Tag: 200-300

Solvent-free, efficient synthesis of methyl phenyl carbonate over an SBA-15 loaded Pb-Bi bimetallic catalyst was written by Wang, Songlin;Jiang, Nan;Zhang, Qiying;Li, Huabo;Niu, Hongying;Chen, Tong;Wang, Gongying. And the article was included in Microporous and Mesoporous Materials in 2022.Computed Properties of C13H10O3 The following contents are mentioned in the article:

Me Ph carbonate (MPC) is one of the versatile carbonates; in particular, it is an important component in lithium-ion batteries. In recent years, the catalytic synthesis of MPC has become an important topic, but the development of highly active catalysts is still challenging. In this study, SBA-15-loaded nano-sized Pb-Bi catalysts with different Pb/Bi molar ratios were prepared by deposition-precipitation to improve the efficiency and selectivity. To investigate the relationship between the structure and performance of the catalysts, XRD, BET, SEM-EDS, HRTEM, H₂-TPR, and XPS characterization, as well as catalytic activity and stability tests, were conducted. Results revealed that Pb-Bi/SBA-15 can efficiently catalyze the synthesis of MPC under solvent-free conditions, with the highest catalytic activity obtained over 6 Pb-1Bi/SBA-15. SBA-15 with a large pore size and a high sp. surface area was suitable as catalyst carrier, and the average diameter of Pb-Bi oxide particles was ∼3.57 nm. The addition of Bi led to the improved dispersion of active components, which were highly and evenly dispersed on the SBA-15 surface. Furthermore, an appropriate proportion of Pb and Bi on SBA-15 was conducive to the considerable enhancement of the catalytic activity. Besides, Pb-Bi/SBA-15 also exhibited good durability and recyclability, making it a promising catalytic material for the synthesis of various carbonates. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Computed Properties of C13H10O3).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Computed Properties of C13H10O3

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

Enhancing efficacy and safety of azelaic acid via encapsulation in cyclodextrin nanosponges: development, characterization and evaluation was written by Kumar, Anil;Rao, Rekha. And the article was included in Polymer Bulletin (Heidelberg, Germany) in 2021.Reference of 102-09-0 The following contents are mentioned in the article:

Abstract: Azelaic acid (AA), a promising agent for acne and hyperpigmentation disorders, is associated with side effects viz. rashes, skin irritation, dryness, burning and stinging. Its poor solubility also pose challenge in the development of suitable formulation. Therefore, this research was aimed to design cyclodextrin nanosponges (CDNS) of AA to address above-mentioned challenges. Herein, the fabrication of CDNS by melt method was demonstrated employing β-cyclodextrin (β-CD) as polymer and di-Ph carbonate (DPC) as a cross-linker. AA was loaded in CDNS via lyophilization and appropriately characterized by Fourier transform IR spectroscopy, thermogravimetric anal., X-ray powder diffraction and NMR. For morphol. evaluation, field emission scanning electron and transmission electron microscopy were also performed. The particle size of AANS was in nanorange, with acceptable zeta potential, low polydispersity index and delayed release. The safety of the nanoformulation was assessed using Human Epidermal Keratinocyte cell lines. Further, mol. docking studies for AA was carried out. In vitro antibacterial, antioxidant and antityrosinase assay were also conducted for prepared nanoformulation. The results of all the studies performed revealed that encapsulation of AA in nanosponges led to improvement in efficacy of drug in terms of solubility, release and safety, with adequate antimicrobial, antioxidant and antityrosinase activity. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Reference of 102-09-0).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Reference of 102-09-0

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

A smart porous wood-supported flower-like NiS/Ni conjunction with vitrimer co-effect as a multifunctional material with reshaping, shape-memory, and self-healing properties for applications in high-performance supercapacitors, catalysts, and sensors was written by Xiong, Chuanyin;Li, Bingbing;Liu, Heguang;Zhao, Wei;Duan, Chao;Wu, Haiwei;Ni, Yonghao. And the article was included in Journal of Materials Chemistry A in 2020.Application In Synthesis of Diphenyl carbonate The following contents are mentioned in the article:

Wood-based materials are attracting extensive attention for applications in energy storage due to their environmental friendliness and the presence of numerous channels in their structure. However, the poor conductivity and flexibility of wood restrict its application. Although some researchers have made several efforts to improve the conductivity of wood by carbonization, the wood-based materials become brittle instead of flexible. Moreover, the cycling stability of carbonized wood-based materials becomes very poor due to their falling off during the process of electrochem. energy storage. Herein, for the first time, a smart carbonized lignin-free wood (CLFW)@Ni-NiS/vitrimer(V) composite multifunctional material with good reshaping, shape-memory, and self-healing properties was designed and fabricated. When assembled to a sym. supercapacitor, the resultant CLFW@Ni-NiS/V hybrid showed not only the high gravimetric, areal, and volumetric energy densities of 38 W h kg-1, 687μW h cm-2, and 58 W h L-1 and simultaneously maintained the high power densities of 56 kW kg-1, 202 mW cm-2, and 39 kW L-1, but also significantly enhanced cycling stability, resp. In addition, CLFW@Ni-NiS/V presented good ORR and strain sensor properties. These outstanding advantages highlight the huge potential of smart wood-based materials with variable, shape-memory, and self-healing properties for applications in supercapacitors, catalysts, and sensors. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application In Synthesis of Diphenyl carbonate).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Application In Synthesis of Diphenyl carbonate

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

Microwave assisted synthesis and spectroscopic characterisation of diphenyl carbonate functionalised nanoporous starch was written by Swain, Yajnadutta;Badamali, Sushanta Kumar. And the article was included in Journal of Polymer Research in 2020.Application of 102-09-0 The following contents are mentioned in the article:

The functionalisation of potato starch using a greener and biol. important mol., i.e., di-Ph carbonate under microwave irradiation to obtain nanoporous di-Ph carbonate/starch composites is demonstrated. A series of spectroscopic techniques were used to investigate the bonding between di-Ph carbonate and starch, along with morphol. and nature of modified starch. The regular surface of pristine starch was noticeably modified to a porous structure as evidenced by FESEM and TEM. Both ¹H and ¹³C NMR studies revealed that the features of di-Ph carbonate were retained in modified starch. The line widths of ¹³C NMR signals were enhanced by 190 – 360 Hz referring to the crystalline nature of the modified form. FT IR studies showed bands at 1641 and 1774 cm^-1 which confirms the linkage of di-Ph carbonate with starch. FT IR studies supported a substantial removal of hydrogen bonding from the native starch surface after phenylation, referring to hydrophobic nature of modified starch. The shift of band position from 867 to 854 cm ^– 1 in Raman studies is attributed to the C-C-H or C-O-C bending linkage of carbon to di-Ph carbonate. The X-ray diffraction and thermogravimetric studies further supported the rigid and porous structure of modified starch. These modified starch possessing open structures is envisaged to act as a host materials for adsorption of hydropbobic mols. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application of 102-09-0).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Application of 102-09-0

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

Mass spectra of lepidopterous sex pheromones with a conjugated diene system was written by Ando, Tetsu;Ogura, Yasushi;Uchiyama, Masaaki. And the article was included in Agricultural and Biological Chemistry in 1988.Name: (E)-Dodeca-9,11-dien-1-yl acetate The following contents are mentioned in the article:

Dodecadien-1-ols, tetradecadien-1-ols, and hexadecadien-1-ols with a conjugated (E,E)- or (E)-diene system between the ω1,ω3- and ω5,ω7-positions, their acetates, and aldehyde derivatives (lepidopterous sex pheromones and candidates) were analyzed by electron-impact mass spectrometry, which was operated at 70-eV ionization voltage. Three functional derivatives with a same diene system presented a similar spectral pattern, except for the mol. ions (M⁺), [M-H₂O]⁺ of the alcs., and [M-CH₃CO₂H]⁺ of the acetates. Each isomer showed a characteristic fragment ion series of C_nH_2n-2⁺ ∼C_nH_2n-5⁺ (C₄∼C₉), which reflected the double-bond position in the mol., indicating a method for determining the position of a natural diene pheromone by comparing its mass spectrum with those of the synthetic dienes. By this method, the natural pheromone of Hellula undalis was confirmed to be a ω3,ω5-diene. Furthermore, the fitness indexes proposed by Y. Kuwahara et al. (1986) were calculated for some pheromone components, using the mass spectra of synthetic dienes, to examine the possibilities and limitations for applications of those mass spectra to natural pheromone studies. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Name: (E)-Dodeca-9,11-dien-1-yl acetate).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Name: (E)-Dodeca-9,11-dien-1-yl acetate

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

Electrochemical study of functional additives for Li-ion batteries was written by Khodr, Zaynab;Mallet, Charlotte;Daigle, Jean-Christophe;Feng, Zimin;Amouzegar, Kamyab;Claverie, Jerome;Zaghib, Karim. And the article was included in Journal of the Electrochemical Society in 2020.Category: esters-buliding-blocks The following contents are mentioned in the article:

In the battery industry, the performance of lithium-ion batteries operating at a high voltage is enhanced by utilizing functional additives in electrolytes to achieve higher energy densities and longer lifetimes. These additives chem. stabilize the electrolyte and aid in the formation of a stable cathode electrolyte interphase (CEI). In this paper, the investigation of oxidative potentials of more than 100 additives, using d. functional theory calculations to determine the best candidates for CEI formation, is reported. The method was validated by comparing the calculated oxidation potentials and the exptl. data obtained using linear sweep voltammetry based on the evaluation of 18 candidates. Further electrochem. studies (AC impedance and cycling stability) on six selected additives were conducted. Among the tested additives, the addition of quinacridone at 0.03% weight concentration resulted in the formation of a less resistive surface film on the cathode in Li/Ni_0.5Mn_0.3Co_0.2O₂ coin cells. Moreover, the capacity retention in Gr/Ni_0.5Mn_0.3Co_0.2O coin cells increased from 62% to 77% after 200 cycles at 1C and approx. 4.4 V. The derived results suggest that the combination of the oxidation potential prediction with impedance study could be used as a powerful tool to properly and efficiently select CEI-forming additive candidates for improved battery performance. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Category: esters-buliding-blocks).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Category: esters-buliding-blocks

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

Copolymers of methyl methacrylate and fluoroalkyl methacrylates: effects of fluoroalkyl groups on the thermal and optical properties of the copolymers was written by Zhou, Dingying;Teng, Hongxiang;Koike, Koutarou;Koike, Yasuhiro;Okamoto, Yoshiyuki. And the article was included in Journal of Polymer Science, Part A: Polymer Chemistry in 2008.Application In Synthesis of 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate The following contents are mentioned in the article:

Fluoroalkyl methacrylates, 2,2,2-trifluoroethyl methacrylate (1), hexafluoroisopropyl methacrylate (2), 1,1,1,3,3,3-hexafluoro-2-methyl-2-Pr methacrylate (3), and perfluoro t-Bu methacrylate (4) were synthesized. Homopolymers and copolymers of these fluoroalkyl methacrylates with Me methacrylate (MMA) were prepared and characterized. With the exception of the copolymers of MMA and 2,2,2-trifluoroethyl methacrylate (1), the glass transition temperatures (T_gs) of the copolymers were found to deviate pos. from the Gordon-Taylor equation. The pos. deviation from the Gordon-Taylor equation could be accounted for by the dipole-dipole intrachain interaction between the Me ester group and the fluoroalkyl ester group of the monomer units. These T_g values of the copolymers were found to fit with the Schneider equation. The fitting parameters in the Schneider equation were calculated, and R² values, the coefficients of determination, were almost 1.0. The refractive indexes of the copolymers, measured at 532, 633, and 839 nm wavelengths, were lower than that of PMMA and showed a linear relationship with monomer composition in the copolymers. 2 And MMA have a tendency to polymerize in an alternating uniform monomer composition, resulting in less light scattering. This result suggests that the copolymer prepared with an equal molar ratio of 2 and MMA may have useful properties with applications in optical devices. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Application In Synthesis of 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate).

1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Application In Synthesis of 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate

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

Curie-point pyrolysis-gas chromatography-mass spectroscopic analysis of theabrownins from fermented Zijuan tea was written by Gong, Jiashun;Zhang, Qin;Peng, Chunxiu;Fan, Jiangpin;Dong, Wenming. And the article was included in Journal of Analytical and Applied Pyrolysis in 2012.SDS of cas: 88530-52-3 The following contents are mentioned in the article:

Zijuan tea theabrownins (ZTTBs) was extracted from a type of fermented Zijuan tea and separated into fractions according to mol. weight The extract was found to contain predominantly two fractions: <3.5 kDa and >100 kDa. These two fractions were analyzed for chem. composition, structural characteristics by Curie-point pyrolysis-gas chromatog.-mass spectroscopy (CP-Py-GC/MS). The affects of pyrolysis temperature on pyrolytic products were also investigated. The fraction >100 kDa produced 50 GC/MS peaks during pyrolysis at 280 °C, 70 peaks at 386 °C, and 134 peaks at 485 °C. Fourteen of the products formed at 280 °C, 12 of those formed at 386 °C, and 21 of those formed at 485 °C were identified with match qualities of greater than 80%. The fraction <3.5 kDa gave 51 peaks during pyrolysis at 280 °C, 99 peaks at 386 °C, and 257 peaks at 485 °C. Six products formed at 280 °C, four products formed at 386 °C, and 61 products formed at 485 °C were identified with match qualities of greater than 80%. Pyrolysis temperatures of 485 °C and 386 °C were found suitable for the two fractions resp. CP-Py-GC/MS revealed that, the fraction >100 kDa mainly consisted of phenolic pigments, esters, proteins, and polysaccharides, while the fraction <3.5 kDa contained no polysaccharide. CP-Py-GC/MS is an effective tool for the composition difference and structural characteristics of ZTTBs as well as other complex macromol. plant pigments. This study involved multiple reactions and reactants, such as Methyl 2-(4-(tert-butyl)phenoxy)acetate (cas: 88530-52-3SDS of cas: 88530-52-3).

Methyl 2-(4-(tert-butyl)phenoxy)acetate (cas: 88530-52-3) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.SDS of cas: 88530-52-3

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

Stir bar sorptive extraction and automatic two-stage thermal desorption-gas chromatography-mass spectrometry for trace analysis of the byproducts from diphenyl carbonate synthesis was written by Liu, Tao;Yuan, Xiaoxue;Zhang, Gang;Hu, Jing;An, Jing;Chen, Tong;Wang, Gongying. And the article was included in Microchemical Journal in 2020.Recommanded Product: 102-09-0 The following contents are mentioned in the article:

In this study, a fast and sensitive method based on stir bar sorptive extraction (SBSE) and two-step thermal desorption coupled with online gas chromatog.-mass spectrometry was established to simultaneously analyze six trace byproducts [phenyl salicylate (PS), xanthone (XA), Me o-hydroxybenzoate (MS), 2-Me di-Ph carbonate (PTC), Me o-methoxybenzoate (MSME) and Ph o-methoxybenzoate (PSME)] generated in the process of di-Ph carbonate (DPC) synthesis. Under the optimal conditions, the six byproducts generated in the synthesis of DPC via transesterification were quant. analyzed by external standard method. The results showed that, within the range of 1.0-100 ng/L for all of the six transesterification byproducts, this method revealed good linearity with correlation coefficients (r) ≥0.997. The limits of detection (LODs) were between 0.054 ng/L and 0.253 ng/L, the relative standard deviations (RSD) were from 5.2% to 11.5%, and the recoveries were 81.6%-102.6% (n = 3). The method is simple, rapid and has a wide linear range, high accuracy, and sensitivity, as well as good stability. It is suitable for simultaneous, rapid and selective anal. of six trace byproducts in the process of DPC synthesis. It can also provide vigorous data support and industrialization guidance for the selection of transesterification conditions and research on the formation mechanisms, distribution regularity, and even control of transesterification byproducts. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Recommanded Product: 102-09-0).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Recommanded Product: 102-09-0

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

High pressure NMR studies of confined liquids was written by Jonas, J.;Zhang, Jing;Xu, Shu. And the article was included in Materials Research Society Symposium Proceedings in 1993.Related Products of 5444-75-7 The following contents are mentioned in the article:

The main goal of the novel NMR experiments on confined liquids was to determine the effects of pressure on the dynamics of liquids in the surface layer by using the 2-state, fast exchange model and to compare them to the pressure effects observed for bulk liquids With this goal in mind, the deuteron NMR spin-lattice relaxation times (T₁) in liquid pyridine-d₅, PhNO₂-d₅, and methylcyclohexane-d₁₄ confined to sol-gel porous silica glasses with pore radii at from 18 Å to 96 Å were measured as a function of pressure ≤ 5 kbar at 300 K. In another set of high resolution natural abundance ¹³C NMR experiments, the ¹³C relaxation behavior of each carbon in 2-ethylhexyl benzoate model lubricant was measured as a function of pressure in porous silica glasses. In fact, this exptl. approach (which allows study of the effects of pressure on the dynamic behavior of surface-layer liquids) may provide a new tool in studies of model liquid lubricants at extreme conditions of pressure and temperature In addition, selected results of a recent study of MeCN-d₃ are reviewed. The ²H and ¹⁴N spin-lattice relaxation times of MeCN-d₃ in porous silica glasses were measured to study the confinement effects on the anisotropic reorientation characterized by rotational diffusion consts, D_⊥ and D_‖, of this sym.-top mol. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Related Products of 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Related Products of 5444-75-7

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