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2.188 Aktuelle Fachpublikationen zum Thema temperature

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Molecular Structures of Fluid Phosphatidylethanolamine Bilayers Obtained from Simulation-to-Experiment Comparisons and Experimental Scattering Density Profiles

12.12.2014 | Norbert Kučerka; Brad van Oosten; Jianjun Pan; Frederick A. Heberle; Thad A. Harroun; John Katsaras, Journal of Physical Chemistry B, 2014

Following our previous efforts in determining the structures of commonly used PC, PG, and PS bilayers, we continue our studies of fully hydrated, fluid phase PE bilayers. The newly designed parsing scheme for PE bilayers was based on extensive MD simulations, and is utilized in the SDP analysis ...

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Effect of Hydrogen-to-Methane Concentration Ratio on the Phase Equilibria of Quaternary Hydrate Systems

12.12.2014 | M. Naveed Khan; Laura J. Rovetto; Cor J. Peters; E. Dendy Sloan; Amadeu K. Sum; Carolyn A. Koh, Journal of Chemical & Engineering Data, 2014

Clathrate hydrates of hydrogen are of specific interest due to their potential ability to store molecular hydrogen. In particular, structure H (sH) hydrate has a higher theoretical storage capacity in comparison with the other two more common hydrate structures (sI and sII). This paper ...

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Role of Hydrogen Abstraction Acetylene Addition Mechanisms in the Formation of Chlorinated Naphthalenes. 2. Kinetic Modeling and the Detailed Mechanism of Ring Closure

12.12.2014 | Grant J. McIntosh; Douglas K. Russell, Journal of Physical Chemistry A, 2014

The dominant formation mechanisms of chlorinated phenylacetylenes, naphthalenes, and phenylvinylacetylenes in relatively low pressure and temperature (∼40 Torr and 1000 K) pyrolysis systems are explored. Mechanism elucidation is achieved through a combination of theoretical and experimental ...

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Quantitative Evaluation on Activated Property-Tunable Bulk Liquid Water with Reduced Hydrogen Bonds Using Deconvoluted Raman Spectroscopy

12.12.2014 | Hsiao-Chien Chen; Fu-Der Mai; Kuang-Hsuan Yang; Liang-Yih Chen; Chih-Ping Yang; Yu-Chuan Liu, Analytical Chemistry, 2014

Interesting properties of water with distinguishable hydrogen-bonding structure on interfacial phase or in confined environment have drawn wide attentions. However, these unique properties of water are only found within the interfacial phase and confined environment, thus, their applications are ...

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Catalytic reforming of acetic acid as a model compound of bio‐oil for hydrogen production over Ni‐CeO2‐MgO/olivine catalysts

11.12.2014 | Xingmin Xu, Changsen Zhang, Yonggang Liu, Yunpu Zhai, Ruiqin Zhang, Xiaoyan Tang, Environmental Progress, 2014

Olivine was used as a support with CeO2/MgO as promoters to synthesize a series of Ni‐based catalysts by wet impregnation for reforming acetic acid as a model compound of bio‐oil for H2 production. These catalysts were characterized by X‐ray diffraction, N2 physisorption, and scanning electron ...

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Investigation of the Enantiomerization Barriers of the Phthalimidone Derivatives EM12 and Lenalidomide by Dynamic Electrokinetic Chromatography

11.12.2014 | Sarah Walz, Sylvia Weis, Mareike Franz, Frank Rominger, Oliver Trapp, ELECTROPHORESIS, 2014

The phthalimidone derivatives EM12 and lenalidomide, which are both structurally related to thalidomide, are highly interesting drugs and very recently lenalidomide attracted great attention as anti‐tumor and immune‐modulating drug [1] in the therapy for multiple myeloma [1]. EM12 and ...

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Unravelling the Dependence of Hydrogen Oxidation Kinetics on the Size of Pt Nanoparticles by in Operando Nanoplasmonic Temperature Sensing

11.12.2014 | Kristina Wettergren; Anders Hellman; Filippo Cavalca; Vladimir P. Zhdanov; Christoph Langhammer, Nano Letters, 2014

We use a noninvasive nanoscale optical-temperature measurement method based on localized surface plasmon resonance to investigate the particle size-dependence of the hydrogen oxidation reaction kinetics on model supported Pt nanocatalysts at atmospheric pressure in operando. With decreasing ...

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Quantification of Chemical States, Dissociation Constants and Contents of Oxygen-containing Groups on the Surface of Biochars Produced at Different Temperatures

11.12.2014 | Zaiming Chen; Xin Xiao; Baoliang Chen; Lizhong Zhu, Environmental Science & Technology, 2014

Surface functional groups such as carboxyl play a vital role in the environmental applications of biochar as a soil amendment. However, the quantification of oxygen-containing groups on a biochar surface still lacks systematical investigation. In this paper, we report an integrated method ...

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Hydrogen Production by the Water–Gas Shift Reaction Using an Atmospheric Steam Plasma Torch System with a Reverse Vortex Reactor

10.12.2014 | Suk H. Ma; Dae H. Choi; Se M. Chun; Sang S. Yang; Yong C. Hong, Energy & Fuels, 2014

The water–gas shift reaction (WGSR) using a pure steam plasma with CO as the reactant was accomplished in this study. The steam plasma generated by microwaves at an atmospheric pressure provides highly active species and a high-temperature plasma flame at about 6000 K, which enhances the chemical ...

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Hydrogen atom transfer reactions in thiophenol: photogeneration of two new thione isomers

09.12.2014 | Igor Reva; Maciej J. Nowak; Leszek Lapinski; Rui Fausto, Physical Chemistry Chemical Physics, 2014

Photoisomerization reactions of monomeric thiophenol have been investigated for the compound isolated in low-temperature argon matrices. The initial thiophenol population consists exclusively of the thermodynamically most stable thiol form. Phototransformations were induced by irradiation of the ...

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