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28.339 Aktuelle Fachpublikationen zum Thema temperature

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A general framework for the assessment of solar fuels technologies

15.10.2014 | Jeffrey A Herron; Jiyong Kim; Aniruddha Upadhye; George Huber; Christos T Maravelias, Energy & Environmental Science, 2014

The conversion of carbon dioxide and water into fuels in a solar refinery presents a potential solution for reducing greenhouse gas emissions, while providing a sustainable source of fuels and chemicals. Towards realizing such a solar refinery, there are many technological advances that must be ...

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Alkali metal salts of formazanate ligands: diverse coordination modes as a result of the nitrogen-rich [NNCNN] ligand backbone

15.10.2014 | Edwin Otten; Raquel Travieso-Puente; Mu-Chieh Chang, Dalton Transactions, 2014

Alkali metal salts of redox-active formazanate ligands were prepared, and their structures in the solid-state and solution determined. The nitrogen-rich [NNCNN] backbone of formazanates results in a varied coordination chemistry, with both the internal and terminal nitrogen atoms available for ...

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Conversion of wheat straw into formic acid in NaVO3–H2SO4 aqueous solution with molecular oxygen

15.10.2014 | Muge Niu; Yucui Hou; Shuhang Ren; Weize Wu; Kenneth N. Marsh, Green Chemistry, 2014

Formic acid (FA) is an important material widely used in the chemical industry and in processes involved in energy storage and transformation. In this work, production of FA from wheat straw, an abundant lignocellulosic biomass, in NaVO3–H2SO4 aqueous solution with molecular oxygen (O2) was ...

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Oligopeptide-heavy metal interaction monitoring by hybrid gold nanoparticles based assay.

15.10.2014 | jane politi; JOLANDA SPADAVECCHIA; Mario Iodice; Luca De Stefano, Analyst, 2014

Phytochelatins are small peptides that can be found in several organisms, which uses these oligopeptides to handle heavy metal elements. Here, we report a method of monitoring interactions between lead (II) ions in aqueous solution and Phytochelatin 6 oligopeptides bioconjugated onto pegylated ...

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Lithium-Sulfur Batteries — the solution is in the electrolyte, but is the electrolyte a solution?

15.10.2014 | Marzieh Barghamadi; Adam S Best; Anand Bhatt; Anthony Frank Hollenkamp; Mustafa M Musameh; Robert Rees; Thomas Ruether, Energy & Environmental Science, 2014

At first glance, the combination of the lightest, most electropositive metal (lithium) with a safe, abundant (and reasonably light) non-metal (sulfur) makes good sense as a prospective battery. However, while the lithium-sulfur battery offers a very high theoretical specific energy (~2600 Wh ...

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The Copper(II)-Phytate-Terpyridine Ternary System: The First Crystal Structures Showing the Interaction of Phytate with bivalent metal and ammonium cations

15.10.2014 | Nicolás Veiga; Julia Torres; Carla Bazzicalupi; Antonio Bianchi; Carlos Kremer, Chemical Communication, 2014

Phytate, an abundant molecule in eukaryotic cells, interacts strongly with inorganic cations and polyamines. This interaction is essential in determining the possible functions of this biomolecule. We present here the first solution and crystallographic study on the formation of phytate complexes ...

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Organic Mixed Valency in Quadruple Hydrogen-bonded Triarylamine Dimers Bearing Ureido Pyrimidinedione Moieties

15.10.2014 | Keishiro Tahara; Tetsufumi Nakakita; Shohei Katao; Jun-ichi Kikuchi, Chemical Communication, 2014

Triarylamine derivatives bearing an ureido pyrimidinedione moiety were synthesised and formed dimers in the solid state and solution through quadruple hydrogen-bonds. These bonding interactions stabilized the mixed-valence states of the tri-arylamine dimers without any electronic coupling between ...

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Unique multiple soluble–insoluble phase transitions in aqueous two-phase copolymerization of acrylamide and a weakly charged comonomer

15.10.2014 | Kuanxiang Shang; Guorong Shan; Pengju Pan, Soft Matter, 2014

A unique phenomenon of multiple soluble–insoluble phase transitions was found in the two-phase copolymerization of acrylamide (AM) and a weakly charged comonomer, N,N-dimethylaminoethyl methacrylate (DMAEMA), in the aqueous solution of poly(ethylene glycol) (PEG). As the DMAEMA molar fraction ...

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Speciation and structure of lead(II) in hyper-alkaline aqueous solution

15.10.2014 | Éva Gabriella Bajnóczi; Istvan Palinko; Tamás Körtvélyesi; Szabolcs Bálint; Imre Bakó; Pal Sipos; Ingmar Persson, Dalton Transactions, 2014

The identity of the predominating lead(II) species in hyper-alkaline aqueous solution has been determined by Raman spectroscopy, and ab initio quantum chemical calculations, and its structure has been determined by EXAFS. The observed and calculated Raman spectra for the [Pb(OH)3]− complex are in ...

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Speciation and structure of tin(II) in hyper-alkaline aqueous solution

15.10.2014 | Éva Gabriella Bajnóczi; Eszter Czeglédi; Ernő Kuzmann; Zoltan Homonnay; Szabolcs Bálint; Gyorgy Dombi; Peter Forgo; ..., Dalton Transactions, 2014

The identity of the predominating tin(II)-hydroxide complex formed in hyper-alkaline aqueous solution (0.2  CNaOH  12 mol⋅dm-3) has been determined by potentiomet¬ric titrations, Raman, Mössbauer and XANES spectroscopy, supplemented by quantum chemical calculations. Thermodyna¬mic studies using ...

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