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2.229 Aktuelle Fachpublikationen zum Thema temperature

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Impact of oxygen transport properties on polypropylene thermal oxidation, part 1: Effect of oxygen solubility

18.10.2014 | Alexandre François‐Heude, Emmanuel Richaud, Alain Guinault, Eric Desnoux, Xavier Colin, Journal of Applied Polymer Science, 2014

ABSTRACT A general kinetic model is proposed to describe the polypropylene thermal oxidation of thin polypropylene films in a wide range of temperatures (from 60 to 200°C) and oxygen partial pressures (from 0.02 to 5 MPa) using a single set of parameters. This model was calibrated with several ...

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Transition metal oxide catalysts as an alternative for the oxidation of nitrogen monoxide to nitrogen dioxide: kinetic modelling at high space velocity

18.10.2014 | Leonardo Tecchio, Pablo Marín, Fernando V. Díez, Salvador Ordóñez, Journal of Chemical Technology & Biotechnology, 2014

Abstract Background The oxidation of NO to NO2 is a key step in environmental pollution abatement techniques, such as the “fast‐SCR” or the diesel engines catalytic traps. In both cases, the conversion of an important fraction of NO into NO2 is a key step. In this work, two commercially ...

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Rhodium(III) cationic methyl complexes containing dimethylformamide ligand, cis-[Rh(β-diket)(PPh3)2(CH3)(DMF)][BPh4] (β-diket = acetylacetonate or benzoylacetonate), in comparison with their acetonitrile analogs

17.10.2014 | Author(s): Elizaveta P. Shestakova , Yuri S. Varshavsky , Victor N. Khrustalev , Galina L. Starova , Sergei N. ..., Journal of Organometallic Chemistry, 2014

Publication date: 15 December 2014 Source:Journal of Organometallic Chemistry, Volume 774 Author(s): Elizaveta P. Shestakova , Yuri S. Varshavsky , Victor N. Khrustalev , Galina L. Starova , Sergei N. Smirnov The rhodium(III) cationic methyl complexes, ...

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Ceria–Zirconia Solid Solutions (Ce1–xZrxO2−δ, x ≤ 0.2) for Solar Thermochemical Water Splitting: A Thermodynamic Study

17.10.2014 | Yong Hao; Chih-Kai Yang; Sossina M. Haile, Chemistry of Materials, 2014

The redox behavior of ceria–zirconia solid solutions (or Zr-substituted ceria, ZSC) with a Zr content of up to 20 mol % is studied by thermogravimetry (TG) between 600 °C and 1490 °C under controlled atmospheres. Thermodynamic properties, specifically standard oxidation enthalpy, ΔHoxd⊖, and ...

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Sulfur‐Doped Carbons Prepared from Eutectic Mixtures Containing Hydroxymethylthiophene as Metal‐Free Oxygen Reduction Catalysts

16.10.2014 | Nieves López‐Salas, Francisco del Monte, Aitana Tamayo, José Luís G. Fierro, Antonio L. De Lacey, M. Luisa Ferrer, M ..., ChemSusChem, 2014

Abstract A template‐free approach based on the use of eutectic mixtures composed of 2‐hydroxymethylthiophene and furfuryl alcohol has been designed for the preparation of hierarchical sulfur‐doped carbons (SPCs) in monolithic form. The temperature used for carbonization, for example, 600, 800, ...

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The use of a combined respirometric – titrimetric setup to assess the effect of environmental conditions on micro – algal growth rate

16.10.2014 | Bjorge Decostere, Stijn W.H. Van Hulle, Mathieu Duyck, Thomas Maere, Han Vervaeren, Ingmar Nopens, Journal of Chemical Technology & Biotechnology, 2014

Abstract Background Due to their complexity a lot of research is performed on micro‐algal systems for wastewater treatment. In this work a previously developed combined respirometric – titrimetric approach was used for the determination of micro ‐ algal kinetics. A Plackett‐ Burman design ...

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Temperature and oxygen-concentration dependence of singlet oxygen production by RuPhen as induced by quasi-continuous excitation

15.10.2014 | Jaroslav Varchola; Veronika Huntosova; Daniel Jancura; Georges Wagnieres; Pavol Miskovsky; Gregor Bano, Photochemical & Photobiological Sciences, 2014

Assessment of oxygen partial pressure (pO2) by luminescence lifetime measurements of ruthenium coordination complexes has been studied intensively during the last decades. RuPhen (dichlorotris(1,10-phenanthroline) ruthenium(II) hydrate) is a water soluble molecule that has been tested previously ...

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Polymerization Amplified Detection for Nanoparticle-Based Biosensing

15.10.2014 | Adam J. Gormley; Robert Chapman; Molly M. Stevens, Nano Letters, 2014

Efficient signal amplification processes are key to the design of sensitive assays for biomolecule detection. Here, we describe a new assay platform that takes advantage of both polymerization reactions and the aggregation of nanoparticles to amplify signal. In our design, a cascade is set up in ...

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Correlation of carbon monoxide sensing and catalytic activity of pure and cation doped lanthanum iron oxide nano-crystals

13.10.2014 | Author(s): K.K. Bhargav , S. Ram , Nitin Labhsetwar , S.B. Majumder, Sensors and Actuators B: Chemical, 2014

Publication date: January 2015 Source:Sensors and Actuators B: Chemical, Volume 206 Author(s): K.K. Bhargav , S. Ram , Nitin Labhsetwar , S.B. Majumder For nano-crystalline cobalt (Co) and cobalt/lead (Pb) co-doped lanthanum ferrite (LaFeO3) ceramics, we have investigated the carbon ...

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Nanostructured Co3O4 as a CO gas sensor: Temperature-dependent behavior

13.10.2014 | Author(s): S. Vetter , S. Haffer , T. Wagner , M. Tiemann, Sensors and Actuators B: Chemical, 2014

Publication date: January 2015 Source:Sensors and Actuators B: Chemical, Volume 206 Author(s): S. Vetter , S. Haffer , T. Wagner , M. Tiemann Cobalt oxide spinel (Co3O4) with an ordered nanostructure is used as a resistive gas sensor for carbon monoxide (CO) in low ppm concentrations. ...

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