Month: November 2022

Zebarjad, Fatemeh Sadat published the artcileExperimental Investigation of the Application of Ionic Liquids to Methanol Synthesis in Membrane Reactors, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is ionic liquid methanol membrane reactor.

In this study, a high-pressure membrane reactor (MR) was employed to carry out the methanol synthesis (MeS) reaction. Syngas was fed into the MR shell side where a com. MeS catalyst was used, while the tube side was swept with a high b.p. liquid with good solubility toward methanol. A mesoporous alumina ceramic membrane was utilized after its surface had been modified to be rendered more hydrophobic. The efficiency of the MR was investigated under a variety of exptl. conditions (different pressures, temperatures, sweep liquid flow rates, and types of sweep liquids). The results reveal improved per single-pass carbon conversions when compared to the conventional packed-bed reactor. An ionic liquid (IL), 1-ethyl-3-methylimidazolium tetrafluoroborate, was utilized in the MR as the sweep liquid The exptl. results are compared to those previously reported by our group (Li, Z.; Tsotsis, T. T. J. Membrane Sci. 2019, 570, 103) while using a conventional petroleum-derived solvent as sweep liquid, tetraethylene glycol di-Me ether (TGDE). Enhanced carbon conversion (over the petroleum-derived solvent) was obtained using the IL.

Industrial & Engineering Chemistry Research published new progress about Ceramic membranes. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Name: 2,5,8,11,14-Pentaoxapentadecane.

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

Claffey, Michelle M. published the artcileApplication of Structure-Based Drug Design and Parallel Chemistry to Identify Selective, Brain Penetrant, In Vivo Active Phosphodiesterase 9A Inhibitors, Recommanded Product: 3-Phenoxyazetidine hydrochloride, the main research area is structure preparation phosphodiesterase 9A inhibitor brain penetration Alzheimer’s t.

Phosphodiesterase 9A inhibitors have shown activity in preclin. models of cognition with potential application as novel therapies for treating Alzheimer’s disease. Our clin. candidate, PF-04447943 (2), demonstrated acceptable CNS permeability in rats with modest asymmetry between central and peripheral compartments (free brain/free plasma = 0.32; CSF/free plasma = 0.19) yet had physicochem. properties outside the range associated with traditional CNS drugs. To address the potential risk of restricted CNS penetration with 2 in human clin. trials, we sought to identify a preclin. candidate with no asymmetry in rat brain penetration and that could advance into development. Merging the medicinal chem. strategies of structure-based design with parallel chem., a novel series of PDE9A inhibitors was identified that showed improved selectivity over PDE1C. Optimization afforded preclin. candidate 19 that demonstrated free brain/free plasma ≥1 in rat and reduced microsomal clearance along with the ability to increase cyclic guanosine monophosphosphate levels in rat CSF.

Journal of Medicinal Chemistry published new progress about Alzheimer disease. 301335-39-7 belongs to class ethers-buliding-blocks, name is 3-Phenoxyazetidine hydrochloride, and the molecular formula is C9H12ClNO, Recommanded Product: 3-Phenoxyazetidine hydrochloride.

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

Yu, Xueqing published the artcileSub-Nanometer Pt Clusters on Defective NiFe LDH Nanosheets as Trifunctional Electrocatalysts for Water Splitting and Rechargeable Hybrid Sodium-Air Batteries, COA of Formula: C10H22O5, the main research area is platinum cluster nickel iron layered double hydroxide nanosheet electrocatalyst; water splitting electrocatalyst layered double hydroxide nanosheet; cation vacancies; hybrid Na−air battery; layered double hydroxide; sub-nm Pt; water splitting.

It is challenging to develop highly efficient and stable multifunctional electrocatalysts for improving the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and the oxygen reduction reaction (ORR) for sustainable energy conversion and storage systems such as water-alkali electrolyzers (WAEs) and hybrid sodium-air batteries (HSABs). In this work, sub-nm Pt nanoclusters (NCs) on defective NiFe layered double hydroxide nanosheets (NixFe LDHs) are synthesized by a facile electrodeposition method. Due to the synergistic effect between Pt NCs and abundant at. M(II) defects, along with hierarchical porous nanostructures, the Pt/NixFe LDHs catalysts exhibit superior trifunctional electrocatalytic activity and durability toward the HER/OER/ORR. A WAE fabricated with Pt/NixFe LDHs electrodes needs 1.47 V to reach a c.d. of 10 mA cm-2, much lower than that of the mixed 20% Pt/C and 20% Ir/C catalysts. An HSAB assembled by Pt/NixFe LDHs as a binder-free air cathode displays a high open-circuit voltage, a narrow overpotential gap, and remarkable recharge-ability. This work provides a feasible strategy for constructing freestanding efficient trifunctional electrocatalysts for sustainable energy conversion and storage systems.

ACS Applied Materials & Interfaces published new progress about Adsorption energy. 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

Wang, Jiaqi published the artcileRoom-Temperature Flexible Quasi-Solid-State Rechargeable Na-O2 Batteries, HPLC of Formula: 143-24-8, the main research area is flexible sodium oxygen battery solid state polymer electrolyte nanocomposite.

Rechargeable Na-O2 batteries have been regarded as promising energy storage devices because of their high energy d., ultralow overpotential, and abundant resources. Unfortunately, conventional Na-O2 batteries with a liquid electrolyte often suffer from severe dendrite growth, electrolyte leakage, and potential H2O contamination toward the Na metal anode. Here, we report a quasi-solid-state polymer electrolyte (QPE) composed of poly(vinylidene fluoride-co-hexafluoropropylene)-4% SiO2-NaClO4-tetraethylene glycol di-Me ether for rechargeable Na-O2 batteries with high performance. D. functional theory calculations reveal that the fluorocarbon chains of QPE are beneficial for Na+ transfer, resulting in a high ionic conductivity of 1.0 mS cm-1. Finite element method simulations show that the unique nanopore structure and high dielec. constant of QPE can induce a uniform distribution of the elec. field during charge/discharge processes, thus achieving a homogeneous deposition of Na without dendrites. Moreover, the nonthrough nanopore structure and hydrophobic behavior resulting from fluorocarbon chains of QPE could effectively protect Na anode from H2O erosion. Therefore, the fabricated quasi-solid-state Na-O2 batteries exhibit an average Coulombic efficiency of up to 97% and negligible voltage decay during 80 cycles at a discharge capacity of 1000 mAh g-1. As a proof of concept, flexible pouch-type Na-O2 batteries were assembled, displaying stable electrochem. performance for ~400 h after being bent from 0 to 360°. This work demonstrates the application of the quasi-solid-state electrolyte for high-performance flexible Na-O2 batteries. On the basis of a quasi-solid-state electrolyte, flexible Na-O2 batteries with high electrochem. performance are achieved for broad applications.

ACS Central Science published new progress about Adsorption energy. 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

Li, Zhenyu published the artcilePdCoNi alloy nanoparticles decorated, nitrogen-doped carbon nanotubes for highly active and durable oxygen reduction electrocatalysis, Quality Control of 143-24-8, the main research area is alloy PdCoNi nitrogen doped carbon nanotube oxygen reduction electrocatalyst.

Alloying Pd with transition metals is an effective strategy to enhance its catalytic activity toward oxygen reduction reaction (ORR). However, these catalysts always suffer from poor durability due to metal leaching during ORR. Herein, the catalyst of PdCoNi alloy nanoparticles supported on nitrogen-doped carbon nanotubes (PdCoNi/NCNTs) is prepared via one-pot solvothermal method and subsequent calcination. Introducing Co and Ni into Pd lattice not only boosts the catalytic activity, but also promotes the stability of the catalyst. As a result, the PdCoNi/NCNTs catalyst achieves a half-wave potential of 0.907 V and a specific activity of 3.78 mA/cm2 at 0.9 V vs. RHE, with 10 mV pos. shift and 17.2 times enhancement over the com. Pt/C catalyst in alk. solution Meanwhile, PdCoNi/NCNTs show much improved durability, with only 5 mV shift in the half-wave potential after 10,000 cycles, remarkably superior to those of PdCo/NCNTs, PdNi/NCNTs, and Pd/NCNTs. Valence band photoemission spectral anal. and theor. calculations indicate that the existence of Co and Ni can tune the electronic structure of Pd by compressive strain effect and coordination effect, facilitating the activation of O2 and stabilizing the alloy elements, thus delivering a desired ORR activity and stability. Meanwhile, the high stability and intrinsic catalytic activity of NCNTs is also beneficial to ORR. Furthermore, PdCoNi/NCNTs also exhibit high performance as the air cathode catalysts in lithium-air battery.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Adsorption energy. 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

Feng, Ningning published the artcileMechanism-of-Action Elucidation of Reversible Li-CO2 Batteries Using the Water-in-Salt Electrolyte, Synthetic Route of 143-24-8, the main research area is lithium carbon dioxide battery CNT cathode water salt electrolyte; CO2-to-Li2C2O4 conversion; Li2CO3; Li−CO2 batteries; electrochemistry mechanism; water-in-salt.

Li-CO2 batteries have attracted worldwide attention because of their dual characteristics of high energy d. and effective CO2 capture. However, the basic electrochem. mechanism involved has been unclear, which is mainly confused by the complicated decomposition of organic electrolytes. Herein, water-in-salt (WIS, LiTFSI/H2O 21.0 mol/1 kg) has been explored as a suitable electrolyte for the first time to investigate the reaction mechanism of Li-CO2 batteries with different cathodes (carbon nanotube (CNT) and Mo2C/CNT, resp.). An Mo2C-based Li-CO2 battery with WIS delivers a higher energy efficiency of 83% and a superior cyclability, compared to those of the CNT-based counterpart cell. Through various ex/in situ qual./quant. characterizations, the Mo2C-based Li-CO2 battery with WIS can operate on the reversible conversion of CO2-to-Li2C2O4 ((e-/CO2)ideal = 1) at lower discharge/charge overpotentials, while the CNT-based counterpart cell is based on the formation/decomposition of Li2CO3 ((e-/CO2)ideal ≈ 1.33) at high overpotentials. Such a difference in CO2 reduction products stems from the stronger interaction between Mo2C(101) and Li2C2O4 than that of the CNT and Li2C2O4 based on the d. functional theory calculations, resulting in the selective stabilization of the intermediate product Li2C2O4 on the Mo2C surface.

ACS Applied Materials & Interfaces published new progress about Adsorption energy. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Synthetic Route of 143-24-8.

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

Yarkova, T. A. published the artcileQuantum-Chemical Prediction of the Redox Properties of Humic Acids, COA of Formula: C11H16O2, the main research area is humic acid antioxidant HOMO adsorption energy electrophilicity.

A comparative anal. of the reactivity indexes of the model structure of humic acids (HAs) and a number of antioxidants was carried out based on the results of quantum-chem. calculations performed using the d. functional theory (DFT) b3lyp/6-31g(d,p) method. With the use of 15 compounds as an example, it was found that the electronegativity index χ linearly correlates with the energy of the LUMO (ELUMO), R2 = 0.977. HAs (ELUMO = -2.52) are located close to mol. oxygen (ELUMO = -3.07), and this fact indicates a high electronegativity of these natural compounds It was proposed to evaluate the antioxidant ability of the organic matter of HAs by the adsorption energy of mol. oxygen. By determining the local min. of O2 sensing energy in different sections of HAs using the pm6 quantum chem. method, it was established that oxygen is adsorbed by a hydroxyl group with the energy ΔEads = -70 kcal/mol. This allows the highly reactive organic part of HAs to inhibit mol. oxygen in oxidation processes.

Solid Fuel Chemistry published new progress about Adsorption energy. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, COA of Formula: C11H16O2.

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

Cheng, Eric Jianfeng published the artcileCeramic-Based Flexible Sheet Electrolyte for Li Batteries, SDS of cas: 143-24-8, the main research area is lanthanum lithium zirconium oxide flexible electrolyte lithium metal battery; quasisolid electrolyte ionic liquid activation energy; Li-metal batteries; Li7La3Zr2O12; activation energy; flexible electrolyte; ionic liquid; quasi-solid electrolyte; room-temperature synthesis.

The increasing demand for high-energy-d. batteries stimulated the revival of research interest in Li-metal batteries. The garnet-type ceramic Li7La3Zr2O12 (LLZO) is one of the few solid-state fast-ion conductors that are stable against Li metal. However, the densification of LLZO powders usually requires high sintering temperatures (e.g., 1200°C), which likely result in Li loss and various side reactions. From an engineering point of view, high-temperature sintering of thin LLZO electrolytes (brittle) at a large scale is difficult. Moreover, the high interfacial resistance between the solid LLZO electrolytes and electrodes is a notorious problem. Here, we report a practical synthesis of a flexible composite Al-doped LLZO (Al-LLZO) sheet electrolyte (75μm in thickness), which can be mass-produced at room temperature This ceramic-based flexible sheet electrolyte enables Li-metal batteries to operate at both 60 and 30°C, demonstrating its potential application for developing practical Li-metal batteries.

ACS Applied Materials & Interfaces published new progress about Activation energy. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, SDS of cas: 143-24-8.

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

Chen, X. Chelsea published the artcileGel composite electrolyte – an effective way to utilize ceramic fillers in lithium batteries, COA of Formula: C10H22O5, the main research area is gel composite electrolyte ceramic filler lithium battery.

Achieving synergy between ion-conducting polymers and ceramics in a composite electrolyte has been proven to be difficult as the complicated ceramic/polymer interface presents challenges to understand and control. In this work, we report a strategy to utilize discrete ceramic fillers to form a gel composite electrolyte with enhanced transport properties for lithium metal batteries. The matrix of the composite membrane is crosslinked poly(ethylene oxide) with bis(trifluoromethane)sulfonimide lithium salt (LiTFSI). The membrane is plasticized with tetraethylene glycol di-Me ether (TEGDME). The incorporation of doped-lithium aluminum titanium phosphate particles (LICGC) into the membrane greatly improves the membrane’s cycling characteristics against the lithium electrode, exhibiting lower interfacial impedance, lower overpotential and higher rate capability. The underpinnings of the superior performance of the gel composite electrolyte are discussed in depth. LICGC can immobilize the TFSI- anions in the polymer matrix and simultaneously promote Li+ transport by increasing the plasticizer to Li+ ratio. Further, the transport enhancement is achieved without sacrificing mech. properties. The composite membrane shows significantly improved handleability and processability. This work sheds light on the design strategy for a safe electrolyte towards stable Li metal batteries.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about Activation energy. 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

Alzate-Carvajal, Natalia published the artcileA comparative study on the influence of the polymeric host for the operation of all-solid-state batteries at different temperatures, COA of Formula: C10H22O5, the main research area is polymer electrolyte solid state battery temperature.

Solid Polymer Electrolytes (SPE) are critical components to develop safe, high energy d. all solid-state lithium metal batteries (ASSB), providing favorable mech. properties and good stability vs Li-metal. Typically used poly(ethylene oxide) (PEO) based electrolytes do not allow cycling of all solid-state cells at room temperature due to the crystallization of PEO hindering the ionic transport. Increasing the ionic conductivity of SPE at lower temperature is then mandatory. This study addresses the challenge thanks to the use of Polymerized ionic liquid (PIL), poly(diallyldimethylammonium) bis(trifluoromethanesulfonyl)imide (PDADMAT) as polymeric host for producing SPE. Mixtures of PDADMAT and PEO with tetraglyme Li salt IL, LiG4TFSI, are prepared and their electrochem. properties in lithium metal batteries investigated. Through composition optimization, membranes containing 66 wt % of LiG4TFSI were selected as the best compromise in term of conduction properties (above 10-4 S/cm at room temperature), transference number of ca. 0.4 and mech. behavior. All-solid-state cells prepared using PDADMAT-based membranes were able to cycle at 60 °C and room temperature up to 0.425 mA/cm2 current densities whereas POE-based cells could only sustain 60 °C cycling. The study underlines the benefit of using IL and PIL as components of SPE for the operation of high performance ASSB at room temperature

Journal of Power Sources published new progress about Activation energy. 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