Category: esters-buliding-blocks

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, Recommanded Product: Methyl decanoate, 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. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Recommanded Product: Methyl decanoate.

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, Synthetic Route of 110-42-9, 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. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Synthetic Route of 110-42-9.

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

Hosseini, Sayed Mostafa published the artcileViscosities of some fatty acid esters and biodiesel fuels from a rough hard-sphere-chain model and artificial neural network, Formula: C10H20O2, the main research area is viscosity fatty acid ester biodiesel fuel; rough hard sphere chain model artificial neural network.

This work addresses the prediction of dynamic viscosities of several fatty acid esters and biodiesel fuels using a semi-theor. model and artificial neural network as well. The semi-theor. model used rough hard-sphere theory for the correlation and prediction of dynamic viscosities. In this respect, a smooth hard-sphere-chain expression and a coupling parameter of translational-rotational motions were employed to develop the rough hard-sphere-chain scheme. The three mol. parameters as well as the liquid densities required in this model were taken from previously developed perturbed Yukawa-chain equation of state (Fluid Phase Equilibrium, 372 (2014) 105-112). Artificial neural network modeling employed a multilayer perceptron comprising one hidden layer and 21 neurons, managed according to the constructive approach. The performance of both semi-theor. and ANN model were checked by predicting dynamic viscosities over the temperature range within 283-393 K and pressures up to 140 MPa with the average absolute relative deviation of 3.10% (for 648 data points) and 0.91% (for 796 data points), resp. The ANN model developed herein, was trained, validated and tested for the set of data gathered, pointing that the efficiency of the neural network model was found excellent on the entire dataset.

Fuel published new progress about Biodiesel fuel. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Formula: C10H20O2.

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

Florido, Priscila M. published the artcileStudy of FAME model systems: Database and evaluation of predicting models for biodiesel physical properties, Recommanded Product: Methyl octanoate, the main research area is biodiesel FAME system database evaluation predicting model.

The present paper reports a viscosity and d. unpublished database of systems formed for fatty acid Me esters (FAMEs), leading to 426 exptl. data points of each property. Kay’s mixing rule and Grunberg-Nissan equation were used to estimate data and the group contribution models GC-VOL and GC-UNIMOD were used to predict d. and viscosity, resp. For surface tension, parameters of a Wilson modified equation were adjusted and tested in systems with composition similar to biodiesel. D. estimations resulted in global average relative deviations (ARD) of 0.02%, 0.07% and 0.15% for Kay’s mixing rule weighted in mass and molar fractions, and GC-VOL model, resp. For viscosities, GC-UNIMOD was the most accurate model with global ARD of 5.17%. The surface tension prediction resulted in global ARD minor than 7.00%. These results are an important tool to improve the biodiesel production, its modeling and simulation.

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, Recommanded Product: Methyl octanoate.

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

Florido, Priscila M. published the artcileStudy of FAME model systems: Database and evaluation of predicting models for biodiesel physical properties, Product Details of C23H46O2, the main research area is biodiesel FAME system database evaluation predicting model.

The present paper reports a viscosity and d. unpublished database of systems formed for fatty acid Me esters (FAMEs), leading to 426 exptl. data points of each property. Kay’s mixing rule and Grunberg-Nissan equation were used to estimate data and the group contribution models GC-VOL and GC-UNIMOD were used to predict d. and viscosity, resp. For surface tension, parameters of a Wilson modified equation were adjusted and tested in systems with composition similar to biodiesel. D. estimations resulted in global average relative deviations (ARD) of 0.02%, 0.07% and 0.15% for Kay’s mixing rule weighted in mass and molar fractions, and GC-VOL model, resp. For viscosities, GC-UNIMOD was the most accurate model with global ARD of 5.17%. The surface tension prediction resulted in global ARD minor than 7.00%. These results are an important tool to improve the biodiesel production, its modeling and simulation.

Renewable Energy published new progress about Biodiesel fuel. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Product Details of C23H46O2.

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

Macawile, Maria Cristina published the artcileGreen synthesis of sulfonated organosilane functionalized multiwalled carbon nanotubes and its catalytic activity for one-pot conversion of high free fatty acid seed oil to biodiesel, Application In Synthesis of 929-77-1, the main research area is mercaptopropyltrimethoxysilane carbon nanotube catalyst green synthesis Hibiscus oil biodiesel.

An environmentally friendly surface modification method was applied to synthesize solid acid catalyst suitable for biodiesel production The catalyst was prepared from multiwalled carbon nanotube (MWCNT) and 3-mercaptopropyltrimethoxysilane (3-MPTMS) oxidized in hydrogen peroxide under supercritical carbon dioxide (scCO2). The carbon dioxide under supercritical condition with ethanol as cosolvent allows swift transportation and promotes uniform distribution of organosilane groups on randomly entangled and layered orientation of MWCNT. The catalyst was characterized by using Field emission SEM-energy dispersive x-ray (FESEM-EDX), Thermogravimetric anal. (TGA), Fourier transform IR (FTIR) spectroscopy, X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET) anal. and Time-of-Flight secondary ion mass spectrometry (TOF-SIMS). The catalytic activity of the catalyst was tested using a high free fatty acid (FFA)-containing Hibiscus cannabinus (kenaf) oil, and the fatty acid Me esters (FAME) products from simultaneous esterification and transesterification reactions were quantified. To compare with scCO2 method, an acid catalyst was also prepared using liquid chem. deposition that resulted in only 45.11% biodiesel conversion. On the other hand, the optimum conversion of 93.10% was obtained using a scCO2 synthesized catalyst at the following transesterification conditions: temperature = 63°C, methanol:oil ratio = 14:1, 10 wt % catalyst and time = 240 min.

Journal of Cleaner Production published new progress about Biodiesel fuel. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Application In Synthesis of 929-77-1.

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