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Journal articles on the topic 'Oxidation of Methyl Glycol'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Sharanda, M. E., A. M. Mylin, O. Yu Zinchenko, and V. V. Brei. "Vapor-phase oxidation of propylene glycol-methanol mixture to methyl lactate on CeO2/Al2O3 catalyst." Catalysis and Petrochemistry, no. 31 (2021): 92–97. http://dx.doi.org/10.15407/kataliz2021.31.092.

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The vapor-phase oxidation of mixtures of propylene glycol with methanol and ethanol to methyl and ethyl lactate, respectively, on supported CeO2/Al2O3 catalyst with 10 wt.% CeO2 content was studied. The steel flow reactor with a fixed catalyst bed (4 cm3) was used. 20 wt.% solution of propylene glycol in alcohol was fed to the reactor inlet by Waters 950 pump at LHSV= 0.5-0.8 h-1. Reaction temperature and pressure were varied in the interval of 190-250 0C and 1.3-1.8 bars respectively. Compressed air was given to the reactor inlet at the molar ratio of propylene glycol/O2 = 1. The reaction pro

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2

Sharanda, M. E., A. M. Mylin, O. Yu Zinchenko, and V. V. Brei. "Vapor-phase oxidation of propylene glycol-methanol mixture to methyl lactate on CeO2/Al2O3 catalyst." Catalysis and Petrochemistry, no. 34 (2023): 86–91. http://dx.doi.org/10.15407/kataliz2023.34.086.

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The vapor-phase oxidation of mixtures of propylene glycol with methanol and ethanol to methyl and ethyl lactate, respectively, on supported CeO2/Al2O3 catalyst at 210-2500С was investigated. Air oxygen and a flow reactor with a fixed catalyst bed were used. A 20% solution of propylene glycol in alcohol was supplied to the reactor inlet. Oxidation of propylene glycol in the presence of methanol occurs according to the overall reaction CH3CHOHCH2OH +O2 + СН3OH = CH3CHOHCOOСН3 +2H2O. First, hydroxyacetone is formed, which is further oxidized to pyruvic aldehyde, which adds alcohol to form a hemia

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3

Varvarin, A. M., S. I. Levytska, A. M. Mylin, O. Yu Zinchenko, and V. V. Brei. "Vapor-phase oxidation of ethylene glycol methanolic solution into methyl glycolate over CuO-containing catalysts." Catalysis and Petrochemistry, no. 33 (2022): 59–65. http://dx.doi.org/10.15407/kataliz2022.33.059.

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The gas-phase oxidation of ethylene glycol and methanol mixture into methyl glycolate С2H6O2+CH3OH+O2 = C3H6O3+2H2О over synthesized copper-containing catalysts was studied. Methyl glycolate can be considered as raw material for obtaining biodegradable polyglycolide. The CuO-containing samples were synthesized by impregnation of granular oxide-supports (γ-Al2O3, SiO2 and MgO-ZrO2) with the calculated amount of aqueous solution of Cu(NO3)2·3H2O followed by heat treatment at 400 °C. In such way the supported CuO-MexOy /Al2O3 (Me = Mg, Ti, Cr, Co, Zn, Zr, Ag) samples have been prepared. Catalytic

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4

BHARAT, SINGH, K. SINGH V., K. SINGH A., and B. SINGH M. "Kinetics of Ruthenium(III)-catalysed Oxidation of Methyl Glycol by Acidic Solutions of N-Bromosuccinimide." Journal of Indian Chemical Society Vol. 63, Dec 1986 (1986): 1049–51. https://doi.org/10.5281/zenodo.6276727.

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Department of Chemistry, University of Allahabad, Allahabad-211 002 <em>Manuscript reclined 6 September 1986, revised 12 August 1986, accepted 18 November 1986</em> Kinetic data obtained in Ru<sup>III</sup>-catalysed oxidation of methyl glycol by acidic solutions of <em>N</em>-bromosuccinimide (NBS) in presence of mercuric acetate show first order kinetics in each NBS, methyl glycol, H<sup>+</sup> and Ru<sup>III</sup>. Zero effect of mercuric acetate, ionic strength, and negative effect of Cl<sup>-</sup> ions and <em>succinimide </em>addition <em>were </em>observed. Negative dielectric ef

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5

Wu, J. J., M. Muruganandham, L. T. Chang, and S. H. Chen. "Oxidation of Propylene Glycol Methyl Ether Acetate Using Ozone-Based Advanced Oxidation Processes." Ozone: Science & Engineering 30, no. 5 (2008): 332–38. http://dx.doi.org/10.1080/01919510802320032.

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6

Anjali, Goel, R. Verma G., and S. Singh H. "Kinetics and mechanism of iridium(III) chloride catalyzed oxidation of ethylene glycol and methyl glycol by hexacyanoferrate(III) in aqueous alkaline medium." Journal of Indian Chemical Society Vol. 79, Aug 2002 (2002): 665–67. https://doi.org/10.5281/zenodo.5843309.

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Department of Chemistry. Kanya Gurukul Mahavidhyalaya, Gurukul Kangri University, Jwalapur, Hardwar-249 407, India <em>E-mail : </em>dr_anjaligoel@rediffmail.com                 <em>Fax : </em>91-0133-452290 Chemistry Department, S. D. (P.G.) College, Muzaffernagar-251 001, India Chemical Laboratories, University of Allahabad, Allahabad-21 1 002, India <em>Manuscript received 28 July 2000, revised 27 September 2001. accepted 21 March 2002</em> The iridiurn(III) chloride catalyzed oxidation of ethylene glycol and me

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7

Kumar, Mithilesh, Kamini Singh, and R. A. Singh. "Aspects of thermodynamic parameters with a kinetic approach of transition metal catalysed by potassium bromate oxidation of methyl diethylene glycol (MDG) in alkaline medium." Research Journal of Chemistry and Environment 26, no. 9 (2022): 7–11. http://dx.doi.org/10.25303/2609rjce07011.

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The kinetic data obtained in ruthenium(VI) catalysed oxidation of methyldiethylene glycol (MDG) in alkaline medium using potassium bromate as oxidant and transition metal ruthenium tetroxide as a homogenous catalyst. In this kinetic reaction, Hg(OAc)2 acts as a liberated bromide ion scavenger. The result shows first order with respect to KBrO3, methyldiethylene glycol (MDG) and transition metal respectively. It shows zero order dependences of the reaction on aqueous sodium hydroxide, which is used as medium of the reaction and also zero effect of mercuric acetate. In this catalysed reaction, i

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8

Ying, Xiangxian, Can Wang, Shuai Shao, et al. "Efficient Oxidation of Methyl Glycolate to Methyl Glyoxylate Using a Fusion Enzyme of Glycolate Oxidase, Catalase and Hemoglobin." Catalysts 10, no. 8 (2020): 943. http://dx.doi.org/10.3390/catal10080943.

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Possessing aldehyde and carboxyl groups, glyoxylic acid and its ester derivatives serve as platform chemicals for the synthesis of vanillin, (R)-pantolactone, antibiotics or agrochemicals. Methyl glycolate is one of the by-products in the coal-to-glycol industry, and we attempted its value-added use through enzymatic oxidation of methyl glycolate to methyl glyoxylate. The cascade catalysis of glycolate oxidase from Spinacia oleracea (SoGOX), catalase from Helicobacter pylori (HpCAT) and hemoglobin from Vitreoscilla stercoraria (VsHGB) was firstly constructed, despite poor catalytic performance

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9

Ke, Yi-Hu, Xiao-Xia Qin, Chun-Ling Liu, Rong-Zhen Yang, and Wen-Sheng Dong. "Oxidative esterification of ethylene glycol in methanol to form methyl glycolate over supported Au catalysts." Catal. Sci. Technol. 4, no. 9 (2014): 3141–50. http://dx.doi.org/10.1039/c4cy00556b.

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10

Dionisio, Dawany, Artur J. Motheo, Cristina Sáez, Pablo Cañizares, and Manuel A. Rodrigo. "Competitive Anodic Oxidation of Methyl Paraben and Propylene Glycol: Keys to Understand the Process." ChemElectroChem 6, no. 3 (2018): 771–78. http://dx.doi.org/10.1002/celc.201801332.

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11

Benko, Ján, Oľga Vollárová, and Miroslav Kovarčík. "Kinetics of oxidation of the bis(ethylenediamine)mercaptoacetatocobalt(III) and cysteinato-bis(ethylenediamine)cobalt(III) ions by hydrogen peroxide in mixed aqueous-nonaqueous solutions." Collection of Czechoslovak Chemical Communications 53, no. 3 (1988): 554–62. http://dx.doi.org/10.1135/cccc19880554.

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The kinetics of oxidation of the coordinatively bonded sulphur in the cysteinato-bis(ethylenediamine)cobalt(III) and bis(ethylenediamine)mercaptoacetatocobalt(III) complexes by hydrogen peroxide to the sulphoxides was examined in HClO4 solutions (c(HClO4) = 1 – 500 mmol l-1) with a view to obtaining data characterizing the effect of the acid-base equilibria of the reactants on the reaction rate. The reaction rate was found affected particularly by the acid-base equilibrium of the oxidant, which plays a role in strongly acid solutions. The oxidation was also studied in water-methyl alcohol, wat

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12

Laxminarayana, E., P. Bhasker, D. Ramesh, Md Rafeeq, and B. Srinivasa Reddy. "Green Synthesis, Molecular Docking Studies and Anticancer Effects of 3-Methyl-2-(((1-Methyl-1H-Benzo[d]imidazol-2-yl) thio) Methyl) Quinazolin-4(3H)-One." Research Journal of Chemistry and Environment 25, no. 7 (2021): 138–46. http://dx.doi.org/10.25303/257rjce13821.

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compound 2-((1H-benzo[d]imidazol-2-yl)thio)acetic acid (1) with o-aminobenzamide (2) gave compound (2-[1-(1H-benzimidazol-2-yl)-ethylsulfanyl]-3H-quinazolin-4-one (3). 3 could also be syntehsized by an alternative two routes scheme 2 and scheme 3. It appears from scheme 3 that it is giving good yields under green and eco-friendly conditions using PEG-600 (polyethylent glycol). Compound 10 was synthesized in two routes scheme4 and scheme 5. It appears from Route B (Scheme 4) that it is giving good yields: alkylation followed by oxidation in route A followed by alkylation in PEG-600 used as a gr

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13

Prudius, S. V., N. L. Hes, A. Yu Zhuravlov, and V. V. Brei. "Oxidation of xylose – methanol mixture into methyl lactate and methyl glycolate on CeO2-SnO2/Al2O3 catalyst." Himia, Fizika ta Tehnologia Poverhni 15, no. 3 (2024): 340–48. http://dx.doi.org/10.15407/hftp15.03.340.

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The development of catalytic methods for xylose transformation as renewable raw material into value-added chemicals such as lactic and glycolic acid esters has been the subject of intensive research in recent years. Thus, methyl lactate and methyl glycolate are used as a starting material for the production of lactide and glycolide – an important monomers for the production of biodegradable polymers. The aim of this work was to search of simple effective catalyst for transformation of xylose into methyl esters of lactic and glycolic acids. For this purpose, tin-containing alumina doped with Сe

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14

Oliveira, Alexmiliano V., Eduardo A. T. Lanna, Naiara C. Motta, et al. "Extenders and Cryosolutions for Grumatã (Prochilodus Vimboides) Sperm Preservation." Cryoletters 43, no. 4 (2022): 246–54. http://dx.doi.org/10.54680/fr22410110612.

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BACKGROUND: Prochilodus vimboides populations are being reduced in rivers due to changes in their habitat, overfishing, urbanization, and pollution. OBJECTIVE: To evaluate the effect of sperm extender solutions for short-term storage and cryosolutions for freezing sperm of Prochilodus vimboides . MATERIALS AND METHODS:For short-term storage, the sperm was diluted in 0.9% NaCl, 1.2% NaCl, 5%glucose, 5% BTS ® , or 6% MIII ® . Sperm motility was evaluated after 0, 24, 48, and 72 h of short-term storage at 4-6ºC. For cryopreservation, sperm samples were diluted in the same extenders and factoriall

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15

Chiulan, Ioana, Denis Mihaela Panaitescu, Elena-Ruxandra Radu, et al. "Influence of TEMPO oxidation on the properties of ethylene glycol methyl ether acrylate grafted cellulose sponges." Carbohydrate Polymers 272 (November 2021): 118458. http://dx.doi.org/10.1016/j.carbpol.2021.118458.

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16

HAYASHI, T., T. INAGAKI, N. ITAYAMA, and H. BABA. "Selective oxidation of alcohol over supported gold catalysts: methyl glycolate formation from ethylene glycol and methanol." Catalysis Today 117, no. 1-3 (2006): 210–13. http://dx.doi.org/10.1016/j.cattod.2006.06.045.

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17

Darrow, William T., and Timothy D. Lash. "An alternative synthesis of benziporphyrins starting from isophthaloyl chloride." Journal of Porphyrins and Phthalocyanines 21, no. 07n08 (2017): 532–38. http://dx.doi.org/10.1142/s1088424617500493.

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An alternative route to benziporphyrins has been developed. Reaction of an [Formula: see text]-unsubstituted pyrrole ethyl ester with isophthaloyl chloride in the presence of aluminum chloride afforded a diketone that underwent selective reduction with diborane to give a benzitripyrrane. Cleavage of the ethyl esters with sodium hydroxide in refluxing ethylene glycol, followed by acid catalyzed condensation with a pyrrole dialdehyde and oxidation with DDQ, generated the targeted benziporphyrin product. Spectrophotometric titration of the benziporphyrin with trifluoroacetic acid (TFA) demonstrat

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18

Lewandowski, Grzegorz, Marcin Bartkowiak, and Eugeniusz Milchert. "Topical and prospective processes of acetoxylation." Polish Journal of Chemical Technology 11, no. 4 (2009): 46–51. http://dx.doi.org/10.2478/v10026-009-0042-x.

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Topical and prospective processes of acetoxylation The latest acetoxylation processes have been described in this work: oxidative acetoxylation of propene to allyl acetate, acetoxylation of propene to propene glycol and its acetates, acetoxylation of methyl tert-butyl ether and oxidative acetoxylation of cyclohexene by hydrogen peroxide. Acetoxylation of 1,3-butadiene, isobutene and toluene were presented together with a short description of the acetoxylation catalysts.

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19

Zhang, Yiran, Boyuan Xuan, Jiekai Wang, et al. "Synergistic Mechanism of Hydroxyl Regulation and a Polyvinylpyrrolidone Surfactant in Enhancing the Catalytic Oxidation Abilities of BiOBr." Molecules 30, no. 6 (2025): 1286. https://doi.org/10.3390/molecules30061286.

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The rational design of BiOBr photocatalysts with optimized surface properties and enhanced photooxidative capacities is crucial. This study proposes a synergistic strategy combining hydroxyl-rich solvents with polyvinylpyrrolidone (PVP) surfactants to modulate the structural and electronic properties of BiOBr through a solvothermal approach. The resulting self-assembled microspheres demonstrated exceptional efficiency in degrading ciprofloxacin (CIP), methyl orange (MO), and rhodamine B (RhB). Among the synthesized variants, BiOBr-EG-PVP (fabricated with ethylene glycol and PVP) exhibited the

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20

Liu, Zai-Qun. "How to Start a Total Synthesis from the Wieland-Miescher Ketone?" Current Organic Synthesis 16, no. 3 (2019): 328–41. http://dx.doi.org/10.2174/1570179416666190328233710.

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Background: he Wieland-Miescher ketone consists of a couple of enantiomers of 9-methyl- Δ5(10)-octalin-1,6-dione, in which the configuration at 9-position is S- or R-type. The Robinson annulation of 2-methyl-1,3-cyclohexanedione with methyl vinyl ketone is able to afford the Wieland-Miescher ketone. As widely used in the total synthesis, the Wieland-Miescher ketone is treated at the beginning of total synthesis, and protocols for treating the Wieland-Miescher ketone are worthy to be addressed. Objective: The presented review provides the progress of the usage of Wieland-Miescher ketone for the

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21

Guo, Ruihua, Na An, Shengli An, et al. "One-Step Preparation of Nitrogen-Doped Platinum-Based Catalysts for Electrocatalytic Oxidation of Ethanol." Catalysts 11, no. 11 (2021): 1264. http://dx.doi.org/10.3390/catal11111264.

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Pt/nitrogen-doped reduced graphene oxide (N-GO) catalysts were prepared by one-step microwave-assisted ethylene glycol reduction using N-methyl-2-pyrrolidone (NMP) as the nitrogen source. Nitrogen doping in GO and the deposition of highly dispersed platinum nanoparticles were completed at the same time. The effect of adding NMP on the microstructure and the electrocatalytic performance of Pt/N-GO catalysts were studied. The results show that Pt/N-GO catalysts have better particle size distribution and electrocatalytic performance than undoped catalysts. When the ratio of GO to NMP reaches 1:20

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22

Brei, V. V., S. I. Levytska, and S. V. Prudius. "To the question of oxidation on the surface of oxides: temperature- programmed oxidation of cyclohexanol." Catalysis and Petrochemistry, no. 33 (2022): 1–9. http://dx.doi.org/10.15407/kataliz2022.33.001.

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Temperature-programmed reaction (TPR) method with mass spectrometric control of the products was used to study of cyclohexanol oxidation into cyclohexanone on individual and mixed oxides supported by γ-Al2O3 and silica gel. In the TPR profiles the temperature of a maximum rate of cyclohexanone formation varies from 125°C for MoO3/Al2O3 to 235°C for less active CuO/Al2O3. The catalytic activity of individual oxides decreases in the order MoO3/Al2O3> V2O5/SiO2 > Fe2O3/Al2O3 > Bi2O5/Al2O3 > TiO2/SiO2 ≈ СeO2/Al2O3 > TiO2/Al2O3 > SnO2/Al2O3. As "reactive" oxygen in our TPR experim

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23

HOU, JIAN, MIN ZHANG, GUOTIAN YAN, and JIANJUN YANG. "PHOTOCATALYTIC ACTIVITY AND PHOTOCURRENT PROPERTIES OF TiO2 NANOTUBE ARRAYS INFLUENCED BY CALCINATION TEMPERATURE AND TUBE LENGTH." Surface Review and Letters 19, no. 03 (2012): 1250023. http://dx.doi.org/10.1142/s0218625x12500230.

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In this article, titanium oxide nanotube arrays (TiO2–NTAs) were fabricated by anodic oxidation in an ethylene glycol (EG) electrolyte solution containing 0.25 wt.% NH4F. By varying anodized time and annealed temperature, the obtained nanotube arrays behaved different photocatalytic (PC) activities and photocurrent properties. These samples were characterized by scanning electronic microscope (SEM), X-ray powder diffraction (XRD). It was indicated in SEM images that TiO2 nanotube manifests highly ordered structure which, however, has been completely destroyed when the temperature comes to 800°

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24

Singh, Kamini, and R. A. Singh. "Kinetics and Mechanism of Ru(III) Catalyzed Periodate Oxidation of Methyl Glycol and Diacetone Alcohol in Perchloric Acid." Asian Journal of Chemistry 26, no. 16 (2014): 5125–28. http://dx.doi.org/10.14233/ajchem.2014.16444.

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25

Cardoso, Inês M. F., Rita M. F. Cardoso, Luís Pinto da Silva, and Joaquim C. G. Esteves da Silva. "UV-Based Advanced Oxidation Processes of Remazol Brilliant Blue R Dye Catalyzed by Carbon Dots." Nanomaterials 12, no. 12 (2022): 2116. http://dx.doi.org/10.3390/nano12122116.

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UV-based advanced oxidation processes (AOPs) (UV/H2O2 and UV/S2O82−) with a titanium(IV)-doped carbon dot, TiP-CD, as a catalyst were developed for the decomposition of Remazol Brilliant Blue R (Reactive Blue 19), an anthraquinone textile dye (at T = 25 °C and pH = 7). The Ti-CD, with marked catalytic UV properties, was successfully synthesized by the one-pot hydrothermal procedure, using L-cysteine as carbon precursor, ethylenediamine as nitrogen source, PEG (polyethylene glycol) as a capping agent, and titanium(IV) isopropoxide (precursor of TiO2 doping). Contrary to azo dyes (methyl orange,

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26

Kumar, Rangaraju Satish, Naveen Mergu, Kyeong Su Min, and Young-A. Son. "Electrochemical, Photophysical and Theoretical Studies of Novel Zinc Phthalocyanines." Journal of Nanoscience and Nanotechnology 20, no. 9 (2020): 5402–10. http://dx.doi.org/10.1166/jnn.2020.17813.

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In this research, we successfully synthesized three novel zinc phthalocyanines and applied for electrochemical and photo physical properties. These phthalocyanines are naphthoxy derivatives with methyl, benzyl and butyl-benzyl, with halo substitution (PCME, PCBN and PCBBN) and poses very good solubility in all industrial solvents. To check the preliminary results of LCD green color filter properties of these molecules, we taken the UV-Visible absorption and transmittance studies in Propylene glycol monomethyl ether acetate and achieved around 90% of transmittance in the region of 400–550 nm. F

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27

Gonzalez Cobos, Jesus, Nicolas Grimaldos-Osorio, Essyllt Louarn, et al. "Electrooxidation of Poly(methyl-methacrylate) and Poly(ethylene glycol): Hydrogen Production from Plastic Wastes Electrolysis." ECS Meeting Abstracts MA2024-01, no. 56 (2024): 2981. http://dx.doi.org/10.1149/ma2024-01562981mtgabs.

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Introduction. Green H2 production by water electrolysis at low temperature has some bottlenecks mostly dealing with the anodic reaction, the oxygen evolution reaction (OER), given its thermodynamic and kinetic limitations [1]. One strategy to reduce the energy requirements for this H2 production route is the replacement of the conventional OER (with a thermodynamic potential of 1.23 V vs. Reversible Hydrogen Electrode (RHE)) by a less-energy intensive reaction like the electrooxidation of organic molecules (in some cases presenting a thermodynamic potential as low as c.a. 0 V vs RHE). This app

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28

Robnik, Blaž, Katerina Naumoska, and Zdenko Časar. "A Novel Testing Approach for Oxidative Degradation Dependent Incompatibility of Amine Moiety Containing Drugs with PEGs in Solid-State." Pharmaceutics 12, no. 1 (2020): 37. http://dx.doi.org/10.3390/pharmaceutics12010037.

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Reactive impurities originating from excipients can cause drug stability issues, even at trace amounts. When produced during final dosage form storage, they are especially hard to control, and often, factors inducing their formation remain unidentified. Oxidative degradation dependent formation of formaldehyde and formic acid is responsible for N-methylation and N-formylation of amine-moiety-containing drug substances. A very popular combination of polyethylene glycols and iron oxides, used in more than two-thirds of FDA-approved tablet formulation drugs in 2018, was found to be responsible fo

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29

Pham, Van Thi Bich, Hao Minh Hoang, Thuy Thi Thanh Nguyen, and Xuan Thi Hong Cao. "Decolorization of textile dyes by TiO2 -based photocatalyst using polyol as electron donor." Science and Technology Development Journal - Natural Sciences 2, no. 5 (2019): 83–89. http://dx.doi.org/10.32508/stdjns.v2i5.782.

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Decolorization of textile dyes including 2,6-dichlorophenolindophenol (DCIP), congo red (CR) and methyl orange (MO) by using TiO2-based photocatalyst in the presence of polyols such as glycerol and ethylene glycol was investigated. Polyols were used as sacrificial electron donors (SEDs). The results showed that the polyols improved the rate and yield of a light-induced decolorization of dyes in comparison with a photocatalytic reaction without polyols. A possible reaction mechanism of dye decolorization by the photocatalyst in the presence of electron donors was proposed. TiO2 photocatalyst ab

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Khodeir, Miriam, He Jia, Alexandru Vlad, and Jean-François Gohy. "Application of Redox-Responsive Hydrogels Based on 2,2,6,6-Tetramethyl-1-Piperidinyloxy Methacrylate and Oligo(Ethyleneglycol) Methacrylate in Controlled Release and Catalysis." Polymers 13, no. 8 (2021): 1307. http://dx.doi.org/10.3390/polym13081307.

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Hydrogels have reached momentum due to their potential application in a variety of fields including their ability to deliver active molecules upon application of a specific chemical or physical stimulus and to act as easily recyclable catalysts in a green chemistry approach. In this paper, we demonstrate that the same redox-responsive hydrogels based on polymer networks containing 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) stable nitroxide radicals and oligoethylene glycol methyl ether methacrylate (OEGMA) can be successfully used either for the electrochemically triggered release of aspirin

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31

Andersen, F. Alan. "Final Report on the Safety Assessment of Ceteareth-2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16, -17, -18,-20,-22,-23,-24,-25,-27, -28, -29, -30, -33, -34, -40, -50, -55, -60, -80, and -100." International Journal of Toxicology 18, no. 3_suppl (1999): 41–49. http://dx.doi.org/10.1177/109158189901800306.

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Ceteareths, used in a large number of cosmetics as surfactants, are the polyethylene glycol (PEG) ethers of Cetearyl Alcohol (q,v.). To supplement the limited available data on Ceteareths, previous findings from the safety assessment of Polyethylene Glycol (PEG), several fatty alcohols (Cetearyl Alcohol, Cetyl Alcohol, and Stearyl Alcohol), and Steareths were considered. These data indicate little evidence of toxicity. Although various metabolites of monoalkyl ethers of ethylene glycol are reproductive and developmental toxins, given the methods of manufacture of Ceteareth compounds, there is

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32

Zaborniak, Izabela, Natalia Pieńkowska, Paweł Chmielarz, Grzegorz Bartosz, Andrzej Dziedzic, and Izabela Sadowska-Bartosz. "Nitroxide-containing amphiphilic polymers prepared by simplified electrochemically mediated ATRP as candidates for therapeutic antioxidants." Nitroxide-containing amphiphilic polymers prepared by simplified electrochemically mediated ATRP as candidates for therapeutic antioxidants 273 (April 24, 2023): 125885. https://doi.org/10.1016/j.polymer.2023.125885.

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Abstract Nitroxide-containing amphiphilic polymers for therapeutic use were prepared in two-step procedure. Firstly, amphiphilic copolymers composed of hydrophobic poly(n-butyl acrylate) (P<em>n</em>BA) and hydrophilic poly[oligo(ethylene glycol) methyl ether acrylate] (POEGA) or poly(2-hydroxyethyl acrylate) (PHEA) were synthesized by simplified electrochemically mediated atom transfer radical polymerization (<em>se</em>ATRP). Due to the precisely-controlled structure of each polymer block proved by narrow dispersity (<em>M</em>w/<em>M</em>n < 1.19), chain-end halide functionality of macro

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33

Lai, Chin Wei, and Srimala Sreekantan. "Single Step Formation of C-TiO2Nanotubes: Influence of Applied Voltage and Their Photocatalytic Activity under Solar Illumination." International Journal of Photoenergy 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/276504.

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Self-aligned and high-uniformity carbon (C)- titania (TiO2) nanotube arrays were successfully formed via single step anodization of titanium (Ti) foil at 30 V for 1 h in a bath composed of ethylene glycol (EG), ammonium fluoride (NH4F), and hydrogen peroxide (H2O2). It was well established that applied voltage played an important role in controlling field-assisted oxidation and field-assisted dissolution during electrochemical anodization process. Therefore, the influences of applied voltage on the formation of C-TiO2nanotube arrays were discussed. It was found that a minimal applied voltage o

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Arterburn, Jeffrey B., and Marc C. Perry. "Selective Rhenium-Catalyzed Oxidation of Secondary Alcohols with Methyl Sulfoxide in the Presence of Ethylene Glycol, a Convenient One-Pot Synthesis of Ketals." Organic Letters 1, no. 5 (1999): 769–71. http://dx.doi.org/10.1021/ol990755e.

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Boonlha, Sukit, Pongkarn Chakthranont, and Sutasinee Kityakarn. "Effect of Metal Precursor Solution on Morphology of Porous LaCoO₃." Solid State Phenomena 302 (April 2020): 135–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.302.135.

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Porous materials are attractive in various applications such as energy storage and production, industrial processing, environmental treatment, and catalysis. Porous LaCoO3 was prepared using three different metal precursor solutions: i) 40%v/v methanol-ethylene glycol (40%Me/EG), ii) Lysine (Lys), and iii) Lysine/citric acid (Lys/Cit) with poly(methyl methacrylate) colloidal crystal as porous templates (PMMA-CCT). PMMA-CCT filled with metal precursor solution were carbonized under N2 followed by oxidized under 50% O2 in N2 atmosphere. X-ray diffraction patterns of the obtained porous LaCoO3 ar

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Ocampo, Maria T. A., Wenren Chaung, Dina R. Marenstein, et al. "Targeted Deletion of mNth1 Reveals a Novel DNA Repair Enzyme Activity." Molecular and Cellular Biology 22, no. 17 (2002): 6111–21. http://dx.doi.org/10.1128/mcb.22.17.6111-6121.2002.

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ABSTRACT DNA N-glycosylase/AP (apurinic/apyrimidinic) lyase enzymes of the endonuclease III family (nth in Escherichia coli and Nth1 in mammalian organisms) initiate DNA base excision repair of oxidized ring saturated pyrimidine residues. We generated a null mouse (mNth1−/−) by gene targeting. After almost 2 years, such mice exhibited no overt abnormalities. Tissues of mNth1−/− mice contained an enzymatic activity which cleaved DNA at sites of oxidized thymine residues (thymine glycol [Tg]). The activity was greater when Tg was paired with G than with A. This is in contrast to Nth1, which is m

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Mansinhos, Inês, Sandra Gonçalves, Raquel Rodríguez-Solana, et al. "Response of Thymus lotocephalus In Vitro Cultures to Drought Stress and Role of Green Extracts in Cosmetics." Antioxidants 11, no. 8 (2022): 1475. http://dx.doi.org/10.3390/antiox11081475.

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The impact of drought stress induced by polyethylene glycol (PEG) on morphological, physiological, (bio)chemical, and biological characteristics of Thymus lotocephalus López and Morales shoot cultures have been investigated, as well as the potential of iron oxide nanoparticles, salicylic acid, and methyl jasmonate (MeJA) as alleviating drought stress agents. Results showed that PEG caused oxidative stress in a dose-dependent manner, raising H2O2 levels and reducing shoots’ growth, photosynthetic pigment contents, and phenolic compounds production, especially phenolic acids, including the major

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Arterburn, Jeffrey B., and Marc C. Perry. "ChemInform Abstract: Selective Rhenium-Catalyzed Oxidation of Secondary Alcohols with Methyl Sulfoxide in the Presence of Ethylene Glycol, a Convenient One-Pot Synthesis of Ketals." ChemInform 30, no. 49 (2010): no. http://dx.doi.org/10.1002/chin.199949052.

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Fiore, Ambra Maria, Giuseppe Romanazzi, Cristina Leonelli, Piero Mastrorilli, and Maria Michela Dell’Anna. "Partial Hydrogenation of Soybean and Waste Cooking Oil Biodiesel over Recyclable-Polymer-Supported Pd and Ni Nanoparticles." Catalysts 12, no. 5 (2022): 506. http://dx.doi.org/10.3390/catal12050506.

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Biodiesel obtained through the transesterification in methanol of vegetable oils, such as soybean oil (SO) and waste cooking oil (WCO), cannot be used as a biofuel for automotive applications due to the presence of polyunsaturated fatty esters, which have a detrimental effect on oxidation stability (OS). A method of upgrading this material is the catalytic partial hydrogenation of the fatty acid methyl ester (FAME) mixture. The target molecule of the partial hydrogenation reaction is monounsaturated methyl oleate (C18:1), which represents a good compromise between OS and the cold filter pluggi

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40

Kiose, O. O., S. M. Savin, I. Y. Seifullina, O. E. Martsinko, and O. A. Chebanenko. "INFLUENCE OF BIMETALLIC COMPLEXES GERMANY (IV) AS MODIFIERS OF UNSATURATED OLIGOESTER ON THE KINETICS OF ITS COPOLYMERIZATION WITH METHYLMETHACRYLATE." Odesa National University Herald. Chemistry 26, no. 4(80) (2021): 61–69. http://dx.doi.org/10.18524/2304-0947.2021.4(80).250928.

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The possibility of using a number of bimetallic complexes of germanium (IV) - zinc / cobalt (II) / nickel (II) / cuprum (II) with hydroxycarboxylic acids as modifiers of unsaturated oligoester in the processes of its copolymerization with methyl methacrylate has been investigated. The modification was carried out by adding the corresponding complex to the reaction mixture during the polycondensation of maleic and phthalic anhydride with ethylene glycol at 175 °C. The kinetics of copolymerization at the initial stages was studied by dilatometry at temperatures from 50 °C to 60 °C. It has been s

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Yokoyama, Tomoya, Yuji Matsumoto, and Gyosuke Meshitsuka. "Characterization of active oxygen species under oxygen-alkali bleaching conditions." Holzforschung 59, no. 3 (2005): 269–75. http://dx.doi.org/10.1515/hf.2005.044.

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Abstract The reactivities of active oxygen species toward a non-phenolic lignin model compound, 1-(3,4-dimethoxyphenyl)-1,2-ethanediol (veratryl glycol, VG), and a carbo-hydrate model compound, methyl β-D-glucopyranoside (MGP), were examined and compared under practical oxygen bleaching conditions. In this study, active oxygen species were generated in situ by subjecting a phenolic compound, 2,4,6-trimethylphenol, to oxygen oxidation to faithfully simulate practical oxygen bleaching. The results indicated that the time-dependent reaction selectivity of active oxygen species between VG and MGP,

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Marinković, Dragana, Giancarlo C. Righini, and Maurizio Ferrari. "Synthesis, Optical, and Photocatalytic Properties of the BiVO4 Semiconductor Nanoparticles with Tetragonal Zircon-Type Structure." Photonics 12, no. 5 (2025): 438. https://doi.org/10.3390/photonics12050438.

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The optical characteristics of semiconductor’s particles are strongly dependent on physicochemical properties and the reduced size of the system. Decreasing the size of the material causes an increase in the ratio between the number of atoms on the surface and the number of atoms inside the particle, that is, the increase in specific surface area and surface defects. Due to their high surface-area-to-volume ratio and increased number of active sites on the surface, the nanostructured materials with altered optical properties compared to the bulk material are preferable for catalytic reactions.

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Leuthner, Birgitta, та Johann Heider. "Anaerobic Toluene Catabolism of Thauera aromatica: the bbs Operon Codes for Enzymes of β Oxidation of the Intermediate Benzylsuccinate". Journal of Bacteriology 182, № 2 (2000): 272–77. http://dx.doi.org/10.1128/jb.182.2.272-277.2000.

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ABSTRACT The pathway of anaerobic toluene oxidation to benzoyl coenzyme A (benzoyl-CoA) consists of an initial reaction catalyzed by benzylsuccinate synthase, a glycyl radical enzyme adding the methyl group of toluene to the double bond of a fumarate cosubstrate, and a subsequent β-oxidation pathway of benzylsuccinate. Benzylsuccinate synthase has been studied in some detail, whereas the enzymes participating in β oxidation of benzylsuccinate are unknown. We have investigated these enzymes by analyzing substrate-induced proteins in toluene-grown cells. Toluene-induced proteins were identified

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Akter, Sharmin, Md Golam Rasul, Mohammad Zakaria, et al. "Effect of Polyamine on Pigmentation, Reactive Oxidative Species and Antioxidant under Drought in Maize (Zea mays L.)." Turkish Journal of Agriculture - Food Science and Technology 6, no. 7 (2019): 799. http://dx.doi.org/10.24925/turjaf.v6i7.799-811.1493.

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To examine polyamines (PAs) effect in modulating the drought induced by polyethylene glycol (PEG) in maize (Zea mays L.) seedlings (variety Khoibhutta, 8 day seedlings grown in petri dish in incubator) were subjected to 20% PEG (polyethylene glycol) followed by 20 µmol PAs, Putrescine (Put), Spermidine (Spd) and Spermine (Spm) with PEG solution for 48 hours. Sharp decrease in Relative Water Content (RWC), Chl a, Chl b, carotenoid (Car) and total pigment content was observed under drought compared to control condition, while PAs application reversed their decreasing trends. PEG significantly in

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Sun, Jiangtian, Lizhong Liu, Yan Zhang, Mingming Guo, and Bing Zhou. "Improved catalytic oxidation of propylene glycol methyl ether over Sm–Mn and Sm–Co perovskite-based catalysts prepared by the recycling of spent ternary lithium-ion battery." Environmental Science and Pollution Research 28, no. 29 (2021): 38829–38. http://dx.doi.org/10.1007/s11356-021-13497-2.

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Cao, Chunhua, Aurélie Edwards, Mauricio Sendeski, et al. "Intrinsic nitric oxide and superoxide production regulates descending vasa recta contraction." American Journal of Physiology-Renal Physiology 299, no. 5 (2010): F1056—F1064. http://dx.doi.org/10.1152/ajprenal.00070.2010.

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Descending vasa recta (DVR) are 12- to 15-μm microvessels that supply the renal medulla with blood flow. We examined the ability of intrinsic nitric oxide (NO) and reactive oxygen species (ROS) generation to regulate their vasoactivity. Nitric oxide synthase (NOS) inhibition with Nω-nitro-l-arginine methyl ester (l-NAME; 100 μmol/l), or asymmetric NG, NG-dimethyl-l-arginine (ADMA; 100 μmol/l), constricted isolated microperfused DVR by 48.82 ± 4.34 and 27.91 ± 2.91%, respectively. Restoring NO with sodium nitroprusside (SNP; 1 mmol/l) or application of 8-Br-cGMP (100 μmol/l) reversed DVR vasoco

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Brei, V. V. "Researches on heterogeneous acid-base catalysis in Institute for sorption and problems of endoecology of the National Academy of Sciences of Ukraine." Catalysis and Petrochemistry, no. 34 (2023): 31–49. http://dx.doi.org/10.15407/kataliz2023.34.031.

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In chronological order, the reaseach results of Department of heterogeneous acid-base catalysis at Institute for sorption and endoecology problems in 2003-2023 are described. It relates to the synthesis, study and application of solid superacids WO3/ZrO2, WO3/ZrO2-SiO2, ZrO2-SiO2-Al2O3, ZrO2-SiO2-SnO2, as catalysts, in vacuum gas oil cracking, alkylation of isobutane with isobutanol, acylation toluene, oligomerization of tetrohydrofuran, acylation of methyl tert-butyl ether and other. Some study deals with a search of the correlations between of acid site strength of a catalyst and its activit

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48

Asim, K. Das, K. Mondal Sudhin, Kar Dalia, K. Bhuin Goutam, and Roy Aparna. "Kinetics and mechanism of chromium(III)-catalysed oxidation of ethane-1,2-diol and propane-1,2-diol by cerium(IV) in aqueous sulfuric acid media." Journal of Indian Chemical Society Vol. 77, May 2000 (2000): 223–27. https://doi.org/10.5281/zenodo.5867155.

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Department of Chemistry, Visva-Bharati, Santiniketan-731 235, India <em>Manuscript received 5 August 1999. accepted 31 December 1999</em> The kinetics and mechanism of chromium(lll)-catalysed oxidation of the title diols by cerium(IV) in aqueous sulfuric acid media to their corresponding aldehydes through the <strong>C-C</strong> bond cleavage (i.e. glycol splitting) under the conditions, [dioi]<sub>T</sub> >> [Ce<sup>IV</sup>]<sub>T</sub> >><strong> </strong>[Cr]<sub>T</sub> at different temperatures (35-50º) have been studied. In 1.0 mol dm<sup>-3</sup> sulfuric ac

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Wang, Hai Hua, Jin Juan Hu, Yi Ding Shen, Gui Qiang Fei, and Juan Zhang. "Preparation and Properties of Waterborne Cationic Polyurethanes/Polypyrrole Conductive Composites." Key Engineering Materials 538 (January 2013): 129–32. http://dx.doi.org/10.4028/www.scientific.net/kem.538.129.

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A series of waterborne cationic polyurethanes dispersions (CWPU) was prepared through prepolymerization method by reacting polyethylene glycol (PEG1000) and isophorone diisocyanate (IPDI) with N-methyl diethanol amine (MDEA) as chain extender. Then FeCl3 was employed as oxidant, therefore CWPU/polypyrrole (CWPU/PPy) conductive composite was prepared by in situ chemical oxidative polymerization of pyrrole (Py) in CWPU dispersions. Effects of molar ratio of FeCl3 to Py, Py concentration on the resistivity of the CWPU/PPy composite films were investigated. The structure, morphology and thermal st

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Karthikeyan, Parasuraman, Pundlik Rambhau Bhagat, and S. Senthil Kumar. "A novel, green 1-glycyl-3-methyl imidazolium chloride–copper(II) complex catalyzed CH oxidation of alkyl benzene and cyclohexane." Chinese Chemical Letters 23, no. 6 (2012): 681–84. http://dx.doi.org/10.1016/j.cclet.2012.04.014.

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