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1.887 Aktuelle Fachpublikationen zum Thema temperature

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Ce4Ag3Ge4O0.5 – chains of oxygen-centered [OCe2Ce2/2] tetrahedra embedded in a [CeAg3Ge4] intermetallic matrix

18.09.2013 | Gunter Heymann; Jan F. Riecken; Dirk Johrendt; Sudhindra Rayaprol; Rainer Pöttgen; Hubert Huppertz, Dalton Transactions, 2013

The oxidation of an intermetallic phase under high-pressure/high-temperature conditions led to the synthesis of Ce4Ag3Ge4O0.5 exhibiting [OCe2Ce2/2] tetrahedral chains, in which the oxygen atoms statistically occupy the tetrahedral centres. Starting from a 1 [ ] : [ ] 1 [ ] : [ ] 1 CeAgGe ...

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Coupling between proton binding and redox potential in electrochemically active macromolecules. The example of Polyaniline

16.09.2013 | Author(s): Waldemar A. Marmisollé , M. Inés Florit , Dionisio Posadas, Journal of Electroanalytical Chemistry, 2013

Publication date: 15 October 2013 Source:Journal of Electroanalytical Chemistry, Volume 707 Author(s): Waldemar A. Marmisollé , M. Inés Florit , Dionisio Posadas In this work it is investigated the coupling between the redox potential and the extent of proton binding in electrochemically ...

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Facile Rearrangement of 3-Oxoalkyl Radicals is Evident in Low-Temperature Gas-Phase Oxidation of Ketones

13.09.2013 | Adam M. Scheer; Oliver Welz; Darryl Y. Sasaki; David L. Osborn; Craig A. Taatjes, Journal of the American Chemical Society, 2013

The pulsed photolytic chlorine-initiated oxidation of methyl-tert-butyl ketone (MTbuK), di-tert-butyl ketone (DTbuK), and a series of partially deuterated diethyl ketones (DEK) is studied in the gas phase at 8 Torr and 550–650 K. Products are monitored as a function of reaction time, mass, and ...

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Combination of Plasma with a Honeycomb-Structured Catalyst for Automobile Exhaust Treatment

13.09.2013 | Woo Seok Kang; Dae Hoon Lee; Jae-Ok Lee; Min Hur; Young-Hoon Song, Environmental Science & Technology, 2013

To activate a catalyst efficiently at low temperature by plasma for environmental control, we developed a hybrid reactor that combines plasma with a honeycomb-structured catalyst in a practical manner. The reactor developed generated stable cold plasma at atmospheric pressure because of the ...

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Size Controlled Synthesis of Silicon Nanocrystals Using Cationic Surfactant Templates

11.09.2013 | Keith Linehan, Hugh Doyle, Small, 2013

Alkyl‐terminated silicon nanocrystals (Si NCs) are synthesized at room temperature by hydride reduction of silicon tetrachloride (SiCl4) within inverse micelles. Highly monodisperse Si nanocrystals with average diameters ranging from 2 to 6 nm are produced by variation of the cationic quaternary ...

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Investigation about Temperature Effects on Soot Mechanisms Using a Phenomenological Soot Model of Real Biodiesel

11.09.2013 | Xiaojie Bi; Xinqi Qiao; Chia-fon F. Lee, Energy & Fuels, 2013

A phenomenological soot model of real biodiesel was proposed to investigate the effects of initial ambient temperatures on combustion and soot emission characteristics of soybean biodiesel. Validation experiments were conducted in an optically accessible constant volume chamber under four ...

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Oxovanadium(IV) Schiff Base Complex Immobilized on CPS Microspheres as Heterogeneous Catalyst for Aerobic Selective Oxidation of Ethyl benzene to Acetophenone

09.09.2013 | Author(s): Baojiao Gao , Yanbin Li , Nan Shi, Reactive and Functional Polymers, 2013

Publication date: Available online 6 September 2013 Source:Reactive and Functional Polymers Author(s): Baojiao Gao , Yanbin Li , Nan Shi In this work, chloromethylated crosslinked polystyrene microspheres (CMCPS microspheres) were used as starting carrier, and a new immobilized bidentate ...

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Ortho-ruthenation of 1-naphthalenyl in 1-naphthaldehyde 4-R-benzoylhydrazones: Ruthenium(III) CNO pincer complexes

09.09.2013 | Author(s): Koppanathi Nagaraju , Samudranil Pal, Journal of Organometallic Chemistry, 2013

Publication date: 15 November 2013 Source:Journal of Organometallic Chemistry, Volumes 745–746 Author(s): Koppanathi Nagaraju , Samudranil Pal In methanol, reactions of [Ru(PPh3)3Cl2], 1-naphthaldehyde 4-R-benzoylhydrazones (H2nabhR, where R=H, Me, OMe, Cl and NO2) and NaOAc in ...

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Catalytic Activation of H2 under Mild Conditions by an [FeFe]-Hydrogenase Model via an Active μ-Hydride Species

06.09.2013 | Ning Wang; Mei Wang; Ying Wang; Dehua Zheng; Hongxian Han; Mårten S. G. Ahlquist; Licheng Sun, Journal of the American Chemical Society, 2013

A [FeFe]-hydrogenase model (1) containing a chelating diphosphine ligand with a pendant amine was readily oxidized by Fc+ (Fc = Cp2Fe) to a FeIIFeI complex ([1]+), which was isolated at room temperature. The structure of [1]+ with a semibridging CO and a vacant apical site was determined by X-ray ...

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Phase Transitions of Polystyrene-b-poly(dimethylsiloxane) in Solvents of Varying Selectivity

06.09.2013 | Ting-Ya Lo; Chia-Cheng Chao; Rong-Ming Ho; Prokopios Georgopanos; Apostolos Avgeropoulos; Edwin L. Thomas, Macromolecules, 2013

A simple method to create a variety of nanostructures via the self-assembly of a single composition silicon-containing block copolymer (BCP) is developed. By using selective solvents for the self-assembly of polystyrene-block-poly(dimethylsiloxane) (PS–PDMS), the phase behavior of intrinsic BCP ...

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