Results 51 to 60 of about 55,888 (222)
A Direct Method for Synthesis of Quinoxalines and Quinazolinones Using Epoxides as Alkyl Precursor
Molecules, 2023 An iodine-mediated one-pot synthesis of pyrrolo/indolo [1,2-a]quinoxalines and quinazolin-4-one via utilizing epoxides as alkyl precursors under metal-free conditions has been described.
Xueyan Lv +5 more
doaj +1 more source
Applied Sciences, 2021 Solid polymer electrolytes have been widely proposed for use in all solid-state lithium batteries. Advantages of polymer electrolytes over liquid and ceramic electrolytes include their flexibility, tunability and easy processability.
Gabrielle Foran +5 more
doaj +1 more source
Structure and Chemistry of Graphene Oxide in Liquid Water from First Principles [PDF]
Nature Communications, 2020, 11, 1566, 2019 Graphene oxide is a rising star among 2D materials, yet its interaction with liquid water remains a fundamentally open question: experimental characterization at the atomic scale is difficult, and modelling by classical approaches cannot properly describe chemical reactivity.
arxiv +1 more source
A INFLUÊNCIA DA LIGAÇÃO DE HIDROGÊNIO EM REAÇÕES QUÍMICAS: REAÇÃO DE PRILESCHAJEW
Química Nova, 2015 Theoretical analysis at the BHandHLYP/6-311++G(d,p) level of theory with the support of QTAIM calculations was used to reinvestigate the structure of an intermolecular system formed between ethylene oxide (C2H4O) and formic acid (HCO2H) after the ...
Mauro A. Bueno, Boaz G. Oliveira
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Lubricants, 2021 In the present investigation, in-situ epoxidation of waste cooking oil and its methyl esters was prepared, and the rheological behavior was analyzed for biolubricant applications.
Atanu Kumar Paul +2 more
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Divinylglycol, a Glycerol-Based Monomer: Valorization, Properties, and Applications [PDF]
Green Polymer Chemistry: New Products, Processes, and
Applications, pp.299-330, 2018, 2019 In the context of the development of bio-refineries, glycerol and its derivatives are co-products of the oleochemistry for which new valorization routes must be found. In this study, the polymerizability of divinylglycol (DVG), a symmetrical C-6 glycerol derivative which bears a vicinal diol and two vinyl functions was studied.
arxiv +1 more source
Journal of Catalysis, 2018 Chemical looping epoxidation of ethylene was demonstrated, whereby the sole oxidant was a solid oxygen carrier, 15 wt% Ag supported on SrFeO3. Ethylene reacted with a bed of carrier particles, without any O2(g) in the feed, to produce ethylene oxide (EO) and CO2.
Chan, MSC +3 more
openaire +2 more sources
Molecules, 2019 A series of 2-hydroxy-3-chrysino dithiocarbamate derivatives (3a−k) were designed, synthesized, and characterized for their structure determination by 1H NMR, 13C NMR, and HRMS (ESI) spectral data.
Pulabala Ramesh +4 more
doaj +1 more source
Use of Ionic Liquids and Co-Solvents for Synthesis of Thin-Film Composite Membranes
Membranes, 2021 Polyamide (PA) thin-film composite (TFC) membranes are commonly applied in reversed osmosis (RO) and nanofiltration (NF) applications due to their thin, dense top-layer, and high selectivity. Recently, the conventional organic phase (i.e., hexane) during
Peter-Renaat Van den Mooter +2 more
doaj +1 more source
Ag-Cu alloy surfaces in an oxidizing environment: a first-principles study [PDF]
, 2008 Recent experiments on model catalysts have shown that Ag-Cu alloys have improved selectivity with respect to pure silver for ethylene epoxidation. In this paper we review our first-principles investigations on the (111) surface of this alloy and present new findings on other low index surfaces.
arxiv +1 more source