Category: 931-40-8

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Boujioui, Fadoi; Damerow, Helen; Zhuge, Flanco; Gohy, Jean-Francois researched the compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one( cas:931-40-8 ).Synthetic Route of C4H6O4.They published the article 《Solid Polymer Electrolytes Based on Copolymers of Cyclic Carbonate Acrylate and n-Butylacrylate》 about this compound( cas:931-40-8 ) in Macromolecular Chemistry and Physics. Keywords: cyclic carbonate acrylate copolymer solid polymer electrolyte ionic conductivity. We’ll tell you more about this compound (cas:931-40-8).

Solid polymer electrolytes (SPEs) are prepared by mixing poly((2-oxo-1,3-dioxolan-4-yl)methyl acrylate-random-n-butylacrylate) [P(cyCA-r-nBA)] statistical copolymers with bis(trifluoromethane)sulfonimide lithium salt. The P(cyCA-r-nBA) copolymers are synthesized by reversible addition-fragmentation chain transfer polymerization and different molar masses as well as copolymer composition are targeted in order to study the influence of the mol. parameters on the thermal, mech., and electrochem. properties of the SPEs obtained after mixing the copolymers with lithium salts. In the investigated exptl. window, it is shown that the thermal and mech. properties of the SPEs mainly depend on the composition of the copolymer and are poorly influenced by the molar mass. In sharp contrast, the ionic conductivities are more deeply influenced by the molar mass than by the composition of the copolymers. In this respect ionic conductivity values ranging from 4.2 x 10-6 S cm-1 for the lower molar mass sample to 8 x 10-8 S cm-1 for the higher molar mass one are measured at room temperature for the investigated SPEs.

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 931-40-8, is researched, Molecular C4H6O4, about Influence of the Counterion on the Synthesis of Cyclic Carbonates Catalyzed by Bifunctional Aluminum Complexes, the main research direction is pyrazolylphenylethanol preparation aluminum complexation counterion effect catalysis; cyclic carbonate preparation epoxide reaction carbon dioxide; bifunctional alkyl aluminum complex preparation catalyst cyclic carbonate preparation; crystal mol structure diethylaluminum pyrazolylphenylethanol complex.Recommanded Product: 931-40-8.

New bifunctional aluminum complexes have been prepared with the aim of studying the effect of a counterion on the synthesis of cyclic carbonates from epoxides and carbon dioxide (CO2). Neutral ligand, 2,2-bis(3,5-dimethylpyrazol-1-yl)-1-[4(dimethylamino)phenyl]-1-phenylethanol (1) was used as a precursor to obtain four novel mesylate, chloride, bromide, and iodide zwitterionic NNO ligands (2-5). The reaction of these ligands with 1 or 2 equivalent of AlR3 (R = Me, Et) allowed the synthesis of mono- and bimetallic bifunctional aluminum complexes [AlR2(κ2-mbpzappe)]X [X = Cl, R = Me (6), Et (7); X = Br, R = Me (8), Et (9); X = I, R = Me (10), Et (11)] and [{AlR2(κ2-mbpzappe)}(μ-O){AlR3}]X [X = MeSO3, R = Me (12), Et (13); X = Cl, R = Me (14), Et (15); X = Br, R = Me (16), Et (17); X = I, R = Me (18), Et (19)] via alkane elimination. These complexes were studied as catalysts for the synthesis of cyclic carbonates from epoxides and CO2. Iodide complex 11 showed to be the most active catalyst for terminal epoxides, whereas bromide complex 9 was the optimal catalyst when internal epoxides were used, showing the importance of the nucleophile cocatalyst on the catalytic activity.

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called E-waste derived silica-alumina for eco-friendly and inexpensive Mg-Al-Ti photocatalyst towards glycerol carbonate (electrolyte) synthesis: Process optimization and LCA, published in 2022-03-01, which mentions a compound: 931-40-8, mainly applied to magnesium aluminum titanium photocatalyst glycerol carbonate synthesis; E-waste Valorization; Glycerol carbonate; LCA; LDO photocatalyst; PCB derived silica-alumina; Solar simulated quartz halogen radiation, Name: 4-(Hydroxymethyl)-1,3-dioxolan-2-one.

Valorization of e-waste, i.e. waste printed circuit board (WPCB) through mechano-chem. activation to obtain silica as the catalyst support and alumina as the catalyst precursor for eco-friendly synthesis of inexpensive highly proficient photocatalyst has been explored. The WPCB derived silica-supported layered double oxide photocatalyst (MATLSW) and its counterpart (MATLSC) involving com. silica and alumina precursors were synthesized through the wet-impregnation method under energy-efficient solar simulated quartz halogen lamp (SSQHL) irradiations to improve its photocatalytic properties compared to conventional methods. The prepared MATLSW possessed a significantly low band-gap-energy (1.58 eV) that rendered efficient photocatalysis in the green-synthesis of glycerol carbonate (GC) (an effective electrolyte). The catalytic performance of the optimal MATLSW resulted in a superior yield of GC (98.68%) compared to that rendered by MATLSC catalyst (GC yield: 96.56%) at optimal process conditions. Detailed life cycle assessment (LCA) of the entire process (deploying Ecoinvent 3.5 database) dictated conducive environmental impacts concerning 1 kg GC synthesis alongside a scale-up study for 1 MT GC synthesis encompassing silica-alumina extraction from WPCB, MATLSW preparation, and employment of SSQHL-radiated batch reactor (SSQHLBR) (56.64% less energy consumption than conventional). The overall process deploying the novel MATLSW in conjunction with the effectual reactor demonstrated superiority over the conventional GC synthesis process through appreciable reductions of environmental impact parameters, namely GWP, FDP, and HTP by 5.78%, 3.60%, and 5.72% resp. The developed green process for e-waste utilization can procreate an effective waste management protocol towards a cleaner world.

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 931-40-8, is researched, SMILESS is O=C1OCC(CO)O1, Molecular C4H6O4Journal, IOP Conference Series: Materials Science and Engineering called Investigation on the effect of ultrasonic-assisted transesterification for green synthesis of glycerol carbonate from crude glycerol, Author is Lo, P. K.; Leong, S. Y.; Tan, C. Y., the main research direction is investigation effect ultrasonic assisted transesterification green synthesis glycerol carbonate; crude glycerol.Safety of 4-(Hydroxymethyl)-1,3-dioxolan-2-one.

The present work demonstrates the utilization of ultrasonic-irradiation for synthesis of glycerol carbonate (GC) with direct use of crude glycerol (C.Gly) and di-Me carbonate (DMC). This transesterification reaction was catalyzed by calcium oxide (CaO) and the effect of ultrasonic-assisted transesterification reaction was studied. In order to verify the contents of C.Gly, the C.Gly obtained from biodiesel production plant was characterized and the results showed that C.Gly consists of 71.21%weight/weight glycerol, 16.01%weight/weight of moisture, 7.10%weight/weight of methanol, 2.76%weight/weight of ash, 3.60%weight/weight of soap and 10.02%weight/weight of matter organic non-glycerol (MONG). Subsequently, effects of reaction temperature, reaction time, molar ratios of reactants and catalyst loading on C.Gly conversion and GC yield have been investigated. The highest yield of GC (95.41%) was attained with 9 mol% of CaO catalyst loading, 3:1 molar ratio of (DMC:C.Gly) at 70°C for 90 min. The yield of GC was observed to rise with all the reaction parameters till the optimum conditions obtained. Moreover, the yield of GC obtained from ultrasonic-assisted was compared with the conventional-heating method done in the previous study. It was noticeable that the yield of GC obtained via ultrasonic-assisted was found to be 51.44% better than conventional-heating transesterification. In conclusion, the production of GC via ultrasonic-assisted transesterification shows better feasibility than that of the conventionalheating method.

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 931-40-8, is researched, Molecular C4H6O4, about Efficient and simultaneous cleaner production of biodiesel and glycerol carbonate in solvent-free system via statistical optimization, the main research direction is biodiesel glycerol dimethyl methanol carbonate novozyme435.Category: chiral-catalyst.

A solvent-free co-production process for biodiesel and glycerol carbonate (GC) was developed based on enzyme (Novozyme 435). Glycerol obtained from transesterification reactions could be directly converted to GC. The reactions were optimized using the response surface methodol. (RSM) sep. The optimal factors, which are enzyme loading, molar ratio of di-Me carbonate to soybean oil, water content, and reaction temperature, were derived from the response optimizer. The results of optimization for biodiesel and GC production were re-analyzed by overlapping the contour plots of the factors. The following were the optima obtained: enzyme loading of 25 g/L, molar ratio of 15:1, water content of 0.082% (volume/volume), and reaction temperature of 59.65°C. When the co-production of biodiesel and GC was conducted using the optima, biodiesel and GC production were achieved with conversions of 97.6% and 95.5%, resp.

Here is just a brief introduction to this compound(931-40-8)Category: chiral-catalyst, more information about the compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one) is in the article, you can click the link below.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Catalysis Letters called Acidic-Basic Bifunctional Magnetic Mesoporous CoFe2O4@(CaO-ZnO) for the Synthesis of Glycerol Carbonate, Author is Zhang, Pingbo; Chen, Yifeng; Zhu, Mengnan; Yue, Chengguang; Dong, Yuming; Leng, Yan; Fan, Mingming; Jiang, Pingping, which mentions a compound: 931-40-8, SMILESS is O=C1OCC(CO)O1, Molecular C4H6O4, Product Details of 931-40-8.

Magnetic mesoporous CoFe2O4@(CaO-ZnO) exhibited good catalytic activity in the transesterification of glycerol and di-Me carbonate to yield glycerol carbonate. The glycerol conversion of 97.7% and glycerol carbonate yield of 96.9% could be obtained in this reaction system under the optimized reaction conditions. CoFe2O4@(CaO-ZnO) was characterized by a series of techniques including TPD, XRD, SEM, TEM, EDS, VSM and BET to evaluate the physico-chem. properties of the catalyst. It was demonstrated that the interaction of acid-base sites improved the catalysis performance of CoFe2O4@(CaO-ZnO): the strong basic sites were beneficial to the activation of glycerol to glyceroxide anion which could increase glycerol conversion, and the acid site contributes to the carbonyl activation of di-Me carbonate, converts glyceroxide anion to glycerol carbonate, and improves the selectivity of glycerol carbonate. Meanwhile, the solid-liquid separation process after reaction would be simplified significantly considering CoFe2O4@(CaO-ZnO) could be easily separated from the reaction mixture under magnetic action.

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Name: 4-(Hydroxymethyl)-1,3-dioxolan-2-one. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one, is researched, Molecular C4H6O4, CAS is 931-40-8, about Development of two plant-wide glycerol carbonate production processes: Design, optimization and environmental analysis.

This work firstly presents the rigorous modeling of the two plant-wide glycerol carbonate (GC) production processes through the transesterification reaction of glycerol (GLY). One is the separated reaction and distillation (SRD) process, and the other is the reactive distillation-based (RD) process. This work covers the thermodn. and kinetic verification, the rigorous simulation of the two processes, and optimization of the proposed processes based on simulated annealing method. From optimization, it is found that the RD process reduced about 33.1% cost from the SRD process. Also, carbon emission analyses are performed on the two optimized processes, in which the CO2 emission amount per unit amount of GC formation (CO2-e, in kg CO2/kg GC) are calculated It is reported that the RD process reduces 36.1% of CO2 emission (CO2-e=0.207) compared with the SRD process (CO2-e=0.322).

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one(SMILESS: O=C1OCC(CO)O1,cas:931-40-8) is researched.SDS of cas: 39901-94-5. The article 《MgxAl-LDHs layered double hydroxides catalysts for boosting catalytic synthesis of biodiesel and conversion of by-product into valuable glycerol carbonate》 in relation to this compound, is published in Journal of the Taiwan Institute of Chemical Engineers. Let’s take a look at the latest research on this compound (cas:931-40-8).

A series of layered double hydroxides (MgxAl-LDHs) catalysts is successfully prepared and effectively transesterificated triglycerides to produce biodiesel and glycerol carbonate, resp. MgxAl-LDHs catalysts are synthesized by changing the Mg/Al ratio of the LDH hosts and fully characterized by several techniques, including XRD, N2 adsorption, SEM. The effects of ratios of Mg/Al catalyst, reaction temperature, catalyst dosage are thoroughly investigated to determine the optimal reaction conditions. A yield of biodiesel and glycerol carbonate could reach up to 87.5% and 93.4%, resp., over Mg5Al-LDHs catalyst under batch condition. The transesterification glycerol for glycerol carbonate is successfully carried out in a stirring packed-bed reactor with MgxAl-LDHs coating on the spherical α-Al2O3 catalysts. Addnl., extra-particle mass transfer and intra-particle diffusion do not control the reaction rate. The yield of glycerol carbonate could reach up to 80.2% over Mg5Al-LDHs/α-Al2O3 catalyst.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one(SMILESS: O=C1OCC(CO)O1,cas:931-40-8) is researched.SDS of cas: 3066-84-0. The article 《Organic carbonate production utilizing crude glycerol derived as by-product of biodiesel production: a review》 in relation to this compound, is published in Energies (Basel, Switzerland). Let’s take a look at the latest research on this compound (cas:931-40-8).

A review. As a promising alternative renewable liquid fuel, biodiesel production has increased and eventually led to an increase in the production of its byproduct, crude glycerol. The vast generation of glycerol has surpassed the market demand. Hence, the crude glycerol produced should be utilized effectively to increase the viability of biodiesel production One of them is through crude glycerol upgrading, which is not economical. A good deal of attention has been dedicated to research for alternative material and chems. derived from sustainable biomass resources. It will be more valuable if the crude glycerol is converted into glycerol derivatives, and so, increase the economic possibility of the biodiesel production Studies showed that glycerol carbonate plays an important role, as a building block, in synthesizing the glycerol oligomers at milder conditions under microwave irradiation This review presents a brief outline of the physio-chem., thermodn., toxicol., production methods, reactivity, and application of organic carbonates derived from glycerol with a major focus on glycerol carbonate and di-Me carbonate (DMC), as a green chem., for application in the chem. and biotech. field. Research gaps and further improvements have also been discussed.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one, is researched, Molecular C4H6O4, CAS is 931-40-8, about Kinetics modeling of glycerol carbonate synthesis from glycerol and urea over amberlyst-15 catalyst, the main research direction is glycerol carbonate urea amberlyst catalyst kinetic modeling.SDS of cas: 931-40-8.

Synthesize of glycerol carbonate from glycerol and urea is an attractive path as glycerol carbonate has a large potential as a green solvent. The aim of the present study was to develop a kinetic model of glycerol carbonate synthesis with amberlyst-15 resins as a catalyst. The investigation was carried out at various temperatures from 353 to 383 K and catalyst loading from 0.25 to 1 weight% of glycerol. The exptl. results indicated that both temperature and catalyst loading have an important effect on the glycerol conversion. According to the exptl. result, the highest glycerol conversion was found 36.90% which was obtained using a molar ratio of urea to glycerol 1:3, catalyst loading of 1 weight%, stirrer speed of 700 rpm, the temperature of 383 K and reaction time of 5 h. A kinetic model was developed based on elementary steps that take place over the catalyst. The model estimated that the pre-exponential factor was 2.89.104 mol.g-1.min-1 and the activation energy was 50.5 kJ.mol-1. By comparing the simulation and exptl. data, it could be inferred that the model could predict the trend of exptl. data well over the range of temperature and catalyst loading investigated in the present study.

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