Tag: 100-200

On April 11, 2007, Smith, P. Griffin Jr.; Dhanuka, Varun V.; Hwang, Ha S.; Lim, Kwon Taek; Johnston, Keith P. published an article.Application of 2160-93-2 The title of the article was Tertiary Amine Esters for Carbon Dioxide Based Emulsions. And the article contained the following:

Tertiary amine esters, a new class of surfactants for CO2-based dispersions, stabilize carbon dioxide in water macroemulsions for several hours even at a CO2 d. as low as 0.74 g/mL (70 bar) at 298 K. The combination of a weakly hydrophilic tertiary amine, which is protonated by carbonic acid, and branched ester tails provides proper values of the hydrophilic-CO2-philic balance (HCB) for emulsion stabilization. The surfactant nitrilotripropane-1,2-diyl tripivalate (tBu-TIA) lowered the CO2-water interfacial tension to 2.6 mN/m as a result of the stubby architecture (low aspect ratio) of the surfactant tail, which helps block contact between water and carbon dioxide. The high level of methylation produces a smaller interfacial tension and greater emulsion stability relative to nitrilotripropane-1,2-diyl triacetate (TIA). Relative to the high-pressure CO2-water system with a pH 3.3, an increase in pH with the addition of NaOH decreases interfacial activity and reduces emulsion stability, as the surfactant is deprotonated. The adsorption isotherm shows a high interfacial area per surfactant mol. (400 Å2) as a result of the stubby structure of the surfactant. The extremely low aspect ratio of this surfactant compared to other hydrocarbon surfactants shields water from CO2 at the interface, resulting in a lower interfacial tension, and minimizes interactions between surfactant tail groups. These factors make these low-mol.-weight amine esters desirable for tunable CO2-in-water emulsions, as a replacement for more widely used fluorinated surfactants. The facile synthesis of a variety of tertiary amine esters makes this class of surfactants attractive for developing structure-property relationships. The experimental process involved the reaction of 2,2′-(tert-Butylazanediyl)diethanol(cas: 2160-93-2).Application of 2160-93-2

The Article related to tertiary amine surfactant carbon dioxide dispersion stabilization interfacial activity, Surface Active Agents and Detergents: Preparation, Analysis, and Properties Of Surfactants Other Than Soaps and other aspects.Application of 2160-93-2

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On October 15, 2022, Chen, Xiong; Tang, Weinan; Cai, Lin; Zhu, Yuchen; Peng, Shaobo; Li, Xiaofei; Hu, Xiaoying; Qiao, Liang; Liu, Shujie published an article.Quality Control of 2,3-Dihydroxypropanoic acid The title of the article was Superdispersed NiCo2S4 nanoparticles anchored on reduced graphene oxide for efficient hydrogen evolution reaction in acidic and alkaline media. And the article contained the following:

Reasonable design and preparation of the earth abundant and efficient electrocatalysts for hydrogen production from the electrolysis of water is an effective solution to solve the growing global energy and environmental crisis. Herein, in order to increase the number of the active sites and fasten the charge transfer of NiCo2S4, a facile two-step solvothermal method is used to prepare superdispersed NiCo2S4 nanoparticles anchored on reduced graphene oxide (NCS/rGO) as low-cost and high-efficient electrocatalyst for hydrogen evolution reaction (HER). By modulating the amount of rGO, the as-prepared NCS/rGO composite shows high sp. surface area of 114.4 m2 g-1 and small particle size of 50-60 nm, which exhibits excellent HER activity with a lower overpotential of 115 mV at 10 mA cm-2 and a smaller charge transfer resistance of 12 Ω in acidic solution Addnl., in the case of alk. solution, the as-prepared NCS/rGO composite also exhibits a low overpotential of 241 mV and a small Tafel slope of 110 mV dec-1. The significantly improved HER performance of NCS/rGO composite can be ascribed to the constructed heterogeneous interface between NiCo2S4 nanoparticles and rGO, which can inhibit the aggregation of NiCo2S4 nanoparticles and enhance the intrinsic elec. conductivity In light of the excellent HER electrocatalytic performance, the inexpensive NCS/rGO composite might be regarded as a promising alternative in HER and other energy conversion and storage applications. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Quality Control of 2,3-Dihydroxypropanoic acid

The Article related to nickel cobalt sulfide reduced graphene oxide electrocatalyst hydrogen evolution, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Quality Control of 2,3-Dihydroxypropanoic acid

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Naik, Keerti M.; Hashisake, Kanaru; Hamada, Takuya; Higuchi, Eiji; Inoue, Hiroshi published an article in 2022, the title of the article was Intermetallic PdZn nanoparticles loaded on deficient TiO2 nanosheets as a support: a bifunctional electrocatalyst for oxygen reduction in PEMFCs and the glycerol oxidation reactions.Name: 2,3-Dihydroxypropanoic acid And the article contains the following content:

Exploring simple and flexible methods to synthesize an oxygen reduction reaction (ORR) catalyst with high catalytic activity is of great significance for the large-scale application of fuel cells. Here we developed an intermetallic PdZn on a TiO2-x NS support catalyst by a simple strategy for large-scale production through an impregnation process involving low temperature annealing. This electrocatalyst prepared by a simple and single step exhibited better ORR activities in both acidic and alk. solutions at room temperature with a higher value of electrochem. active surface area (ECSA). The repeated square-wave potential cycling test at 80°C over 10 000 cycles confirmed the durability of the catalyst. The fuel cell using the PdZn/TiO2-x NS catalyst showed a high power d. of 855 mW cm-2, which exceeds that of the PdZn supported carbon catalyst. Also, the proposed catalyst showed excellent stability over more than 100 h in proton-exchange membrane fuel cell (PEMFC) performance. Thus, the proposed TiO2-x NSs will be an alternative to a carbon support in future PEMFC technol. Furthermore, PdZn/TiO2-x NSs also showed higher activity and stability for the glycerol oxidation reaction (GOR) and higher selectivity for glycerate production than PdZn/C. Hence, the PdZn/TiO2-x NS electrocatalyst opens up new avenues towards energy conversion devices such as DAFCs and metal-air batteries. This new study provides an opportunity for further research to rationally design more carbon free supported nanostructured intermetallics by using different transition metals for efficient electrochem. energy storage devices. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Name: 2,3-Dihydroxypropanoic acid

The Article related to palladium zinc nanoparticle titania catalyst support pemfc glycerol oxidation, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Name: 2,3-Dihydroxypropanoic acid

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On September 30, 2022, Sidiq, Alif Lombardoaji; Floweri, Octia; Karunawan, Jotti; Abdillah, Oktaviardi Bityasmawan; Santosa, Sigit Puji; Iskandar, Ferry published an article.Computed Properties of 473-81-4 The title of the article was NCM cathode active materials reproduced from end-of-life Li-ion batteries using a simple and green hydrometallurgical recycling process. And the article contained the following:

LiNi1/3Co1/3Mn1/3O2 (NCM 111) cathode material was reproduced from end-of-life lithium-ion batteries (LIBs) via a green hydrometallurgical process including environmentally friendly DL-malic acid leaching, oxalate co-precipitation, and heat treatment. The leaching reached 95% efficiency by using glucose as reducing agent. X-ray fluorescence anal. revealed effective oxalate co-precipitation of metal ions in the form of MC2O4•2H2O (M = Ni, Co, Mn) with Ni, Co, and Mn ratio was approx. 1:1:1. Heat treatment on the mixture of precipitateand lithium salt at 900°C successfully reproduced NCM 111 cathode as confirmed via x-ray diffraction characterization. This sample also demonstrated comparable electrochem. properties with the fresh NCM cathode powder, with an initial specific discharge capacity of 158 mAh/g (0.2 C) and high rate capabilities. After 100 cycles of charge-discharge measurement at 0.2 C, this sample also revealed stable cycling ability with capacity retention of 93%, ensuring the good features of the reproduced cathode. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Computed Properties of 473-81-4

The Article related to lithium ion battery ncm cathode green hydrometallurgical recycling process, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Computed Properties of 473-81-4

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Alcohol – Wikipedia,
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On June 14, 2022, Moreira, Thamyres F. M.; Andrade, Adalgisa R.; Boniface Kokoh, K.; Morais, Claudia; Napporn, Teko W.; Olivi, Paulo published an article.COA of Formula: C3H6O4 The title of the article was An FTIR Study of the Electrooxidation of C2 and C3 Alcohols on Carbon-Supported PdxRhy in Alkaline Medium. And the article contained the following:

We have investigated the promoting effect of Rh addition to Pd-based materials in the electrooxidation of ethanol and glycerol. Physicochem. characterizations (XRD, EDX, TEM, and XPS) of the PdxRhy/C materials, prepared by bromide anion exchange (BAE), showed that the exptl. bimetallic compositions were close to the targeted ones. PdxRhy/C particle sizes ranged from 2.2 to 3.8 nm. The ethanol oxidation reaction (EOR) on the PdxRhy/C catalysts yielded four times larger carbonate (CO32-) amount As for the glycerol oxidation reaction (GOR), the onset potential on the Pd50Rh50/C catalyst occurred at lower potentials. Chromatog. anal. combined with in situ Fourier transform IR (FTIR) spectroscopy showed that GOR on the Pd50Rh50/C catalyst selectively and quant. produced glycerate and tartronate. The outstanding ability of the Pd50Rh50/C catalyst toward EOR and GOR was correlated to the electronic effect expressed by a neg. potential shift (200 mV) and the 47% alloying degree in the Pd50Rh50/C structure. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).COA of Formula: C3H6O4

The Article related to electrooxidation alc carbon palladium rhodium alk medium, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.COA of Formula: C3H6O4

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Alcohol – Wikipedia,
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Zhang, Xiaolong; Kong, Hongtao; Zhang, Xuepeng; Jia, Hengmin; Ma, Xiuxia; Miao, Hui; Mu, Yan; Zhang, Guoqing published an article in 2021, the title of the article was Design and production of environmentally degradable quaternary ammonium salts.Computed Properties of 143-10-2 And the article contains the following content:

Quaternary ammonium compounds (QACs) are a class of cationic surfactants routinely used for the disinfection of industries, institutions and households, and have seen a sharp increase in use during the COVID-19 pandemic. However, current com. QACs consist of only stable chem. bonds such as C-N, C-C, and C-H, which makes their natural degradation rather difficult. Recent studies suggest that emerging neg. environmental impacts, such as systemic antibiotics resistance and toxicity to living organisms, are directly associated with prolonged exposure to QACs. Here we report a new class of QAC which contains relatively volatile chem. functional groups such as ester and thioether bonds. Degradation kinetics in aqueous solutions suggests that the stability of these QACs depends not only on their intrinsic hydrophobicity but also on external environmental factors such as pH, temperature and ion presence. The microbicidal effects of QACs containing carbon chains with various lengths were also tested, one of which, named “Ephemora”, is highly active against a broad spectrum of microbes including fungi, bacteria and viruses, for instance, methicillin-resistant Staphylococcus aureus (MRSA). The easy synthesis and purification of Ephemora starting from inexpensive com. available reagents, together with its excellent antimicrobial activity and ability to degrade in natural waters over time, make its large-scale com. production possible. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Computed Properties of 143-10-2

The Article related to environment degradable quaternary ammonium salt, Surface Active Agents and Detergents: Preparation, Analysis, and Properties Of Surfactants Other Than Soaps and other aspects.Computed Properties of 143-10-2

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On September 15, 2005, Liu, Lu; Xu, Chunye; Legenski, Susan E.; Taya, Minoru published a patent.Formula: C7H16O2 The title of the patent was Switchable window based on electrochromic polymers. And the patent contained the following:

Syntheses of a new blue EC monomer (ProDOT-MePro), and a new red EC monomer (ProDOP-Et2) are described. Two addnl. new types of EC monomers based on 3,4-alkylenedioxythiophene include fluorinated EC monomers and an EC monomer including silicon. EC polymer devices having more than one different color EC polymer to enable addnl. colors to be provided using subtractive color mixing are also described, as well as EC polymer devices incorporating a logo, image, or text, are generally obscured when the device is colored, but become visible when the device is not colored. Also described are EC polymer devices that include a cathodic EC polymer layer, a gel electrolyte, a counter electrode, and a reference electrode. Working prototypes of such devices exhibit significant increases in the speed of transition of the EC device from a colored state to a transparent state. The experimental process involved the reaction of 2-Methyl-2-propylpropane-1,3-diol(cas: 78-26-2).Formula: C7H16O2

The Article related to switchable window electrochromic polymer based, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Formula: C7H16O2

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On January 12, 2011, Yu, Shishan; Chen, Xiaoguang; Xu, Song; Qu, Jing; Zhou, Qing; Ma, Shuanggang published a patent.Formula: C3H10ClNO The title of the patent was Cassaine alkaloid analogs, their preparation method, and medical application. And the patent contained the following:

The invention disclosed a kind of Cassaine alkaloid analogs, preparation method, and medical application as antitumor agents. The claimed Cassaine alkaloid analogs are shown in structure I and II (R1, R2 = H, (un)substituted C1-C6 alkyl, Ph, -NR1R2 forming 5-member, 6-member or 7-member heterocycle containing 1-3 heteroatoms; R = H, (un)substituted C1-C6 alkyl). The claimed compounds are prepared from III and R1NHR2 amine via amidation (detail procedure given). The obtained compound and pharmaceutical acceptable salts , hydrates, esters, etc., can be used as antitumor agents for preventing and/or treating cancer. The experimental process involved the reaction of 2-(Methylamino)ethan-1-ol hydrochloride(cas: 62640-03-3).Formula: C3H10ClNO

The Article related to cassaine alkaloid analog synthesis amidation antitumor agent, Terpenes and Terpenoids: Diterpenes (C20), Including Gibberellins, Retinoids, Quassinoids, and Tocopherols and other aspects.Formula: C3H10ClNO

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Bettoni, Leo; Gaillard, Sylvain; Renaud, Jean-Luc published an article in 2020, the title of the article was A phosphine-free iron complex-catalyzed synthesis of cycloalkanes via the borrowing hydrogen strategy.Synthetic Route of 111-29-5 And the article contains the following content:

Herein, a diaminocyclopentadienone iron tricarbonyl complex catalyzed synthesis of substituted cyclopentane, cyclohexane and cycloheptane compounds 2,4,6-(Me)3-3,5-(R1)2C6C(O)R (R = cyclohexyl, cyclopentyl, cycloheptyl, etc.; R1 = H, Me) using the borrowing hydrogen strategy in the presence of various substituted primary and secondary 1,n diols e.g., 2-methylpentane-1,5-diol as alkylating reagents was reported. Deuterium labeling experiments confirm that the diols were the hydride source in this cascade process. The experimental process involved the reaction of Pentane-1,5-diol(cas: 111-29-5).Synthetic Route of 111-29-5

The Article related to cycloalkane preparation diastereoselective, pentamethylphenyl ethanone diol cyclization iron catalyst, Alicyclic Compounds: Higher Members, Including Annulenes, Tropones, Tropolones, and Tropylium Compounds and other aspects.Synthetic Route of 111-29-5

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Xie, Zuoti; Baldea, Ioan; Nguyen, Quyen Van; Frisbie, C. Daniel published an article in 2021, the title of the article was Quantitative analysis of weak current rectification in molecular tunnel junctions subject to mechanical deformation reveals two different rectification mechanisms for oligophenylene thiols versus alkane thiols.HPLC of Formula: 143-10-2 And the article contains the following content:

Metal-mol.-metal junctions based on alkane thiol (CnT) and oligophenylene thiol (OPTn) self-assembled monolayers (SAMs) and Au electrodes are expected to exhibit similar elec. asymmetry, as both junctions have one chemisorbed Au-S contact and one physisorbed, van der Waals contact. Asymmetry is quantified by the current rectification ratio RR apparent in the current-voltage (I-V) characteristics. Here we show that RR < 1 for CnT and RR > 1 for OPTn junctions, in contrast to expectation, and further, that RR behaves very differently for CnT and OPTn junctions under mech. extension using the conducting probe at. force microscopy (CP-AFM) testbed. The anal. presented in this paper, which leverages results from the previously validated single level model and ab initio quantum chem. calculations, allows us to explain the puzzling exptl. findings for CnT and OPTn in terms of different current rectification mechanisms. Specifically, in CnT-based junctions the Stark effect creates the HOMO level shifting necessary for rectification, while for OPTn junctions the level shift arises from position-dependent coupling of the HOMO wavefunction with the junction electrostatic potential profile. On the basis of these mechanisms, our quantum chem. calculations allow quant. description of the impact of mech. deformation on the measured current rectification. Addnl., our anal., matched to experiment, facilitates direct estimation of the impact of intramol. electrostatic screening on the junction potential profile. Overall, our examination of current rectification in benchmark mol. tunnel junctions illuminates key phys. mechanisms at play in single step tunneling through mols., and demonstrates the quant. agreement that can be obtained between experiment and theory in these systems. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).HPLC of Formula: 143-10-2

The Article related to oligophenylene alkane thiol current rectification mol tunnel junction, Electric Phenomena: Dielectric and Electret Properties (Including Electric Moments, and Polarizability) and other aspects.HPLC of Formula: 143-10-2

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Alcohol – Wikipedia,
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