the presence of oxygen directly bonded to carbon atoms seemed to have a larger effect on soot reduction than the oxygenated functional group. The oxygenates altered the local oxygen equivalence ratio in the spray, influencing the soot formation and its distribution in the flame. Under the high pressure conditions studied, the average sooting tendency of the long carbon-chain oxygenates studied increased in the order of: ester< aldehyde �alc.HPLC of Formula: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Jinglan published the artcileEffect of diesel blended with di-n-butyl ether/1-octanol on combustion and emission in a heavy-duty diesel engine, Safety of n-Octanol, the main research area is butyl ether octanol diesel engine blend combustion emission; Butyl ether; Combustion; Diesel engine; Emission; Octanol.

Two kinds of C8 isomers, di-Bu ether (DNBE) and 1-octanol, as potential oxygen-containing alternative fuels, show important value in the trade-off between efficiency and emission. In the present work, the effects of DNBE/1-octanol with different proportions (0, 10%, and 20%) blended into diesel on the combustion characteristics, fuel economy, and emission characteristics in a six-cylinder heavy-duty diesel engine were studied at low, medium, and high loads. 1-Octanol with a 20% blending ratio showed different combustion characteristics in the cylinder compared with the other fuels. The economic anal. showed that the brake specific fuel consumption of DNBE-diesel blend fuels was higher than that of 1-octanol-diesel blend fuels, while brake thermal efficiency was the opposite tendency. The emissions of nitrogen oxides (NOx), hydrocarbons (HC), and carbon monoxide (CO) were affected by the types of blend fuels, blending ratios, and loads. In comparison with 1-octanol-diesel blend fuels, the addition of DNBE in diesel promoted the emission of nitrogen oxides, but inhibited the emissions of soot, HC, and CO. DNBE- and 1-octanol-diesel blend fuels increased the weighted brake specific fuel consumption but decreased the weighted brake thermal efficiency compared with diesel in the World Harmonized Stationary Cycle test cycle of Euro VI regulation. The weighted NOx, HC, soot, and CO emissions of blend fuels depended on the types of blend fuels and blend ratios. The weighted NOx, HC, and soot emissions were reduced by blending 1-octanol into diesel, while the weighted CO emission was increased. The weighted CO and soot emissions of diesel blended with DNBE were reduced than that of diesel.

Environmental Pollution (Oxford, United Kingdom) published new progress about Combustion. 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

Roncal, Tomas published the artcilePurification and concentration of formic acid from formic acid/gluconic acid mixtures by two successive steps of nanofiltration and reactive liquid-liquid extraction, COA of Formula: C8H18O, the main research area is purification concentration formic gluconic acid mixture nanofiltration reactive extraction.

A downstream process for the purification and concentration of formic acid (FA) from FA/gluconic acid (GA) mixtures, obtainable by a coupled biocatalytic reaction of CO2 reduction and glucose oxidation, has been developed. The process involved two technologies: (i) a first nanofiltration (NF) step to sep. FA and GA, and (ii) a second reactive liquid-liquid extraction (RLLE) step to concentrate FA. The NF process, using a Synder NFX membrane, consisted of three NF steps separated into two divergent lines, named permeate and retentate pathways. The first NF was common for both pathways, resulting in a permeate strongly enriched in FA and depleted in GA, and a retentate with opposite characteristics. In the permeate pathway, this first permeate was subjected to a second NF to obtain a 99.6% pure FA permeate. In the retentate pathway, an addnl. NF step on the first retentate resulted in a concentrated 99.4% pure GA retentate. The final diluted FA permeate was concentrated by RLLE using tri-N-octylamine as extractant in n-octanol, and a final back-extraction with NaOH. The optimized RLLE process involved a 100-fold volume decrease and resulted in a final FA solution (as sodium formate) of 174.5 g/L, 78 times more concentrated than the feed.

Separation and Purification Technology published new progress about Extraction. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, COA of Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Xiang, Xiao-le published the artcileNon-destructive characterization of egg odor and fertilization status by SPME/GC-MS coupled with electronic nose, Synthetic Route of 111-87-5, the main research area is egg odor fertilization volatile organic compound SPME electronic nose; SPME/GC-MS; electronic nose; fertile eggs; fertilized eggs; infertile eggs; odor; unfertilized eggs.

BACKGROUND : Early and non-destructive identification of fertile (F) eggs is a difficult task in the process of breeding laying hens. The odors emitted from unfertilized (UF), infertile (IF), and fertile (F) eggs were characterized by solid-phase microextraction / gas chromatograph-mass spectrometry (SPME/GC-MS) and electronic nose (E-nose) to determine their differences by principal component, partial least squares, and canonical discriminant analyses. RESULTS : A total of 14 volatiles were identified in unhatched shell white Leghorn eggs, such as nonanal, decanal, 6-methyl-5-hepten-2-one, and 6,10-dimethyl-5,9-undecadien-2-one. Cedrene and decanal contributed greatly to the classification of UF and fertilized (Fd)/IF eggs; cedrene, decanal, 1-octanol and hexanal contributed greatly to the distinction between UF and IF eggs; heptanal might be the potential marker to determine F/IF eggs. P40/1, P10/2, P10/1, TA/2, T40/2 and T30/1, P30/1, P40/2, PA/2, T40/2 mostly contributed to the distinction between UF and Fd eggs and between F and IF eggs, resp. Canonical discriminant anal. presented superior differentiating efficiency for almost all groups, and the odor differences between UF and Fd eggs were significantly larger than the differences between F and IF eggs. CONCLUSION : Solid-phase microextraction / gas chromatograph-mass spectrometer combined with E-nose may have the potential to non-destructively distinguish UF, F, and IF eggs, which will provide a new perspective to understand the differences among them. © 2018 Society of Chem. Industry.

Journal of the Science of Food and Agriculture published new progress about Biomarkers. 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

Schoettl, Sebastian published the artcileCombined molecular dynamics (MD) and small angle scattering (SAS) analysis of organization on a nanometer-scale in ternary solvent solutions containing a hydrotrope, COA of Formula: C8H18O, the main research area is mol dynamics small angle scattering nanometer scale hydrotrope; Detergentless microemulsion; Molecular dynamics; Pre-Ouzo; Small angle scattering; Surfactant-free microemulsion; Ternary mixtures; Ultraflexible microemulsion.

Mixtures of three solvents, with two immiscible liquids and a third one miscible to both – the solvotrope, may exhibit structuration. We explore the phase diagram of n-octanol/ethanol/water, where ethanol is the hydrotrope, varying composition from the water-rich side to the n-octanol-rich side at constant ethanol fraction. We resolve nanometer-sized structures exptl. by mean of four contrasts: three from Small Angle Neutron Scattering (SANS) and one from Small Angle X-ray Scattering (SAXS). On the water-rich side, we confirm the existence of droplets associated to a critical point stabilized by an excess adsorption of the hydrotrope: the ultra-flexible microemulsion (UFME) domain. The n-octanol-rich side is better described as a dynamic random network of chain-like associations of hydroxy groups. The continuous evolution from oil clusters to a dynamic network of hydroxy groups is demonstrated by the features of scattering patterns, successfully compared for all contrasts to Mol. Dynamics (MD) simulations, allowing to illustrate with snapshots the structuration of solvents. The free energy of transfer of the hydrotrope obtained from MD is low (âˆ? kBT/mol.). This study suggests that Ouzo spontaneous emulsions may be in dynamic equilibrium with a pre-Ouzo, similarly to nanoemulsions kinetically stabilized by the co-existence of a microemulsion.

Journal of Colloid and Interface Science published new progress about Aggregates. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, COA of Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Das, Kalicharan published the artcilePhosphine-Free Well-Defined Mn(I) Complex-Catalyzed Synthesis of Amine, Imine, and 2,3-Dihydro-1H-perimidine via Hydrogen Autotransfer or Acceptorless Dehydrogenative Coupling of Amine and Alcohol, SDS of cas: 111-87-5, the main research area is manganese catalyzed dehydrogenative coupling aryl amine benzyl alc; crystal structure thioalkylaminopyridyl manganese cation complex; mol structure thioalkylaminopyridyl manganese cation complex; perimidine benzo preparation; stilbene amino preparation; resveratrol derivative preparation.

The application of nontoxic, earth-abundant transition metals in place of costly noble metals is a paramount goal in catalysis and is especially interesting if the air- and moisture-stable ligand scaffold was used. Herein, the authors report the synthesis of amines/imines directly from alc. and amines via H autotransfer or acceptorless dehydrogenation catalyzed by well-defined phosphine-free Mn complexes. Both imines and amines can be obtained from the same set of alcs. and amines using the same catalyst, only by tuning the reaction conditions. The amount and nature of the base are a highly important aspect for the observed selectivity. Both the primary and secondary amines were employed as substrates for the N-alkylation reaction. As a highlight, the authors showed the chemoselective synthesis of resveratrol derivatives Also, the Mn-catalyzed dehydrogenative synthesis of structurally important 2,3-dihydro-1H-perimidines also was demonstrated. D. functional theory calculations were also carried out to model the reaction path and to calculate the reaction profile.

Organometallics published new progress about Alkylation. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, SDS of cas: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Pandey, Bedraj published the artcileSelective Ketone Formations via Cobalt-Catalyzed β-Alkylation of Secondary Alcohols with Primary Alcohols, Product Details of C8H18O, the main research area is ketone preparation cobalt catalyst beta alkylation secondary primary alc.

A homogeneous cobalt-catalyzed β-alkylation of secondary alcs. with primary alcs. to selectively synthesize ketones via acceptorless dehydrogenative coupling is reported for the first time. Notably, this transformation is environmentally benign and atom economical with water and hydrogen gas as the only byproducts.

Organic Letters published new progress about Alkylation. 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