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2.361 Aktuelle Fachpublikationen zum Thema temperature

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Room‐Temperature Alkynylation of Phosphine Oxides with Copper Acetylides: Practical Synthesis of Alkynylphosphine Oxides (Eur. J. Org. Chem. 4/2016)

05.02.2016 | Diego A. Alonso, Alejandro Baeza, Rafael Chinchilla, Gabriela Guillena, Isidro M. Pastor, Diego J. Ramón, European Journal of Organic Chemistry, 2016

The cover picture shows the alkynylation of phosphine oxides with copper acetylides. These polymeric, rock‐stable and unreactive reagents can be readily activated by coordination with simple ligands and oxidation with molecular oxygen. This activation enables the in situ generation of highly ...

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Antimicrobial carbon materials incorporating copper nano‐crystallites and their PLA composites

05.02.2016 | Anna Ilnicka, Mariusz Walczyk, Jerzy P. Lukaszewicz, Katarzyna Janczak, Rafal Malinowski, Journal of Applied Polymer Science, 2016

ABSTRACT In the first stage, carbon materials were manufactured from chitin and chitosan as the main precursor. Chitin and chitosan were impregnated with Cu2+ ions. Using heat treatment, the organic matter (biopolymers) was transformed into a porous carbon matrix, while copper ions were ...

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Lithium–Iron Fluoride Battery with In Situ Surface Protection

05.02.2016 | Wentian Gu, Oleg Borodin, Bogdan Zdyrko, Huan‐Ting Lin, Hyea Kim, Naoki Nitta, Jiaxin Huang, Alexandre Magasinski, Z ..., Advanced Functional Materials, 2016

Lithium–metal fluoride (MF) batteries offer the highest theoretical energy density, exceeding that of the sulfur–lithium cells. However, conversion‐type MF cathodes suffer from high resistance, small capacity utilization at room temperature, irreversible structural changes, and rapid capacity ...

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Ultra-deep Desulfurization of Gasoline with CuW/TiO2–GO through Photocatalytic Oxidation

05.02.2016 | Shuzhen Li; Nchare Mominou; Zhenwei Wang; Luoxin Liu; Lei Wang, Energy & Fuels, 2016

Graphene oxide (GO) was co-modified with copper, tungsten, and titanium oxide. A photocatalytic reactor was used to investigate the performance of the resulting catalysts in the ultra-deep desulfurization of fluid catalytic cracking (FCC) gasoline. The resultant samples were characterized using ...

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Effect of Base-Pairing Partner on the Thermodynamic Stability of the Diastereomeric Spiroiminodihydantoin Lesion

05.02.2016 | Brian Gruessner; Megana Dwarakanath; Elizabeth Stewart; Yoon Bae; Elizabeth R. Jamieson, Chemical Research in Toxicology, 2016

Oxidation of guanine by reactive oxygen species and high valent metals produces damaging DNA base lesions like 8-oxo-7,8-dihydroguanine (8-oxoG). 8-oxoG can be further oxidized to form the spiroiminodihydantoin (Sp) lesion, which is even more mutagenic. DNA polymerases preferentially incorporate ...

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Structural, Computational, and Spectroscopic Investigation of [Pd(κ3-1,1′-bis(di-tert-butylphosphino)ferrocenediyl)X]+ (X = Cl, Br, I) Compounds

04.02.2016 | Brittany L. Blass; Raúl Hernández Sánchez; Victoria A. Decker; Michael J. Robinson; Nicholas A. Piro; W. Scott Kasse ..., Organometallics, 2016

The reaction of [Pd(dtbpf)Cl2] (dtbpf = 1,1′-bis(di-tert-butylphosphino)ferrocene) with sodium bromide yields [Pd(dtbpf)Br][Br], which displays an interaction between the iron and palladium atoms. The structure of this compound has been obtained and is compared to those of the previously reported ...

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Distribution of Vanadium, Nickel, and Other Trace Metals in Soot and Char from Asphaltene Pyrolysis and Gasification

04.02.2016 | Vinoj Kurian; Rajender Gupta, Energy & Fuels, 2016

Vanadium (V) and nickel (Ni) are the most abundant and troublesome metals present in oil sands. During upgrading of the oil sand bitumen, these metals become concentrated in the heavier fraction asphaltenes. Any thermochemical conversion of asphaltene causes the release of these trace metals, and ...

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MOCVD growth of ZnO nanowires on Ni‐W metallic substrates

03.02.2016 | Gaëlle Amiri, Mohamed Halaoui, Diana Nathalie Montenegro, Pierre Galtier, Vincent Sallet, physica status solidi (c), 2016

Abstract Here we investigate the possibility to grow ZnO nanowires on (100) textured Ni‐W substrates by MOCVD at 850 °C. Due to the oxidation of Ni, direct growth of ZnO nanowires on those metallic substrates was not achieved whereas it was easily obtained on sapphire in the same conditions. ...

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Thermoelectric Polymers and their Elastic Aerogels

02.02.2016 | Zia Ullah Khan, Jesper Edberg, Mahiar Max Hamedi, Roger Gabrielsson, Hjalmar Granberg, Lars Wågberg, Isak Engquist, ..., Advanced Materials, 2016

Electronically conducting polymers constitute an emerging class of materials for novel electronics, such as printed electronics and flexible electronics. Their properties have been further diversified to introduce elasticity, which has opened new possibility for “stretchable” electronics. Recent ...

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Physico‐chemical, Functional and Pasting Properties of Native and Chemically Modified Water Yam (Dioscorea alata) Starch in the Production of Starch‐Based Yoghurt

01.02.2016 | Olugbenga Olufemi Awolu, Sunday John Olofinlae, Starch - Stärke, 2016

Water yam starch was isolated and subjected to chemical modification by acetylation, oxidation and acid thinning. Chemical composition, functional properties and pasting characteristics of native and modified starches were determined using standard methods. Chemical modification reduced the ...

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