Tag: M.W=200-250

Xu, Qiang published the artcileAbsorption of sulfur dioxide by tetraglyme-sodium salt ionic liquid, Product Details of C10H22O5, the main research area is sulfur dioxide absorption tetraglyme sodium salt ionic liquid; SO2 removal; ionic liquid; recyclable absorption; tetraglyme.

A series of tetraglyme-sodium salt ionic liquids have been prepared and found to be promising solvents to absorb SO2. The experiments here show that [Na-tetraglyme][SCN] ionic liquid has excellent thermal stability and a 30% increase in SO2 absorption capacity compared to other sodium salt ionic liquids and the previously studied lithium salt ionic liquids in terms of molar absorption capacity. The interaction between SO2 and the ionic liquid was concluded to be phys. absorption by IR and NMR.

Molecules published new progress about Absorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Product Details of C10H22O5.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Semenycheva, Lyudmila published the artcileFeatures of Polymerization of Methyl Methacrylate using a Photocatalyst-the Complex Oxide RbTe1.5W0.5O6, Quality Control of 143-24-8, the main research area is rubidium tungsten tellurate photocatalyst methyl methacrylate polymerization.

Radical polymerization of Me methacrylate in an aqueous emulsion was carried out using the complex oxide RbTe1.5W0.5O6 as a photoinitiator under visible light irradiation with λ = 400-700 nm. Study of the polymerization process and reaction products using methods of phys. and chem. anal. (GPC, IR, NMR, etc.) has shown that there are several directions of monomer transformations at the same time. Polymethyl methacrylate with Mn ∼ 140-145 kDa, produced in the organic phase, is a result of polymerization initiation by a hydroxyl radical formed due to complex transformations of electron-hole pairs during photocatalyst irradiation Moreover, the interaction of the hydroxyl radical with OH-groups on the complex oxide RbTe1.5W0.5O6 surface and the subsequent formation of oxygen-centered radicals lead to grafting polymer macromols. on the photocatalyst surface. In addition, Me methacrylate is able to oxidize to a cyclic dimer with terminal double bonds and form a polymer with cyclic dimer links due to coordination by double bonds on the RbTe1.5W0.5O6 surface. The high activity of the hydroxyl radical allows to obtain the graft copolymer PMMA-pectin by grafting the polymer product on the surface of the natural polymer-pectin. Comparison of the sponge morphol. of the graft copolymer PMMA-pectin and the initial pectin samples using the SEM has shown a noticeable difference in their structural and topol. organization. It is especially interesting in terms of studying the properties of the graft copolymer as a material for the scaffolds.

Journal of Inorganic and Organometallic Polymers and Materials published new progress about Absorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Quality Control of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Xie, Heping published the artcileLow-energy-consumption electrochemical CO2 capture driven by biomimetic phenazine derivatives redox medium, Recommanded Product: 2,5,8,11-Tetraoxatridecan-13-ol, the main research area is carbon dioxide proton coupled electron transfer electrolysis redox reaction.

To reduce the energy consumption of CO2-capture methods, proton carriers can be used to drive the CO2 capture in a pH-swing way via the proton coupled electron transfer (PCET) reactions, which are electrochem. regenerable by electrolysis, surpassing the energy-intensive thermal regeneration of traditional monoethanolamine (MEA) absorption method in terms of energy efficiency. However, the low solubility of PCET organics limits its CO2 capture capacity and thus the application. We develop a low energy consuming, high-capacity CO2-capture cell using a phenazine-based organic as the proton carrier as the PCET redox medium, which has high proton capacity and fast PCET kinetics. The quasi-reversible redox-PCET of the phenazine derivative effectively swings the pH of NaHCO3/Na2CO3 aqueous electrolyte at the cathode and the anode, which work as the CO2 absorption/desorption half-cell resp. This electrochem. CO2-capture cell with an optimal derivative (7,8-dihydroxyphenazine-2-sulfonic acid, noted as DHPS) demonstrates a 95.8% average current efficiency at 10 mA cm-2 and a superior low-electrolysis energy consumption of 0.49 GJ per ton of CO2.

Applied Energy published new progress about Absorption. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Recommanded Product: 2,5,8,11-Tetraoxatridecan-13-ol.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Li, Yun published the artcileSolubility Measurement and Thermodynamic Properties Calculation for Several CO2 + Ether Absorbent Systems, HPLC of Formula: 143-24-8, the main research area is solubility thermodn property carbon dioxide ether absorbent system.

Six phys. absorbents with the ether groups were selected for CO2 absorption: tetraethylene glycol di-Me ether (TEGDME), diethylene glycol monohexyl ether, 2-butoxyethyl ether, triethylene glycol monobutyl ether, ethylene glycol di-Bu ether, and dipropylene glycol di-Me ether (DPGDME). CO2 solubilities in these absorbents were measured at 273.15 and 283.15 K and 0-1.2 MPa. Henry’s constants of these CO2 + ether absorbent systems were calculated and analyzed at 273.15 K. The ether group is found more powerful than the methylene group, and the Et group is more effective than the hydroxyl group to improve the absorption ability of the absorbents. A lower temperature tends to facilitate the absorption process by increasing the absorption ability. Henry’s constants and mass solubilities of the ether absorbents were compared with those of the ionic liquids, common solvents, and other absorbents. TEGDME and DPGDME are potential absorbents according to the evaluation in both mole and mass fraction. The thermodn. properties, such as entropy, enthalpy, and Gibbs free energy of solution, for CO2 + the ether absorbent systems were calculated and discussed for potential development of corresponding CO2 capture processes.

Journal of Chemical & Engineering Data published new progress about Absorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, HPLC of Formula: 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Tang, Ming published the artcileCobalt-decorated carbon nanofibers as a low overpotential cathode for nonaqueous Na-CO2 batteries, Computed Properties of 143-24-8, the main research area is carbon dioxide nanofiber overpotential cathode polarization nonaqueous battery.

As the high energy-d. energy storage and greenhouse gas capture device, Na-CO2 battery development is impeded by the sluggish CO2 reduction and difficult decomposition of insulating discharge products on the cathode. Here, the cobalt (Co)-decorated carbon nanofibers accompanying with slight Co oxidation were used as the self-standing cathode for Na-CO2 battery. It greatly reduces the discharge overpotential by 500 mV and charge overpotential by 210 mV, delivers a 12 times higher discharge capacity and runs nearly 4 times cycle life than its counterpart. Experiment combined with theory calculation demonstrates that the evenly dispersive, abundant and stable active sites (Co-CoO) with an equal CO2 adsorption-desorption capability is the key to improving cell performance. This work reveals the importance of catalysts/cathodes and provides a direction to design highly efficient catalysts/cathodes for alkali metal-CO2 batteries.

Journal of Alloys and Compounds published new progress about Adsorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Computed Properties of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Jia, Shuangzhu published the artcilePreparation and pore-forming mechanism of hydrogen bond and ionic bond double-driven chitosan-based mesoporous carbon, COA of Formula: C10H22O5, the main research area is chitosan based mesoporous carbon preparation hydrogen ionic bond adsorption; Chitosan; Hydrogen bond and ionic bond; Mesoporous carbon; Sol-hydrothermal method; Synergistic preparation; Tannic acid.

Using chitosan as the carbon source, F127 as the template, and sodium tripolyphosphate as crosslinking agent, a hydrogen bond and ionic bond double-driven mesoporous carbon material was prepared via the sol-hydrothermal method and its formation mechanism was discussed. According to the results from FTIR, Raman, XPS, phys. adsorption analyzer, SEM, TEM, and TG-IR, the mesoporous carbon material was formed under the synergistic effect of hydrogen bond and ionic bond has a mesoporous volume of 0.44 cm3/g, a BET surface area of 262 m2/g, and possesses the ideal unimodal distribution around 2.20 nm. The mesopores are originated from the degradation of hydrophobic segment PPO of F127, and the micropores come from the gases CO2, CO, NH3, CH4, tetraethylene glycol di-Me ether, and 2,6-diisopropylphenyl isocyanate produced during the degradation of prepolymers. The maximum adsorption capacity of this mesoporous carbon for tannic acid (Sips model) at 30 °C is 70.4 mg/g.

International Journal of Biological Macromolecules published new progress about Adsorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, COA of Formula: C10H22O5.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Liu, Limin published the artcileRational Design of Nanostructured Metal/C Interface in 3D Self-Supporting Cellulose Carbon Aerogel Facilitating High-Performance Li-CO2 Batteries, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium carbon dioxide batterry cellulose aerogel nanostructure.

The sluggish kinetics of CO2 reduction and evolution reaction (CRR and CER) on the Li-CO2 battery cathode seriously hindered its practical application. Rational design of the Ru/C interface is expected to simultaneously decrease the free energy barrier of intermediate species and create a favorable electronic structure, effectively promoting the catalytic reaction kinetics of the CRR and CER. Herein, a 3D self-supporting cellulose carbon aerogel (CCA) with well-defined Ru/C interfaces (Ru@CCA) is synthesized as an advanced CO2-breathing cathode for Li-CO2 batteries. The results show that the energy efficiency significantly improves to 80% with a high discharge capacity of 10.71 mA h cm-2 at 20μA cm-2, and excellent cyclic stability of 421 cycles at 100μA cm-2. These outstanding performances are highly competitive compared with state-of-art Li-CO2 cathodes. In addition, the unique interface design strategy is applied to other non-noble metal@CCA cathodes, which confirms the advantages of constructing nanostructure metal/C interfaces for improving the kinetics of CRR and CER. This fundamental understanding of the structure-performance relationship provides new inspiration for designing highly efficient cathode catalysts for Li-CO2 batteries.

Advanced Energy Materials published new progress about Adsorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Application of 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Tashika, Yoshio published the artcileSynthesis and properties of 1,1′-dithiodiformamidine hydrohalide, Related Products of ethers-buliding-blocks, the publication is Yakugaku Zasshi (1961), 1519-22, database is CAplus and MEDLINE.

A solution of 23 g. (H₂N)₂CS, 200 mL. H₂O, 40 mL. 95% EtOH, and 460 mL. 2N HCl, while cooling, treated dropwise with 74 mL. 50% EtOH containing 3 mol H₂O₂ at 5°, 900 mL. Et₂O added, and the mixture kept overnight at 0° gave 30 g. 1,1′-dithiodiformamidine (I): 2HX (X = Cl), m. 181°; picrate m. 154°. Similarly were prepared I (oxidizing agent, reaction medium, X in I, m.p., and m.p. of picrate given): SO₂Cl₂, absolute EtOH, Cl, 180°, 154°; p-MeC₆H₄SO₂Cl, Me₂CO, Cl, 180°, 153°; H₂O₂, 3N HBr, Br, 195-6°, 154.5°; Br, absolute EtOH, Br, 195-6°, 165°; Br, CHCl₃, addition product, 182°, 164°; iodine, H₂O, iodine, 78°, 154°; iodine, C₆H₆, addition product, 89°, 154°; H₂O₂, 3N HI, iodine, 82°, 154°. I (X = Cl) was the most stable and I (X = iodine) the most labile, liberating iodine. I was soluble in H₂O but not in organic solvents. Addition of organic solvent to the solution of I (X = iodine) immediately started liberation of iodine.

Yakugaku Zasshi published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C39H35N5O8, Related Products of ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Walker, James B. published the artcileFurther studies on the mechanism of transamidinase action: transamidination in Streptomyces griseus, Recommanded Product: Formamidine disulfide dihydrochloride, the publication is Journal of Biological Chemistry (1958), 1-9, database is CAplus.

cf. C.A. 51, 8169d. In contrast to mammalian kidney transamidinase, that of S. griseus does not react with glycine. Like the kidney transamidinase, it catalyzes reversible arginine-ornithine and canavanine-ornithine transamidinations. The concept of an enzyme-amidine intermediate in transamidination reactions is supported by (a) the occurrence of the arginine-ornithine exchange reaction, coupled with specificity considerations, and (b) the fact that the formamidine moiety of the intermediate can be trapped with HONH₂ to form hydroxyguanidine. Formamidine disulfide is a potent inhibitor of transamidinase. It is suggested that its inhibitory action results from the formation of a mixed disulfide with an essential sulfhydryl group on the enzyme. A sensitive colorimetric assay for hydroxyguanidine is described.

Journal of Biological Chemistry published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C11H19N, Recommanded Product: Formamidine disulfide dihydrochloride.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Wheatley, P. J. published the artcileCrystallography of some cyanine dyes, Product Details of C2H8Cl2N4S2, the publication is Journal of the Chemical Society (1959), 3245-50, database is CAplus.

The cell constants and space groups of some cyanine dyes and their solvates were determined The structure of the unsolvated dye 3,3′-diethylthiacarbocyanine bromide was elucidated from 2 projections. The cation is planar with the conjugated chain in the extended form. The S atoms are cis with respect to this chain. Some curious properties of the crystals are described. The results of the structure determination are correlated with other properties of cyanine dyes.

Journal of the Chemical Society published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C8H10O2, Product Details of C2H8Cl2N4S2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem