Category: 111-11-5

Chi, Xuelu published the artcileDistinction of volatile flavor profiles in various skim milk products via HS-SPME-GC-MS and E-nose, Safety of Methyl octanoate, the main research area is skim milk product volatile flavor profile HSSPMEGCMS E nose.

Volatile flavor profile of skim milk relates to product quality and consumer liking. The volatile compositions of different skim milk products are challenging to discriminate due to subtle constituents and inconspicuous peculiarities. This study develops a correlative anal. protocol for the characterization and differentiation of volatile flavor components in various skim milk products via headspace solid-phase micro-extraction gas chromatog.-mass spectrometry (HS-SPME-GC-MS) and electronic nose (E-nose) with multivariate statistical anal. Sixty-three volatile flavor components were identified in six skim milk products, which were paired into pasteurized skim milk, ultra-high-temperature skim milk, and modified skim milk, resp. Distinguishable variation trends were observed upon the aroma response values of skim milk samples through the solid-state E-nose sensors. The results of principal component anal., cluster heatmap anal. and Venn diagram anal. showed that significant distinctions in varying degrees among the six skim milk products could be presented in both volatile flavor composition and aroma release distribution. The correlative anal. by partial least squares regression indicated an adequate combination of HS-SPME-GC-MS and E-nose for the differentiation and classification of volatile flavor profiles in skim milk products. These findings provide an insightful perspective for the efficient flavor evaluation of fluid skim milk.

European Food Research and Technology published new progress about Dairy products. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Safety of Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zaki, Ayman H. published the artcileSodium titanate nanotubes for efficient transesterification of oils into biodiesel, Product Details of C9H18O2, the main research area is sodium titanate nanotube oil biodiesel transesterification; Cooked oil; FAME; Heterogeneous catalyst; Kinetics; Mechanism; Modeling.

In this work, sodium titanate nanotubes were prepared by a hydrothermal method for 23 h at 160°C and characterized by high-resolution transmission electron microscopy (HRTEM), field emission SEM (FESEM), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) methods, and Fourier transform IR (FT-IR) spectroscopy. The obtained nanotubes were used as catalysts in the transesterification of pure and cooked oils under different exptl. conditions (molar ratio, temperature, catalyst weight, and time). The catalyst showed high efficiency depending on the chosen conditions. The biodiesel yield was found to be 95.9% at 80°C for 2 h. The catalyst also showed high activity for cooked oil conversion, with yields of 96.0, 96.0, and 93.58% for the first, second, and third uses of oil, resp. The methanol was recycled and used in another transesterification experiment, and the biodiesel yield reached 91%. D. functional theory, Monte Carlo simulation, and mol. dynamics simulation were employed to clearly understand the transesterification mechanism. The transesterification reaction is represented by a pseudo-first-order kinetics model. [Figure not available: see fulltext.].

Environmental Science and Pollution Research published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Product Details of C9H18O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bian, Yuhang published the artcileBiodiesel Production Over Esterification Catalyzed by a Novel Poly(Acidic Ionic Liquid)s, Application In Synthesis of 111-11-5, the main research area is biodiesel esterification catalyzed polyacidic ionic liquid.

High biodiesel yield was obtained by using poly (acidic ionic liquid)s. The ionic liquid monomer was synthesized through quaternary ammonization on the N,N-Dimethyl-3-aminophenol with 1,3-propanesultone and p-Hydroxybenzenesulfonic acid. The IL monomer and formaldehyde was used to synthesize the poly(acidic ionic liquid)s. Several physicochem. techniques were used in the characterization of this poly(acidic ionic liquid)s. The esterification of oleic acid and methanol was used to investigate the catalytic activity of the synthesized catalyst. In order to obtain the maximum yield, four parameters (reaction time, amount of methanol, temperature and catalyst amount) were considered. In the optimum condition (5 wt% catalyst amount, 9:1 methanol/oleic acid ratio at 80°C for 1.5 h), the ester yield was up to 93.3%. After four cycles of use, the catalytic activity of FCPIL did not exhibit significant decline.

Catalysis Letters published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application In Synthesis of 111-11-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Soudagar, Manzoore Elahi M. published the artcileEffect of Sr@ZnO nanoparticles and Ricinus communis biodiesel-diesel fuel blends on modified CRDI diesel engine characteristics, Application In Synthesis of 111-11-5, the main research area is strontium zinc oxide nanoparticle Ricinus communis CRDI diesel engine.

The current study aims to evaluate the performance and emission characteristics of a modified common rail direct injection (CRDI) diesel engine fueled by Ricinus communis biodiesel (RCME20), diesel (80%), and their blends with strontium-zinc oxide (Sr@ZnO) nanoparticle additives. The Sr@ZnO nanoparticles were synthesized using aqueous precipitation of zinc acetate dehydrate and strontium nitrate. Several characterization tests were performed to study the morphol. and content of synthesized Sr@ZnO nanoparticles. The Sr@ZnO nanoparticles were steadily blended with RCME20-diesel fuel blend in mass fractions of 30, 60 and 90 ppm using a magnetic stirrer and ultrasonication process. For a long term stability of nanoparticles, Cetyl trimethylammonium bromide (CTAB) surfactant was added. The physicochem. properties of the fuel blends were measured using ASTM standards The CRDI engine was operated at two compression ratios 17.5 and 19.5, 1000 bar injection pressure, 23.5°BTDC injection timing and constant speed. For enhanced swirl and turbulence, and improved spray quality lateral swirl combustion chamber and 6-hole fuel injector were used. The compression ratio of 19.5 and 60 ppm of Sr@ZnO nano-additives showed overall enhancement in engine characteristics compared to RCME20 fuel. The engine characteristics such as BTE, HRR and cylinder pressure increased by 20.83%, 24.35% and 9.55%, and BSFC, ID, CD, smoke, CO, HC and CO2 reduced by 20.07%, 20.64%, 14.5%, 27.90%, 47.63%, 26.81%, and 34.9%, while slight increase in NOx for all nanofuel blends was observed

Energy (Oxford, United Kingdom) published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application In Synthesis of 111-11-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Xiaoyuan published the artcileHigh-Temperature Pyrolysis and Combustion of C5-C19 Fatty Acid Methyl Esters (FAMEs): A Lumped Kinetic Modeling Study, COA of Formula: C9H18O2, the main research area is pyrolysis combustion fatty acid methyl ester lumped kinetic model.

In the effort to mitigate the depletion of fossil fuels and climate change, biodiesels are considered to be one of the most suitable substitutes for petro-diesel in compression ignition engine applications. As a follow up to prior modeling studies for gasoline and jet surrogate fuel components (Zhang, X.; Mani Sarathy, S. Fuel, 2021, 286, 119361), this work proposes a lumped kinetic model for both saturated and unsaturated C5-C19 fatty acid Me esters (FAMEs) based on the same methodol. The present lumped model includes 52 FAME fuel components, covering a wide range of biodiesel surrogate fuel components, as well as components typically found in biodiesels. This methodol. decouples the combustion of FAME fuels into two stages: the pyrolysis of fuel mols. and the oxidation of pyrolysis intermediates. Lumped reaction steps are used to describe the (oxidative) pyrolysis of each fuel mol., while a detailed model (Aramcomech 2.0) is adopted as the base mechanism to describe the subsequent conversion of these key intermediates. Rate rules adopted for all the FAME fuels are consistent. The present lumped model is validated against exptl. data from 20 pure FAMEs and six diesel/biodiesel surrogates, including around 130 sets of validation data. In general, the present lumped model satisfactorily captures most of these validation targets. This lumped model performs comparably with the detailed models developed in the literature under combustion conditions. Combined with the lumped model for 50 hydrocarbon fuels developed in previous work by this group, the lumped kinetic model for FAME fuels developed here can be used to predict the pyrolysis and combustion chem. of diesel/biodiesel surrogates in CFD simulations after necessary model reduction for the base model. Also, the stoichiometric parameters of the lumped reactions for various pure FAMEs can be used as the database for data science study in FGMech development for real biodiesels.

Energy & Fuels published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, COA of Formula: C9H18O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Fazal, M. A. published the artcileBiodiesel degradation mechanism upon exposure of metal surfaces: A study on biodiesel sustainability, Application of Methyl octanoate, the main research area is copper biodiesel sustainability degradation.

The increased demand and price of petroleum diesel along with its limited reservation and emitted harmful substances have made the world confronted. Biodiesel as an alternative to petroleum diesel offers immediate potential to meet these concerns. It provides several tech. benefits over diesel such as reduced emission, high flash point, and improved cetane number However, the oxidative nature of biodiesel is found to be one of the major problems which limits its com. usage and sustainability. Mol. reactions in biodiesel and their susceptibility to oxidation are important to understand but only limited information is available in this regard. The present study aims to investigate the biodiesel mol. changes upon exposure of metal surface. The tests were conducted by immersing copper coupons in palm biodiesel at ambient temperature (25-27°C) for various immersion time, viz., 200 h, 600 h, 1200 h, 2880 h. D., total acid number and composition of biodiesel before and after immersion tests were determined by d. meter, TAN analyzer and gas chromatog. mass spectroscopy anal. Date obtained from different tests are analyzed and compared to explore the possible degradation mechanism of biodiesel mols. Results show that the key components of biodiesel include Me stearate (9.94%), palmitate (38.64%), oleate (34.29%) and linoleate (6.92%). Upon exposure of copper for 2880 h, the concentrations of these mols. are changed to 10.14%, 33.78%, 31.34% and 1.09% resp. Such changes in composition cause alteration in fuel properties and thus, hinders its sustainability. The possible reaction mechanisms have been discussed in detail with the help of obtained data and relevant literatures.

Fuel published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sui, Meng published the artcileStudy on the mechanism of auto-oxidation of Jatropha biodiesel and the oxidative cleavage of C-C bond, Category: esters-buliding-blocks, the main research area is biodiesel methyl linoleate hexanal oxidation Jatropha.

Jatropha biodiesel was obtained according to the continuous preparation process which included vapor esterification – transesterification – methanol steam distillation Accelerated oxidation of small Jatropha biodiesel was obtained by the Rancimat method. GC-MS and liquid phase micro-extraction were used to study and analyze the components in the oxidation process of Jatropha curcas biodiesel. The electronic effects of the related reactants and products were calculated by d. functional theory, followed by the deduction of the related chem. reaction paths. Exptl. investigation shows that Me linoleate is the main factor affecting the oxidation stability of the Jatropha biodiesel. The main volatile products at the initial stages of the oxidation of Me linoleate are hexanal, Me octanoate, styrene, and 2-heptenal. The cis/trans-3-octyl-oxiranyl octanoic acid Me ester (18.03% yield) is produced by the reaction of peroxy acid and Me oleate during the oxidation of Me oleate. The hydrogen extraction reaction is difficult to occur, and the oxidation reaction energy barrier is relatively high due to the relatively large bond energy of the C-H bond in the Me stearate mol. In this manuscript, the auto-oxidation mechanism of the biodiesel fatty acid Me esters at the initial stage of oxidation, the path of oxidative cleavage of the C-C bond of Jatropha biodiesel and the formation process of ethylene oxide structure are obtained through DFT calculation and anal. of the oxidation products.

Fuel published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ramalingam, Selvakumar published the artcileInfluence of Moringa oleifera biodiesel-diesel-hexanol and biodiesel-diesel-ethanol blends on compression ignition engine performance, combustion and emission characteristics, Name: Methyl octanoate, the main research area is Moringa biodiesel hexanol ethanol blend ignition engine performance.

In the current work, the influences of Moringa oleifera biodiesel-diesel-hexanol and Moringa oleifera biodiesel-diesel-ethanol blends on compression ignition engine characteristics were exptl. investigated. Experiments were conducted on a diesel engine at 0%, 25%, 50%, 75% and 100% load conditions run at a constant speed of 1500 rpm. The results revealed that B90-D5-H5 acquired the lowest BSFC and maximum BTE of 0.375 kg kW-1 h-1 and 28.8%, resp., and B100 had the highest BSFC of 0.425 kg kW-1 h-1. B90-D5-H5 had the highest cylinder peak pressure of 74 bar at 4°CA aTDC. The maximum heat release rate (HRR) and longer ignition delay (ID) period of 44 J per °CA and 14.4°CA, resp., were attained in the B90-D5-H5 blend. At 100% load condition, the lowest amount of carbon monoxide (CO) of 0.32% volume was acquired in the B80-D5-E15 blend. The maximum nitric oxide (NO) emission of 1090 ppm was also acquired in the B80-D5-E15 blend. B100 had the lowest NO of 846 ppm; B80-D5-E15 had the lowest unburned hydrocarbon (UBHC) emission of 34 ppm at 100% load and the lowest smoke opacity of 34%. Biodiesel-diesel-alc. blends improve engine performance and decrease emissions compared to the conventional diesel. The utilization of biodiesel-diesel-alc. blends reduces the consumption of diesel. Hence, ethanol and hexanol are recommended as potential alternative additives in biodiesel-diesel blends to improve engine performance and reduce emissions.

RSC Advances published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Name: Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

da Silva, Juliana Quierati published the artcileLight biodiesel from macaub́a and palm kernel: Properties of their blends with fossil kerosene in the perspective of an alternative aviation fuel, Quality Control of 111-11-5, the main research area is biodiesel Acrocomia aculeate blend fossil kerosene fuel property.

Oil either from macaub́a (Acrocomia aculeate) and palm (Elaeis guineensis) fruit kernel was transesterified with methanol through the classical reaction with homogeneous alk. catalyst. The produced fatty acid Me esters (FAME) were further fractionated via atm. distillation as a step to obtain enriched fractions in short-mol. chain esters, ranging from C8 to C14, in a perspective to be blended with the conventional mineral jet fuel (Jet A-1). In this report, such blends of light biodiesels with Jet A-1 kerosene are described for their d., distillation fractions according to the temperature, structure changes under thermal treatments, by thermogravimetry and differential calorimetry analyses, f.p., flash point, and calorific value. The blends corresponding to 5, 10 and 20 vol% in enriched short-chain esters with kerosene revealed values well within the recommended limits by the ASTM D1655. Light biodiesels, which are rich in lauric acid (C12:0) Me esters are suitable to be blended with the Jet A-1 kerosene up to at least 5 vol%. Those blends could produce virtually very similar fuels, regarding the main tech. standard properties, to the conventional fossil kerosene for jet engines, particularly concerning the moisture content, the d., its behavior in distillation and the flash point.

Renewable Energy published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Quality Control of 111-11-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics