Category: 931-40-8

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Valorisation of glycerol and CO2 to produce biodegradable polymer nanoparticles with a high percentage of bio-based components, published in 2020-09-30, which mentions a compound: 931-40-8, Name is 4-(Hydroxymethyl)-1,3-dioxolan-2-one, Molecular C4H6O4, SDS of cas: 931-40-8.

The biodiesel industry has grown rapidly in the last years, leading to the production of 88 000 tons of waste glycerol in 2018. Glycerol is a bio-derived mol. already exploited in pharmaceutical and cosmetic industries for its beneficial emollient and antimicrobial properties, safety and low cost. However, since its production is increasing year by year, many efforts are being done to find new ways to exploit it and to produce new valuable bio-based mols. In particular, glycerol carbonate is a versatile mol. that can be produced from glycerol and another waste product, CO2. Despite its potentialities in further functionalization, harsh reaction conditions are often required for the synthesis of glycerol carbonate and its exploitation is often challenging. Therefore, an industrially scalable reaction to convert glycerol into high added-value compounds is urgently needed. Here, the aim is to demonstrate a feasible conversion of glycerol to glycerol carbonate-based vinyl monomers that can be conveniently incorporated in amphiphilic block copolymers by reversible addition-fragmentation chain transfer (RAFT) polymerization These block copolymers can be self-assembled in water to obtain nanoparticles with a bio-based content as high as 70% weight/weight Since both glycerol and glycerol carbonate are approved by the Food and Drug Administration (FDA) and considered as safe, the possibility of exploiting these bio-based nanoparticles for the controlled drug release was explored.

This compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one)SDS of cas: 931-40-8 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

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 Isocyanate-Free Fully Biobased Star Polyester-Urethanes: Synthesis and Thermal Properties, the main research direction is isocyanate free biobased star polyester urethane.Synthetic Route of C4H6O4.

A green strategy for the synthesis of nonisocyanate polyester-urethanes (NIPHEUs) was developed. These NIPHEUs were synthesized by step growth polymerization combining sugar-derived dimethyl-2,5-furan dicarboxylate (DMFD) with polyhydroxylurethanes (PHUs) adducts bearing four hydroxyl groups. The later hydroxyl urethane tetraols (HU-tetraols) building blocks were prepared by aminolysis of glycerol carbonate with two different aliphatic diamines having different chain lengths, 8 and 12 carbons. Qual. and quant. NMR analyses of the HU-tetraols showed the presence of primary and secondary hydroxyl moieties at different ratios. Hence, in the polycondensation stage, the stoichiometry of the diester was varied from 1 to 6 equiv in order to tailor the structural features of the prepared NIPHEUs. The success of the chain extension through polycondensation was confirmed by FTIR and NMR analyses. Thermal analyses of these new polymers demonstrated satisfactory thermal stability, with onset degradation temperatures ranging from 170 to 220°C where the main first degradation stage occurs. Their melting temperatures ranged between 93 and 110°C and seem to be driven by the thermal behavior of HU-tetraol monomers. Surprisingly, preliminary results from thermal analyses revealed the occurrence of a striking thermal change in the NIPHEUs upon repetitive heating cycles. This behavior may be related to a thermal-induced bond exchange probably driven by transcarbamoylation reaction. Such interesting vitrimer-like behavior for this new type of NIPHEUs would be unique and should be confirmed by a deeper study before leading to a new range of functional green materials.

This compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one)Synthetic Route of C4H6O4 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Related Products of 931-40-8. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one, is researched, Molecular C4H6O4, CAS is 931-40-8, about Transforming glycerol and CO2 into glycerol carbonate over La2O2CO3-ZnO catalyst – a case study of the photo-thermal synergism. Author is Li, Yajin; Liu, Huimin; Ma, Lan; Liu, Jiaxiong; He, Dehua.

The direct synthesis of glycerol carbonate via glycerol carbonylation by CO2 suffers from thermodn. limitation. In this study, light was introduced into the thermal-driven reaction system to synergistically break the equilibrium of the reaction. A series of xLa2O2CO3-ZnO catalysts were prepared using a hydrothermal method and used for the photo-thermal transformation of glycerol and CO2 into glycerol carbonate. Inductively coupled plasma-at. emission spectrometry (ICP-AES), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), CO2 temperature-programmed desorption (CO2-TPD), XPS, UV-visible (UV-vis) spectroscopy, photoluminescence (PL) spectroscopy and Fourier transform IR (FT-IR) spectrometry were employed to characterize the crystalline structure, the number of basic sites, textural properties and optical properties of the catalysts. The photo-thermal synergism as well as the cooperation between ZnO and La2O2CO3 contributed to its catalytic performance, thus achieving a glycerol conversion of 6.9% under the reaction conditions of 150°C, 5.5 MPa CO2, and 20 mmolGL gCat-1 with a reaction time of 6 h when 20% La2O2CO3-ZnO was used as the catalyst.

《Transforming glycerol and CO2 into glycerol carbonate over La2O2CO3-ZnO catalyst – a case study of the photo-thermal synergism》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one)Related Products of 931-40-8.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one, is researched, Molecular C4H6O4, CAS is 931-40-8, about One-pot synthesis of glycerol carbonate from glycerol using three-dimensional mesoporous silicates of K/TUD-1 under environmentally benign conditions.COA of Formula: C4H6O4.

In the present study, a series of potassium (K) incorporated three-dimensional mesoporous silica material (K/TUD-1) has been synthesized for the one-pot synthesis of glycerol carbonate through transesterification of glycerol with di-Me carbonate (DMC). The synthesized catalyst (K/TUD-1) has been characterized to confirm porosity by nitrogen adsorption-desorption isotherm, X-ray diffraction (XRD), XPS and transmission electron microscopy (TEM). Small-angle XRD revealed that TUD-1 is mesostructure in nature. Morphol. study revealed that TUD-1 exhibited a 3D structure without any agglomeration. The surface area of bare TUD-1 significantly declined with the incorporation of active metal from 632 m2/g to 430 m2/g. However, the basicity of K/TUD-1 improved, which is a highly desired property for the transesterification reaction. Batch exptl. results have been concluded that 7% K/TUD-1 has better catalytic activity for the conversion of glycerol to glycerol carbonate. Further investigation has been conducted on the influence of reaction parameters such as reaction temperature, reaction time, catalyst dosage, and DMC/glycerol molar ratio. Under optimized conditions the maximum glycerol carbonate yield (∼91.50%) was observed with catalyst dose of 6 weight% (of glycerol mass), DMC/glycerol molar ratio of 5, reaction temperature of 90°C in 2.5 h. Further, catalyst feasibility was also conducted at optimized conditions, and it sustains activity up to 4 cycles. The kinetics of the reaction was studied using the ODE 15 s solver in MATLAB.

《One-pot synthesis of glycerol carbonate from glycerol using three-dimensional mesoporous silicates of K/TUD-1 under environmentally benign conditions》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one)COA of Formula: C4H6O4.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

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 Hydrophilic modification of polycarbonate surface with surface alkoxylation pretreatment for efficient separation of polycarbonate and polystyrene by froth flotation, the main research direction is hydrophilic modification polycarbonate alkoxylation separation polystyrene froth flotation; Alkoxylation pretreatment; Flotation separation; Hydrophilic polycarbonate; Plastic recycling; Separation efficiency.Recommanded Product: 931-40-8.

Waste polystyrene (PS) and polycarbonate (PC) are crucial components arising from mixtures of plastic products, whose recycling is significantly limited by separation efficiency. In this work, to assist the flotation separation of PC and PS, we proposed a novel modification technol. of surface alkoxylation pretreatment (SAP) where PC surface reacted with glycerol and urea. The SAP could selectively transform the hydrophobic PC into hydrophilic plastic, while the PS remained its hydrophobic surface owing to the exclusion from SAP process. Benefiting from the hydrophilic PC, the separation efficiency of PS and PC could reach the maximum of 99.34% under optimum conditions (urea dosage of 5 g, pretreatment temperature of 130°C, pretreatment time of 10 min, flotation time of 2.5 min, frother concentration of 16.5 mg/L, and airflow rate of 7.2 mL/min). The mechanism of SAP was systematically analyzed by wettability, surface morphol., mol. weight, and chem. reactions. Compared with PS plastic, the pretreated PC presented better wettability, rougher surface, and significantly reducing mol. weight The improvement of PC hydrophilicity can be attributed to the cleavage of ester bonds on backbone chains and the introduction of hydrophilic hydroxyl groups. The effective SAP process proves that chem. recycling of waste plastic can provide a novel strategy for surface modification and flotation separation of PS and PC.

《Hydrophilic modification of polycarbonate surface with surface alkoxylation pretreatment for efficient separation of polycarbonate and polystyrene by froth flotation》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one)Recommanded Product: 931-40-8.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

SDS of cas: 931-40-8. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one, is researched, Molecular C4H6O4, CAS is 931-40-8, about Promotional effect of calcination temperature on structural evolution, basicity, and activity of oil palm empty fruit bunch derived catalyst for glycerol carbonate synthesis. Author is Okoye, Patrick U.; Wang, Song; Xu, Lanlan; Li, Sanxi; Wang, Jianye; Zhang, Linnan.

The synthesis of glycerol carbonate (GC) from glycerol and di-Me carbonate (DMC) catalyzed by oil palm empty fruit bunch ash (EFBA) was developed in this work. The catalyst was calcined at a temperature range of 300-600°C, and the effect of temperature was correlated with the catalyst structure-activity relationship, the total basicity, and basic strength. The catalyst characteristics were investigated by the N2-adsorption-desorption, Fourier transform IR, X-ray diffraction, XRD and Scanning electron microscope and energy dispersive spectroscopy, SEM/EDS. The results show that increasing calcination temperature propagates crystalline phase transition from KAlSiO4 to K2Mg(SiO4) by incorporating more K+ in the tetrahedral framework of SiO2 connected with Mg2+O4. Consequently, catalyst basic strength was enhanced and a significant amount of basic sites was generated with a corresponding increase in the GC yield. Also, the reaction temperature, initial DMC/glycerol molar ratio, catalyst dosage, and reaction time influence the yield of GC. Hence, 95.7% GC yield was achieved under 5 weight% catalyst concentration, 90°C, and initial DMC/glycerol molar ratio of 3:1 under 45 min reaction time. The catalyst sustained 85.2% GC yield after four times reuse, indicating relatively high stability without severe deactivation.

《Promotional effect of calcination temperature on structural evolution, basicity, and activity of oil palm empty fruit bunch derived catalyst for glycerol carbonate synthesis》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one)SDS of cas: 931-40-8.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Pradhan, Gitanjali; Sharma, Yogesh Chandra published the article 《Green synthesis of glycerol carbonate by transesterification of bio glycerol with dimethyl carbonate over Mg/ZnO: A highly efficient heterogeneous catalyst》. Keywords: magnesium zinc oxide catalytic dimethyl carbonate transesterification glycerol ester.They researched the compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one( cas:931-40-8 ).Quality Control of 4-(Hydroxymethyl)-1,3-dioxolan-2-one. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:931-40-8) here.

Glycerol carbonate is one of the trending value added chems. in biodiesel industry, which extensively used in pharmaceutical, cosmetic and food industries as well as green solvent in chem. industries. Depending upon the tremendous application of glycerol carbonate the synthesis of such compound from glycerol as byproduct of biodiesel is the main focus of the researchers now a days. Highly efficient heterogeneous Mg/ZnO base catalyst was designed through wet impregnation technique and used for transesterification of glycerol with di-Me carbonate to produce glycerol carbonate. The synthesized catalysts were characterized by XRD, SEM -EDX, FTIR, TGA-DSC, BET analyzer and XPS to find out the physicochem. properties of catalyst. The conversion and validation of glycerol carbonate synthesis was confirmed by 1H and 13C NMR spectroscopy and gas chromatog. also. It was observed at 80° the conversion of glycerol and GLC yield were to be obtained 98.4%, 96.57% resp. for the catalyst in 2 h time period. Finally, all the reaction parameters like temperature, molar ratio of DMC/Glycerol, catalyst loading, reaction time were optimized and the resp. effects were examined

Different reactions of this compound(4-(Hydroxymethyl)-1,3-dioxolan-2-one)Quality Control of 4-(Hydroxymethyl)-1,3-dioxolan-2-one require different conditions, so the reaction conditions are very important.

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

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.Esan, Akintomiwa Olumide; Adeyemi, Ayodele Dorcas; Ganesan, Shangeetha researched the compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one( cas:931-40-8 ).HPLC of Formula: 931-40-8.They published the article 《A review on the recent application of dimethyl carbonate in sustainable biodiesel production》 about this compound( cas:931-40-8 ) in Journal of Cleaner Production. Keywords: dimethyl carbonate sustainable biodiesel production review. We’ll tell you more about this compound (cas:931-40-8).

Major environmental concerns associated with climate change due to excessive carbon dioxide emissions have mandated the utilization of non-fossil fuels for a more sustainable environment. One of the widely recognized non-fossil fuel is biodiesel which has numerous advantages over fossil fuel. Major issues arising with biodiesel production is the expensive nature of the process which has hindered its sustainability. A suitable way of maximizing the economics of the production process is to avoid glycerol production which has become of low economic value due to its being over-surplus in the chem. industry market. The use of di-Me carbonate (DMC) makes this possible with the production of glycerol carbonate (GC) which ensures a profitable biodiesel production process. This review discusses the various ways in which DMC has been used in biodiesel production, starting from its usefulness in in-situ transesterification and extraction processes to its application in supercritical and non-supercritical transesterification processes. It also investigates the recent coupling transesterification reaction and glycerol carbonate production processes involving DMC. There is the need for a detailed technoeconomic anal. of DMC-biodiesel to validate its economic potential in terms of production cost as well as ascertaining the efficiency and quality of the DMC-biodiesel in diesel engines.

The article 《A review on the recent application of dimethyl carbonate in sustainable biodiesel production》 also mentions many details about this compound(931-40-8)HPLC of Formula: 931-40-8, you can pay attention to it, because details determine success or failure

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Reference of 4-(Hydroxymethyl)-1,3-dioxolan-2-one. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one, is researched, Molecular C4H6O4, CAS is 931-40-8, about Multiscale evaluation of CO2-derived cyclic carbonates to separate hydrocarbons: Drafting new competitive processes. Author is Hernandez, Elisa; Santiago, Ruben; Moya, Cristian; Navarro, Pablo; Palomar, Jose.

Current chem. technologies present a neg. impact on society and environment since they are based on processes that demand large energy and the use organic solvents, entailing relevant carbon footprint. Emerging solvents impose addnl. criteria in the design of new separation technologies. Aiming at addressing favorable solvent properties but also reducing emissions of carbon dioxide, cyclic carbonates are CO2-based synthesizable designer solvents unexplored in the literature. Cyclic carbonates are a new class of tunable compounds with ability to enhance current standards and improve the sustainability of processes. Here a comprehensive and systematic study, covering fundamental and process scale insights, is developed on the use of cyclic carbonates in the most relevant hydrocarbon separations in the literature, namely {n-heptane + toluene}, {cyclohexane + benzene} and {cyclohexane + cyclohexene} by liquid-liquid extraction and extractive distillation A priori COSMO-RS method described the driving interactions between cyclic carbonates and hydrocarbons, whereas COSMO-based/Aspen was used to further inspect phase equilibrium and design liquid-liquid extraction and extractive distillation separation processes, using benchmark industrial solvents (sulfolane and N-formylmorpholine). The favorable process performance starts a new research line to fine-tune cyclic carbonates’ structure, but currently drafting feasible approaches, competitive or even better when compared with conventional solvents.

The article 《Multiscale evaluation of CO2-derived cyclic carbonates to separate hydrocarbons: Drafting new competitive processes》 also mentions many details about this compound(931-40-8)Reference of 4-(Hydroxymethyl)-1,3-dioxolan-2-one, you can pay attention to it, because details determine success or failure

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare

Quality Control of 4-(Hydroxymethyl)-1,3-dioxolan-2-one. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 4-(Hydroxymethyl)-1,3-dioxolan-2-one, is researched, Molecular C4H6O4, CAS is 931-40-8, about Production of glycerol carbonate from glycerol over modified sodium-aluminate-doped calcium oxide catalysts. Author is Chotchuang, Araya; Kunsuk, Pawitra; Phanpitakkul, Amornpun; Chanklang, Sarun; Chareonpanich, Metta; Seubsai, Anusorn.

Glycerol is a low-cost coproduct from the biodiesel production process. Currently, production of value-added products from glycerol is still of great interest. This research studied the production of glycerol carbonate (GLC) from the transesterification reaction of glycerol and di-Me carbonate (DMC) using modified sodium aluminate catalysts. Sodium aluminate was modified with CaO to increase its basicity and glycerol was also used as a template during catalyst preparation to increase its surface area. The results showed that sodium aluminate modified with CaO at 5% by weight (NA5Ca) and using 45% glycerol template by weight of NA5Ca (NA5Ca-45 G) produced the most active catalyst among those prepared By varying the operational parameters, the maximum GLC yield of NA5Ca-45 G was 90.5% with 100% selectivity, a catalyst content of 30% by weight of glycerol reactant, a glycerol:DMC molar ratio of 1:4, a reaction temperature of 70°C, and a reaction time of 3 h. The study of catalyst reusability revealed that NA5Ca-45 G has problems with agglomeration and a small amount of leaching, which require further study for their prevention.

The article 《Production of glycerol carbonate from glycerol over modified sodium-aluminate-doped calcium oxide catalysts》 also mentions many details about this compound(931-40-8)Quality Control of 4-(Hydroxymethyl)-1,3-dioxolan-2-one, you can pay attention to it, because details determine success or failure

Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare