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1.932 Aktuelle Fachpublikationen zum Thema temperature

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Lanthanides and Actinides: Annual Survey of their Organometallic Chemistry Covering the Year 2013

19.10.2014 | Author(s): Frank T. Edelmann, Coordination Chemistry Reviews, 2014

Publication date: Available online 14 October 2014 Source:Coordination Chemistry Reviews Author(s): Frank T. Edelmann This review summarizes the progress in organo-f-element chemistry during the year 2013. The year 2013 witnessed a significant increase of contributions in the fields of ...

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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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Comparative Study of Experimental and Modeling Autoignition of Cyclohexane, Ethylcyclohexane, and n-Propylcyclohexane

17.10.2014 | Zemin Tian; Yingjia Zhang; Feiyu Yang; Lun Pan; Xue Jiang; Zuohua Huang, Energy & Fuels, 2014

Ignition delay times were measured for cyclohexane, ethylcyclohexane, and n-propylcyclohexane at atmospheric pressure, equivalence ratios of 0.5, 1.0, and 2.0, and temperatures of 1110–1650 K behind reflected shock waves with a fixed fuel concentration of 0.5%. Computational simulations were made ...

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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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Hydrocarbon Addition Reactions during Low-Temperature Autoxidation of Oilsands Bitumen

16.10.2014 | Muhammad N. Siddiquee; Arno de Klerk, Energy & Fuels, 2014

Low-temperature oxidation of bitumen with air in the temperature range of 130–160 °C was investigated. Of particular interest were the addition reactions taking place during oxidation, which contributed to the observed increase in viscosity of oxidized bitumen. During the autoxidation of bitumen, ...

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Improved Kinetic Model of the Low-Temperature Oxidation of n-Heptane

16.10.2014 | Matteo Pelucchi; Mattia Bissoli; Carlo Cavallotti; Alberto Cuoci; Tiziano Faravelli; Alessio Frassoldati; Eliseo Ran ..., Energy & Fuels, 2014

The low- and high-temperature oxidation mechanisms of n-heptane have been extensively studied in recent and past literature because of its importance as a primary reference fuel. Recent advanced analytical methods allowed for the identification of several intermediate oxygenated species at very ...

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Enhancing Antioxidant Activity of Sesamol at Frying Temperature by Addition of Additives through Reducing Volatility*

14.10.2014 | Hong‐Sik Hwang, Jill K. Winkler‐Moser, Karl Vermillion, Sean X. Liu, Journal of Food Science, 2014

Abstract Additives were evaluated to investigate their effects on volatility of sesamol at frying temperature with the hypothesis that the interaction between an additive and sesamol would reduce sesamol volatility. Twenty‐two additive : sesamol combinations were examined by thermogravimetric ...

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In Situ Thermally Induced Attenuation in Sapphire Optical Fibers Heated to 1400°C

14.10.2014 | Christian M. Petrie, Thomas E. Blue, Journal of the American Ceramic Society, 2014

The purpose of this work was to determine the spectral loss of sapphire optical fibers as a function of temperature to determine the suitability of using sapphire optical fiber‐based instrumentation in extremely high‐temperature applications such as coal gasifers, or potentially in advanced ...

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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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