Month: December 2022

Fan, Jing published the artcileExperimental research on the liquid thermal conductivity of mixtures of methyl caprate and ethyl caprate with n-undecane and n-tridecane, Synthetic Route of 110-42-9, the main research area is liquid thermal conductivity methyl ethyl caprate undecane tridecane.

Globally, biofuel is considered as the largest renewable energy source to substitute the petrochem. fuel and it is thus received a great amount of attention from both developed countries and developing countries. Among all the biofuels, biodiesel is strongly recommended as a promising alternative fuel for traditional internal combustion engines. Thermal conductivity is an essential transport property of fuel, and is vital in the flow and heat transfer process. Therefore, it is necessary to conduct the research associated with fuel’s thermal conductivity In this work, four binary fuel mixtures containing biodiesel components Me caprate and Et caprate with n-undecane and n-tridecane were prepared resp., and the liquid thermal conductivity of which were measured by the transient hot wire method system. The measurement was conducted at the temperature from 292 K to 362 K at atm. pressure. The exptl. data reported here have an uncertainty of less than 2%. In addition, a correlation about the relationship between the liquid thermal conductivity with temperature and the esters’ concentration in different fuel blends has been correlated.

Journal of Molecular Liquids 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

Zheng, Xiong published the artcileExperimental Studies of Thermal Conductivity of Three Biodiesel Compounds: Methyl Pentanoate, Methyl Octanoate, and Methyl Decanoate, SDS of cas: 110-42-9, the main research area is thermal conductivity biodiesel compound methyl pentanoate octanoate decanoate.

Biodiesels are mainly composed of fatty acid Me esters (FAMEs). Before using them for industrial applications, it is essential to study the thermophys. properties of FAMEs. Thermal conductivity of fuels is required in many processes, such as design of heat exchangers and biodiesel combustion modeling. Thus, it is of great significance to acquire accurate exptl. data for obtaining accurate thermal conductivity data of FAMEs. In this work, thermal conductivities of Me pentanoate (MeC5:0), Me octanoate (MeC8:0), and Me decanoate (MeC10:0) were measured using a transient hot-wire setup in a wide temperature and pressure range. The measured temperature and pressure regions are from 293.15 to 523.15 K and 0.1 to 15 MPa, resp. The exptl. data were fitted into a dimensionless polynomial. Absolute average deviations and maximum deviations are 0.33 and 1.40% for MeC5:0, 0.25 and 0.86% for MeC8:0, and 0.25 and 1.05% for MeC10:0, resp. Comparisons between this work and literature were carried out, and a good agreement was found between our data and literature data. Furthermore, three predictive models were used to describe the present data.

Journal of Chemical & Engineering Data 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, SDS of cas: 110-42-9.

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

Zhou, Yi published the artcileChemical kinetic modeling study of methyl esters oxidation: Improvement on the prediction of early CO2 formation, Related Products of esters-buliding-blocks, the main research area is kinetics model biodiesel methyl ester oxidation carbon dioxide.

The early CO2 formation is a characteristic for the Me esters group of biodiesel. A new reaction pathway was added to skeletal Me esters mechanism for improving the prediction of early CO2 formation. The Me decanoate, Me 9-decenoate, Me 5-decenoate and Me stearate sub-mechanisms with added reaction pathway were optimized by adjusting reaction rate constants for more accurate prediction. Based on decoupling methodol., a new skeletal mechanism for Me butanoate was constructed by integrating detailed H2/CO/C1 sub-mechanism, reduced C2-C3 sub-mechanism and Me butanoate sub-mechanism. These improved mechanisms were validated well in a shock tube for ignition delay times and in a jet-stirred reactor for major species concentrations over wide operating conditions, resp. When compared to available mechanism in the literature, the present mechanism has good improvement for the prediction of early CO2 formation. Also, the effect of newly added reactions on ignition delay times was analyzed by sensitivity anal. method. Added reaction of Fuel Radical = ME2J + Short Chain Hydrocarbon mainly causes the influence on ignition delay time at high temperature, and decrease the reactivity of oxidation of fuel radical. The reaction of OCHO + M<=>H + CO2 + M dominates the early CO2 formation, and makes less contribution to production of CO2 with higher temperature The improved mechanisms, which consist of Me esters from a relatively short to long C chain, have a good performance for the prediction of early CO2 formation.

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, Related Products of esters-buliding-blocks.

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

Numwong, Natthida published the artcileEffect of Pd particle size on activity and cis-trans selectivity in partial hydrogenation of soybean oil-derived FAMEs over Pd/SiO2 catalysts, Recommanded Product: Methyl docosanoate, the main research area is palladium size silica Soybean fatty acid methyl ester hydrogenation.

Partial hydrogenation of soybean oil-derived fatty acid Me esters (FAMEs) was performed to improve oxidative stability of biodiesel. The reaction was tested in a semi-batch reactor at 100°C, 0.4 MPa. The effect of Pd particle size on activity and cis-trans selectivity was investigated over SiO2- and MCM-41-supported Pd catalysts, with different Pd loadings (0.5 and 1 weight%). For Pd/SiO2 catalysts with relatively large Pd particle sizes (6.1-7.8 nm), the adsorption of polyunsaturated C18:2 and C18:3 FAMEs was promoted on the flat metal surface, providing 2- to 3-fold higher turnover frequency (TOF) compared with Pd/MCM-41 catalysts. In contrast, the Pd/MCM-41 catalysts with relatively small Pd particle sizes (2.7-4.0 nm), showed higher selectivity towards the desired monounsaturated C18:1 FAMEs due to lower affinity of isolated double bond (presented in C18:1) on the Pd surface. In addition, selectivity towards the desired cis-C18:1 FAMEs was found to be highly sensitive to Pd particle size. The 0.5Pd/MCM-41 catalyst with small Pd particle size (2.7 nm), provided high cis-C18:1 selectivity, resulting in a biodiesel with better cold flow property compared with the trans-isomers. With partial hydrogenation over the prepared Pd catalysts, biodiesel with significantly improved oxidative stability (>10 h) could be obtained.

Fuel Processing Technology 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, Recommanded Product: Methyl docosanoate.

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

Yadav, Meena published the artcileTransesterification of used vegetable oil using BaAl2O4 spinel as heterogeneous base catalyst, Application of Methyl docosanoate, the main research area is barium aluminum oxide vegetable oil transesterification heterogeneous catalyst.

Present study aim to synthesize biodiesel using a heterogeneous base catalyst, barium aluminate (BaAl2O4) and used vegetable oil (UVO) feedstock via transesterification reaction. The catalyst was synthesized using co-precipitation route and characterized using techniques TG-DT anal., XRD, FTIR, HRSEM-EDX, textural properties, and basicity. The best exptl. condition of transesterification reaction was found at methanol to oil molar ratio 21:1, catalyst dose 4 wt%, reaction temperature of 65 ± 0.5°C for 150 min of reaction duration and 600 rpm stirring rate which resulted in 93.28% conversion of Me ester. Five cycle reusability of the synthesized catalyst after high-temperature regeneration was also investigated at optimized reaction conditions. Moreover, kinetics and thermodn. studies of biodiesel synthesis reaction were also studied and Ea = 61.48 kJ/mol, A = 5.95 × 107 min-1, ΔH = 55.873 kJ mol-1, ΔS = -0.136 kJ mol-1 K-1, and ΔG (at 338 K) = 101.847 kJ mol-1 were obtained resp. The important fuel properties such as acid value, d., kinematic viscosity (40°C) calorific value, flash point, fire point, cloud point, pour point, and cetane number of synthesized biodiesel were analyzed and found satisfactory with ASTM D 6751 specifications. In addition, the green chem. matrix E-factor and PMI values were also formulated.

Energy Conversion and Management 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 of Methyl docosanoate.

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

Orege, Joshua Iseoluwa published the artcileEffect of alkaline pretreatment on the properties of Nigerian castor seed (Ricinus communis L.) oil and biodiesel produced thereof, Quality Control of 929-77-1, the main research area is castor seed oil biodiesel alk pretreatment physicochem property Nigeria.

This work focuses on production of biodiesel from natural and refined castor seed oil. Oil was extracted with normal-hexane solvent at 60°C using Soxhlet apparatus and pretreated by alk. refining process before transesterification with methanolic potassium hydroxide solution as catalyst. The effect of alk. refining on the oil characteristics and biodiesel quality parameters was investigated using standard test methods and fatty acid Me ester was characterized using gas chromatog. Results revealed that alk. refining had significant improvement on the oil and biodiesel characteristics. Yield of 43.9 and 46.2% were obtained for refined and unrefined castor oil resp. while biodiesel yield from refined and unrefined castor oil was 43.5 and 41.7% resp. Ricinoleic acid (84.9%) was prevalent in the oil with lignoceric (0.03%) as the smallest. The conformity of refined castor oil biodiesel with EN 14214, ASTM and India biodiesel standards makes it viable economically in Nigeria.

Oriental Journal of Chemistry 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, Quality Control of 929-77-1.

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

Bian, Yuhang published the artcileBiodiesel Production Over Esterification Catalyzed by a Novel Poly(Acidic Ionic Liquid)s, Formula: C11H22O2, 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. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Formula: C11H22O2.

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

Seniorita, Latifa published the artcilePrediction of solidification behavior of biodiesel containing monoacylglycerols above the solubility limit, Related Products of esters-buliding-blocks, the main research area is biodiesel monoacylglycerol solidification solubility.

Monoacylglycerols (MAGs) are typical impurities in biodiesel (fatty acid Me esters, FAMEs) and are often the cause of solid precipitation because of their high m.ps. In this study, the liquidus temperature of biodiesel, below which solidification of biodiesel components can occur, was measured by differential scanning calorimetry or visual observation, and was predicted by thermodn. models. First, the solubility limit of MAGs, defined as the total MAG content above which MAGs can solidify before FAMEs, was found to be about 0.25 wt% for coconut Me esters and about 0.5 wt% for palm Me esters and rapeseed Me esters. For biodiesel containing MAGs above the solubility limit, the compound formation (CF) model showed good agreement with the exptl. determined liquidus temperatures This thermodn. model assumed different types of MAGs solidifying simultaneously while forming mol. compounds However, within the range of the total MAG content of actual biodiesel (typically less than 0.7 wt%), the number of fitting parameters in the CF model was excessive. This led to the use of a simplified version of the CF model with only one parameter, which still fitted the exptl. results well. One parameter value was determined for biodiesel from one feedstock, allowing the liquidus temperature of biodiesel from a known feedstock to be predicted based only on the total MAG content, even for biodiesel containing diacylglycerols in addition to MAGs.

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, Related Products of esters-buliding-blocks.

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