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2.689 Aktuelle Fachpublikationen zum Thema temperature

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FD Electrolysis: Syngas Production by High Temperature Steam/CO2 Coelectrolysis Using Solid Oxide Electrolysis Cells

01.04.2015 | Xinbing Chen; Chengzhi Guan; Xiao Guoping; Xianlong Du; Jian-Qiang Wang, Faraday Discussions, 2015

High temperature (HT) steam/CO2 coelectrolysis with solid oxide electrolysis cells (SOECs) using the heat and power from clean energies is an important alternative for syngas production without fossil fuel consumptions and greenhouse gas emissions. Herein, reaction characteristics and outlet ...

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Advanced Structural Analysis of Nanoporous Materials by Thermal Response Measurements

25.03.2015 | Martin Oschatz; Matthias Leistner; Winfried Nickel; Stefan Kaskel, Langmuir, 2015

Thermal response measurements based on optical adsorption calorimetry are presented as a versatile tool for the time-saving and profound characterization of the pore structure of porous carbon-based materials. This technique measures the time-resolved temperature change of an adsorbent during ...

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Microwave-Assisted Hydrothermal Synthesis of Cu/Cu2O Hollow Spheres with Enhanced Photocatalytic and Gas Sensing Activities at Room Temperature

25.03.2015 | Xinwei Zou; Huiqing Fan; Yuming Tian; Mingang Zhang; Xiaoyan Yan, Dalton Transactions, 2015

Cu/Cu2O nano-heterostructure hollow spheres with a submicron diameter (200~500 nm) were prepared by a microwave-assisted hydrothermal method using Cu(OAc)2•H2O, PVP and ascorbic acid solution as the precursor. The morphology of the products could evolve as the hydrothermal time from solid spheres ...

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Gas-Phase Kinetics of the N + C2N Reaction at Low Temperature

20.03.2015 | James W. Stubbing; Gianmarco Vanuzzo; Audrey Moudens; Jean-Christophe Loison; Kevin M. Hickson, Journal of Physical Chemistry A, 2015

The rate of the gas-phase N(4S) + C2N(X∼2Πi) reaction has been measured in a continuous supersonic flow reactor down to 54 K through the relative-rate method using the N(4S) + OH(X2Π) → H(2S) + NO(X2Π) reaction as a reference. The microwave discharge technique was employed to produce high ...

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Evaluation of Ultrahigh-Performance Supercritical Fluid Chromatography–Mass Spectrometry as an Alternative Approach for the Analysis of Fatty Acid Methyl Esters in Aviation Turbine Fuel

20.03.2015 | Waraporn Ratsameepakai; Julie M. Herniman; Tim J. Jenkins; G. John Langley, Energy & Fuels, 2015

The current international reference method (IP585/10) for the determination of rapeseed methyl ester (RME) in jet fuel [aviation turbine fuel (AVTUR), current specifications U.S. ASTM 1655 and DEF STAN 91-91] uses gas chromatography–mass spectrometry (GC–MS). The fuel matrix requirements demand ...

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Materials, Vol. 8, Pages 1249-1263: Gas-Phase Deposition of Ultrathin Aluminium Oxide Films on Nanoparticles at Ambient Conditions

19.03.2015 | Valdesueiro, David ; Meesters, Gabrie M. H.; Kreutzer, Michiel T.; van Ommen, J. Ruud, Materials, 2015

We have deposited aluminium oxide films by atomic layer deposition on titanium oxide nanoparticles in a fluidized bed reactor at 27 ± 3 °C and atmospheric pressure. Working at room temperature allows coating heat-sensitive materials, while working at atmospheric pressure would simplify the ...

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On the role of gold nanoparticles in the selective photooxidation of 2-propanol over Au/TiO2

18.03.2015 | Alexander Lüken; Martin Muhler; Jennifer Strunk, Physical Chemistry Chemical Physics, 2015

The gas-phase photooxidation of 2-propanol over Au/TiO2 and TiO2 was studied by infrared spectroscopy and online mass spectrometry to get insight into the mechanism and the role of gold. The presence of O2 was found to be essential for the formation of acetone under UV irradiation at room ...

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New formula for calculating time to ignition of semi‐infinite solids

18.03.2015 | Ulf Wickström, Fire and Materials, 2015

Summary An analytical closed form formula is presented for explicitly calculating time to reach ignition temperature of semi‐infinite solids exposed to constant incident radiation and gas temperature as for example in the cone calorimeter. The non‐linear boundary condition due to the emitted ...

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Gas Chromatography–Mass Spectrometry Method Optimized Using Response Surface Modeling for the Quantitation of Fungal Off-Flavors in Grapes and Wine

17.03.2015 | Navideh Sadoughi; Leigh M. Schmidtke; Guillaume Antalick; John W. Blackman; Christopher C. Steel, Journal of Agricultural and Food Chemistry, 2015

An optimized method for the quantitation of volatile compounds responsible for off-aromas, such as earthy odors, found in wine and grapes was developed. The method involved a fast and simple headspace solid-phase microextraction–gas chromatography–mass spectrometry (HS-SPME–GC–MS) for ...

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PdO/SnO2 hollow nanospheres for carbon monoxide detection

16.03.2015 | Chengnan Wang, Pei Zhao, Shantang Liu, physica status solidi (a), 2015

SnO2 hollow nanospheres (SnO2 HNs) and different amount of PdO‐doped SnO2 HNs were successfully synthesized and applied to fabricate sensors for CO detection. The synthesized SnO2 and PdO/SnO2 materials have tetragonal and HN structure with a diameter of ∼180 nm, and the existence of Pd element ...

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