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Browsing by Subject "Zinc"

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    • Article  

      Controlled production of ZnO nanoparticles from zinc glycerolate in a sol-gel silica matrix 

      Moleski, R.; Leontidis, Epameinondas; Krumeich, F. (2006)
      The controlled production of ZnO nanoparticles within an amorphous silica matrix is achieved using a new methodology consisting of four stages. First, precursor zinc glycerolate nanoparticles are produced within reversed ...

    • Article  

      Deactivation of Pd/Ce 0.5Zr 0.5O 2 model three-way catalyst by P, Ca and Zn deposition 

      Christou, Stavroula Y.; García-Rodríguez, S.; Fierro, José Luis García; Efstathiou, Angelos M. (2012)
      The negative effects of P, P-Ca and P-Zn deposition on the surface of a model 1wt% Pd/Ce 0.5Zr 0.5O 2 " three-way" catalyst (TWC) on its structural, morphological, textural, oxygen storage and release, and catalytic ...

    • Article  

      Effects of sol-gel synthesis on 5Fe-15Mn-40Zn-40Ti-O mixed oxide structure and its H2S removal efficiency from industrial gas streams 

      Polychronopoulou, Kyriaki; Efstathiou, Angelos M. (2009)
      A novel Fe-Mn-Zn-Ti-O mixed metal oxide has been developed for efficient low-temperature (25-50°C) removal of H2S from a gas mixture containing 600 ppm H2S, 25 vol% H2, 7.5 vol % CO 2, and 1-3 vol% H2O that simulates typical ...

    • Article  

      Equilibrium ion exchange studies of Zn2+, Cr3+, and Mn2+ on natural bentonite 

      Stylianou, Marinos A.; Inglezakis, Vassilis J.; Loizidou, Maria D.; Agapiou, Agapios; Itskos, Grigorios (2016)
      Bentonite is a clay mineral often used in ion exchange processes due to its high ion exchange capacity. In the present study, a commercially available in Greece market bentonite was obtained and characterized by XRD, XRF, ...

    • Article  

      Hall effect in detwinned single crystals of YBa2(Cu1-xZnx)3O7-δ in the mixed state 

      Schegolev, A. I.; Giapintzakis, John; Manson, J. T.; Ginsberg, D. M.; Dumler, I. (1996)
      The effect of zinc doping on the mixed-state Hall effect in detwinned single crystals of YBa2Cu3O7-δ has been studied. We observe a sign reveral of the Hall effect in crystals with a superconducting transition temperature ...

    • Article  

      Identification of a potent activator of Akt phosphorylation from a novel series of phenolic, picolinic, pyridino, and hydroxamic zinc(II) complexes 

      Georgiades, Savvas N.; Mak, L. H.; Angurell, I.; Rosivatz, E.; Firouz Mohd Mustapa, M.; Polychroni, Christoulla; Woscholski, R.; Vilar, R. (2011)
      The discovery of small-molecule modulators of signaling pathways is currently a particularly active area of research. We aimed at developing unprecedented metal-based activators of Akt signaling which can potentially find ...

    • Article  

      New Zn 2+ metal organic frameworks with unique network topologies from the combination of trimesic acid and amino-alcohols 

      Manos, Manolis J.; Moushi, Eleni E.; Papaefstathìou, Giannis S.; Tasiopoulos, Anastasios J. (2012)
      A series of new Zn 2+-trimesate (btc 3-) metal organic frameworks (MOFs) has been isolated in the presence of various amino-alcohols under solvothermal conditions. Thus, the reaction of ZnCl 2 with trimesic acid (H 3btc) ...

    • Article  

      The nitridation of ZnO nanowires 

      Zervos, Matthew; Karipi, C.; Othonos, Andreas S. (2012)
      ZnO nanowires (NWs) with diameters of 50 to 250 nm and lengths of several micrometres have been grown by reactive vapour transport via the reaction of Zn with oxygen on 1 nm Au/Si(001) at 550°C under an inert flow of Ar. ...

    • Article  

      The nitridation of ZnO nanowires 

      Zervos, Matthew; Karipi, C.; Othonos, A. (2012)
      ZnO nanowires (NWs) with diameters of 50 to 250 nm and lengths of several micrometres have been grown by reactive vapour transport via the reaction of Zn with oxygen on 1 nm Au/Si(001) at 550°C under an inert flow of Ar. ...

    • Article  

      Novel Zn-Ti-based mixed metal oxides for low-temperature adsorption of H2S from industrial gas streams 

      Polychronopoulou, Kyriaki; Fierro, José Luis García; Efstathiou, Angelos M. (2005)
      The efficiency of various Zn-Ti-based mixed metal oxides prepared by the sol-gel method towards H2S adsorption from a gas mixture containing 0.06 vol.% H2S, 25 vol.% H2, 7.5 vol.% CO2 and 1 vol.% H2O was studied in the ...

    • Article  

      Quantitative preparation of 3,4-di(methylene)tetrahydrothiophene-1,1- dioxide by Zn-induced 1,4-debromination. A valuable 6-C reactive diene in [4+2] cycloadditions with DMAD and [60]fullerene 

      Markoulides, Marios Savva; Ioannou, Charalambos P.; Manos, Manolis J.; Chronakis, Nikos (2012)
      Optimum reaction conditions for the quantitative preparation of the highly reactive 3,4-di(methylene)tetrahydrothiophene-1,1-dioxide are described. The method involves the zinc-induced 1,4-debromination of 3,4-bis(bromom ...

    • Article  

      Regeneration of three-way automobile catalysts using biodegradable metal chelating agent-S, S-ethylenediamine disuccinic acid (S, S-EDDS) 

      Subramanian, B.; Christou, Stavroula Y.; Efstathiou, Angelos M.; Namboodiri, V.; Dionysiou, Dionysios Demetriou D. (2011)
      Regeneration of the activity of three-way catalytic converters (TWCs) was tested for the first time using a biodegradable metal chelating agent (S, S-ethylenediamine disuccinic acid (S, S-EDDS). The efficiency of this novel ...

    • Article  

      Ring contraction of 1,3-diphenylbenzo[1,2,4]triazinyl radicals to 1,2-diphenylbenzimidazoles 

      Berezin, Andrey A.; Koutentis, Panayiotis Andreas (2014)
      Reductive ring contraction of 1,3-diphenyl-1,4-dihydrobenzo[e][1,2,4] triazin-4-yls (Blatter's radicals) using zinc powder (2 equiv.) in acetic acid heated to ca. 118 °C gives 1,2-diphenylbenzimidazoles in high yield. ...

    • Article  

      Suppression of the oxygen storage and release kinetics in Ce0.5Zr0.5O2 induced by P, Ca and Zn chemical poisoning 

      Christou, Stavroula Y.; Álvarez-Galván, M. C.; Fierro, José Luis García; Efstathiou, Angelos M. (2011)
      The present investigation concerns for the first time the understanding of the individual and combined effects of phosphorous with calcium or zinc deposited on a Ce0.5Zr0.5O2 solid followed by calcination in 20%O2/He at ...

    • Article  

      A systematic evaluation of the interplay of weak and strong supramolecular interactions in a series of Co(II) and Zn(II) complexes tuned by ligand modification 

      Kounavi, Konstantina A.; Manos, Manolis J.; Moushi, Eleni E.; Kitos, Alexandros A.; Papatriantafyllopoulou, Constantina; Tasiopoulos, Anastasios J.; Nastopoulos, Vassilios (2012)
      A systematic investigation on a designed series of 21 transition metal complexes has been carried out with the intention to explore and assess the relative strength and the way in which intermolecular interactions, namely, ...

    • Article  

      Zn3N2nanowires: Growth, properties and oxidation 

      Zervos, Matthew; Karipi, C.; Othonos, Andreas S. (2013)
      Zinc nitride (Zn3N2) nanowires (NWs) with diameters of 50 to 100 nm and a cubic crystal structure have been grown on 1 nm Au/Al2O3via the reaction of Zn with NH3including H2between 500°C and 600°C. These exhibited an optical ...

    • Article  

      Zn3N2nanowires: Growth, properties and oxidation 

      Zervos, Matthew; Karipi, C.; Othonos, A. (2013)
      Zinc nitride (Zn3N2) nanowires (NWs) with diameters of 50 to 100 nm and a cubic crystal structure have been grown on 1 nm Au/Al2O3via the reaction of Zn with NH3including H2between 500°C and 600°C. These exhibited an optical ...

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