Category: esters-buliding-blocks

Zhan, Taotao published the artcileSpeed of Sound and Derivative Properties of Ethyl Laurate from Rayleigh-Brillouin Light-Scattering Spectroscopy, Synthetic Route of 110-42-9, the main research area is ethyl laurate sound velocity Rayleigh Brillouin light scattering.

The exptl. speeds of sound combined with Brillouin frequency shifts of Et laurate at temperatures from 294.97 to 572.89 K along six isobaric lines from 0.1 to 10.0 MPa were measured by Rayleigh-Brillouin light-scattering spectroscopy. The expanded relative uncertainty in the reported speeds of sound in Et laurate is estimated to be 1.3% (coverage factor k = 2 with a confidence level of 0.95). Within the temperature limits of 303.15-383.15 K and at pressures up to 10.0 MPa, the derived thermoacoustic properties of Et laurate including d., specific isobaric heat capacity, isentropic compressibility, isobaric thermal expansivity, isothermal compressibility, the difference in isobaric and isochoric heat capacity, internal pressure, and intermol. free length were studied. Because of the heavily updated data of d. and the speed of sound in the literature, a modified Jacobson’s model for biodiesels was proposed over the temperature range from 293.15 to 343.15 K, which is able to calculate the intermol. free length of Et laurate with higher accuracy compared with Jacobson’s model.

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, Synthetic Route of 110-42-9.

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

Cao, Xiyue published the artcileOne-step direct transesterification of wet yeast for biodiesel production catalyzed by magnetic nanoparticle-immobilized lipase, Recommanded Product: Methyl docosanoate, the main research area is lipase wet yeast biodiesel magnetic nanoparticle transesterification.

To develop a method for direct transesterification of wet yeast using immobilized lipase, the oleaginous yeast Saitozyma podzolica Zwy-2-3 and the lipase producing Burkholderia pyrrolica WZ10-3 were used as materials for production of biodiesel. Fe3O4@SiO2-CHO prepared by modifying Fe3O4 with TEOS, APTES and glutaraldehyde. The biocatalysts covalently cross-linked with WZ10-3 lipase by Fe3O4@SiO2-CHO were characterized by FTIR, XRD and TEM. When the enzyme dosage, glutaraldehyde concentration, temperature and time were 30.22 mL, 2.0%, 40°C and 4 h, the immobilized lipase activity and immobilization rate reached 10038.0 U/g and 96.9%, resp. The optimum temperatures for immobilized and free lipase were 60 degrees and 40 degrees. The immobilized enzyme still had 80% enzymic activity after 48 d storage at 4°C. The optimized conditions for the direct conversion of immobilized lipase to esterified wet yeast (one-step) were: enzyme dosage 2.5 g, reaction temperature 35°C; water content 15%; and molar ratio of n-hexane to methanol 3: 1. The transesterification rates of one-step method for oil and biomass were 98.12% and 56.11%, resp. In contrast, the two-step method was only 88.75% and 51.21%. The immobilized enzyme had 90% enzyme activity after 10 times of reuse.

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, Recommanded Product: Methyl docosanoate.

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

Jindapon, Wayu published the artcileContinuous production of fatty acid methyl esters and high-purity glycerol over a dolomite-derived extrudate catalyst in a countercurrent-flow trickle-bed reactor, Name: Methyl decanoate, the main research area is biodiesel fatty acid methyl ester palm oil transesterification catalyst; calcium magnesium oxide catalyst countercurrent flow trickle bed reactor.

In this work, fatty acid Me esters (FAME), as biodiesel components, were continuously produced via the heterogeneously catalyzed transesterification of palm oil with methanol vapor in a countercurrent-flow trickle-bed reactor. Dolomitic rock was used as natural calcium source in the preparation of the calcium oxide-based extrudate catalyst via a phys. mixing method. Effects of operating parameters on the FAME yield and the two-phase flow behavior were investigated. The reaction system was characterized by a high mass diffusion resistance at gas-liquid-solid interfaces due to the low solubility of methanol in triglycerides and the high viscosity of oil. Mixing palm oil with com. grade Me decanoate, a C10 Me ester (C10 CME), at a 1:1 mass ratio during the start-up period promoted FAME production The FAME yield was enhanced by increasing the operating temperature and the methanol flow rate, while operation at a high oil flow rate severely decreased the FAME yield. The concentration of C10 CME, which acted as an emulsifier, in the catalyst bed was crucial to maintain the FAME production stability. In addition to a high FAME yield (ca. 92.3 wt%), the system provided glycerol, obtained without any washing, at a high purity of 93.6 wt%.

Renewable Energy 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, Name: Methyl decanoate.

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

Pandiangan, Kamisah D. published the artcileProduction of magnesium oxides from raw salt solution using electrochemical precipitation method as a heterogeneous catalyst for transesterification of coconut oil, Application In Synthesis of 110-42-9, the main research area is coconut oil magnesium oxide electrochem precipitation transesterification.

This study was conducted to explore the production of magnesium oxide from raw salt solution using electrochem. precipitation, followed by calcination. Electrochem. precipitation was conducted by electrolysis of the salt solution using nickel rods as cathodes and graphite as anodes. Two sets of salt solutions were prepared: one set without pretreatment and another with BaCl2 pretreatment. The solutions were used to study the effect of salt concentration, potential, and electrolysis time. The representatives of the MgO produced were tested as catalysts for transesterification of coconut oil. The results indicate that optimum mass of precipitate was produced from 400 mg/L salt solution electrolyzed using 8 V for 60 min. Elemental anal. using X-Ray Fluorescence (XRF) revealed the presence of Mg as the main component of the precipitate, confirming the electrochem. conversion of Mg2+ into solid Mg(OH)2. The MgO with the purity of 74.23% and 88.87% was produced from non-pretreated and pretreated salt solution, resp. The transesterification experiments indicate that the yield of 90% and 98% was achieved using the MgO produced from non-pretreated and pretreated salt solution, resp.

Revista de Chimie (Bucharest, Romania) 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, Application In Synthesis of 110-42-9.

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

Pandiangan, Kamisah D. published the artcileProduction of magnesium oxides from raw salt solution using electrochemical precipitation method as a heterogeneous catalyst for transesterification of coconut oil, Safety of Methyl octanoate, the main research area is coconut oil magnesium oxide electrochem precipitation transesterification.

This study was conducted to explore the production of magnesium oxide from raw salt solution using electrochem. precipitation, followed by calcination. Electrochem. precipitation was conducted by electrolysis of the salt solution using nickel rods as cathodes and graphite as anodes. Two sets of salt solutions were prepared: one set without pretreatment and another with BaCl2 pretreatment. The solutions were used to study the effect of salt concentration, potential, and electrolysis time. The representatives of the MgO produced were tested as catalysts for transesterification of coconut oil. The results indicate that optimum mass of precipitate was produced from 400 mg/L salt solution electrolyzed using 8 V for 60 min. Elemental anal. using X-Ray Fluorescence (XRF) revealed the presence of Mg as the main component of the precipitate, confirming the electrochem. conversion of Mg2+ into solid Mg(OH)2. The MgO with the purity of 74.23% and 88.87% was produced from non-pretreated and pretreated salt solution, resp. The transesterification experiments indicate that the yield of 90% and 98% was achieved using the MgO produced from non-pretreated and pretreated salt solution, resp.

Revista de Chimie (Bucharest, Romania) 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, Safety of Methyl octanoate.

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

Niju, S. published the artcileFish-Bone-Doped Sea Shell for Biodiesel Production from Waste Cooking Oil, Product Details of C9H18O2, the main research area is Tellina shell waste fish bone cooking oil biodiesel production.

Transesterification of waste cooking oil with methanol using calcined waste fish bone and sea shell catalyst was studied. An inexpensive and environmentally benign catalyst was prepared from waste fish bones (WFB) and Tellina tenuis shells (TTS), and the catalyst was characterized by Fourier transform IR spectroscopy (FTIR), SEM (SEM), Brunauer-Emmett-Teller, X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS) techniques. From XRD, it was confirmed that the major phase of WFB was hydroxyapatite and calcium oxide was found to be the dominant fraction of calcined TTS. FTIR and SEM-EDS anal. of WFB confirmed the presence of hydroxyapatite exhibiting hexagonal structure. Different combinations of WFB and TTS have been developed to obtain novel catalyst composition Above 94% conversion was reported with various combinations of WFB and TTS using 3 wt% catalyst, 12:1 molar ratio, 65°C and 1.5 h.

Journal of the Institution of Engineers (India): Series E 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

Balakrishnan, A. published the artcileExperimental correlation of laminar flame pollutant emission indices with methyl ester fuel degree of unsaturation and equivalence ratio, SDS of cas: 110-42-9, the main research area is methyl ester fuel unsaturation equivalence laminar fame pollutant emission.

Fuel unsaturation has been widely cited as a reason for the increased nitric oxide emissions from compression ignition engines when fueled with Me esters (biodiesels) and their blends with petroleum counterparts. In an earlier study, a parameter called degree of unsaturation (DOU) was established to serve as a common platform across different fuel families (esters/alkanes/aromatics) to quantify the effects of fuel unsaturation, particularly with petroleum/biodiesel blends. DOU can be evaluated based on the average mol. formula of the fuel alone without involving complex and expensive exptl. procedures such as those involved in the measurement of iodine number and bromine number In this article, the fuel unsaturation effects on the emission characteristics from the laminar flames of blends of various pre-vaporized Me esters, such as Me oleate, neat biodiesels (from Me esters of soy, canola, palm and rapeseed feedstock) and biodiesel blends were investigated at four burner-exit equivalence ratios of 0.9, 1.0, 1.2 and 1.5. The selection of these fuels for this study was an attempt to isolate the fuel unsaturation effect of biodiesels, and their blending effect with petroleum fuels. Exptl. correlations were developed between DOU (over a range of 1.7-2.5) and global NO and CO emission indexes as a function of equivalence ratio. The effects of DOU on EINO were significantly influenced by the equivalence ratio, with the maximum influence at an equivalence ratio of 1.2.

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, SDS of cas: 110-42-9.

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

Balakrishnan, A. published the artcileExperimental correlation of laminar flame pollutant emission indices with methyl ester fuel degree of unsaturation and equivalence ratio, HPLC of Formula: 929-77-1, the main research area is methyl ester fuel unsaturation equivalence laminar fame pollutant emission.

Fuel unsaturation has been widely cited as a reason for the increased nitric oxide emissions from compression ignition engines when fueled with Me esters (biodiesels) and their blends with petroleum counterparts. In an earlier study, a parameter called degree of unsaturation (DOU) was established to serve as a common platform across different fuel families (esters/alkanes/aromatics) to quantify the effects of fuel unsaturation, particularly with petroleum/biodiesel blends. DOU can be evaluated based on the average mol. formula of the fuel alone without involving complex and expensive exptl. procedures such as those involved in the measurement of iodine number and bromine number In this article, the fuel unsaturation effects on the emission characteristics from the laminar flames of blends of various pre-vaporized Me esters, such as Me oleate, neat biodiesels (from Me esters of soy, canola, palm and rapeseed feedstock) and biodiesel blends were investigated at four burner-exit equivalence ratios of 0.9, 1.0, 1.2 and 1.5. The selection of these fuels for this study was an attempt to isolate the fuel unsaturation effect of biodiesels, and their blending effect with petroleum fuels. Exptl. correlations were developed between DOU (over a range of 1.7-2.5) and global NO and CO emission indexes as a function of equivalence ratio. The effects of DOU on EINO were significantly influenced by the equivalence ratio, with the maximum influence at an equivalence ratio of 1.2.

Fuel 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, HPLC of Formula: 929-77-1.

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

Balakrishnan, A. published the artcileExperimental correlation of laminar flame pollutant emission indices with methyl ester fuel degree of unsaturation and equivalence ratio, Category: esters-buliding-blocks, the main research area is methyl ester fuel unsaturation equivalence laminar fame pollutant emission.

Fuel unsaturation has been widely cited as a reason for the increased nitric oxide emissions from compression ignition engines when fueled with Me esters (biodiesels) and their blends with petroleum counterparts. In an earlier study, a parameter called degree of unsaturation (DOU) was established to serve as a common platform across different fuel families (esters/alkanes/aromatics) to quantify the effects of fuel unsaturation, particularly with petroleum/biodiesel blends. DOU can be evaluated based on the average mol. formula of the fuel alone without involving complex and expensive exptl. procedures such as those involved in the measurement of iodine number and bromine number In this article, the fuel unsaturation effects on the emission characteristics from the laminar flames of blends of various pre-vaporized Me esters, such as Me oleate, neat biodiesels (from Me esters of soy, canola, palm and rapeseed feedstock) and biodiesel blends were investigated at four burner-exit equivalence ratios of 0.9, 1.0, 1.2 and 1.5. The selection of these fuels for this study was an attempt to isolate the fuel unsaturation effect of biodiesels, and their blending effect with petroleum fuels. Exptl. correlations were developed between DOU (over a range of 1.7-2.5) and global NO and CO emission indexes as a function of equivalence ratio. The effects of DOU on EINO were significantly influenced by the equivalence ratio, with the maximum influence at an equivalence ratio of 1.2.

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

Sazawa, Kazuto published the artcileEvaluation of carbon mineralization and structural alterations of organic carbon in high-moor peat soils during incubation, Name: Methyl docosanoate, the main research area is organic carbon moor peat soil mineralization incubation.

The quantity and quality of soil organic matter (SOM) in the wetlands and peatlands are important for evaluating of the effects of environmental changes. This study’s aim was to evaluate the change in the chem. properties of SOM and dissolved organic matter (DOM) during a constant temperature incubation of high-moor peat soil under two types of vegetation. Incubation of high-moor peat soils collected from marsh vegetation and dwarf bamboo was conducted for 108 days at each temperature of 25°C and 35°C. The chem. properties of alk. extract and DOM in soil samples during incubation were analyzed by tetramethylammonium hydroxide thermochemolysis-gas chromatog.-mass spectrometry (TMAH-GC/MS) and fluorescence anal. The cumulative CO2 emission from peat under dwarf bamboo was higher than that of peat under marsh vegetation. During incubation at 35°C, plant and microbial residues in DOM extracted from dwarf bamboo soil were increased significantly at the early stages of culture. On the other hand, the components of DOM in the marsh vegetation soil sample did not significantly change between incubation at each temperature The fluorescence spectra showed that protein-like fluorescent DOM contained in dwarf bamboo soil is consumed by microorganisms, which promotes leaching of humic-like fluorescent DOM and carbon mineralization during the incubation period at a higher temperature Compared with marsh vegetation soil, the DOM in dwarf bamboo soil is susceptible to temperature rises and can be a larger source of CO2 emissions. This study shows that evaluation of DOM properties in soil could be useful to assess the effect of climate change on soil environment.

Journal of Soils and Sediments published new progress about Bamboo (dwarf). 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Name: Methyl docosanoate.

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