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1.965 Aktuelle Fachpublikationen zum Thema temperature

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Role of Cu species in electrospun CuO-CeO2 nanofibers for total benzene oxidation

18.11.2014 | Yongjin Luo; Kuncan Wang; Yuxian Xu; Xiuyun Wang; Qingrong Qian; Qinghua Chen, New Journal of Chemistry, 2014

CuO-CeO2 nanofibers of relatively high surface (EL-CuCe) has been successfully prepared by electrospinning method and investigated for total benzene oxidation. The improved low-temperature performance of EL-CuCe compared to ST-CuCe (prepared by surfactant-templated method) is attributed to a ...

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Shock Tube Study of Dimethylamine Oxidation

12.11.2014 | Sijie Li, David F. Davidson, Ronald K. Hanson, International Journal of Chemical Kinetics, 2014

ABSTRACT Dimethylamine (DMA) ignition delay times and OH time histories during the oxidation process were investigated behind reflected shock waves. The ignition delay time measurements cover the temperature range of 1181–1498 K, with pressures near 0.9, 1.5, and 2.8 atm, and equivalence ...

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Effect of Rooibos (Aspalathus Linearis) on Growth Control of Clostridium Perfringens and Lipid Oxidation of Ready‐to‐Eat Jokbal (Pig's Trotters)

12.11.2014 | Hee Jin Park, Keun‐Cheol Park, Ki Sun Yoon, Journal of Food Science, 2014

Abstract This study investigated the antimicrobial effects of rooibos (tea extract), potassium lactate (PL) and sodium diacetate (SDA) mixture alone or in combinations on the growth of Clostridium perfringens vegetative cell and spore in ready‐to‐eat (RTE) Jokbal (pig's trotters). Addition of ...

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Oxidation of Alkylbenzenes with Cerium Complexes Containing a Tripodal Oxygen Ligand

12.11.2014 | Xiao‐Yi Yi, Guo‐Cang Wang, Ho‐Fai Ip, Wai‐Yeung Wong, Lizhuang Chen, Herman H. ‐Y. Sung, Ian D. Williams, Wa‐Hung Leung, European Journal of Inorganic Chemistry, 2014

Abstract The treatment of [Ce(LOEt)2(NO3)2] (LOEt– = [Co(η5‐C5H5){P(O)(OEt)2}3]–) with KMnO4 in water afforded a diamagnetic purple solid 1, which is tentatively formulated as a CeIV permanganate complex, “[Ce(LOEt)2(MnO4)2]”. The ZrIV analogue, [Zr(LOEt)2(MnO4)2] (2), has been prepared ...

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Molecules, Vol. 19, Pages 18399-18413: Thermal Reactivity of Neutral and Oxidized Ferrocenyl-Substituted Enediynes

12.11.2014 | Cinar, Mehmet Emin; Morbach, Guido ; Schmittel, Michael, Molecules, 2014

The coupling of two equivalents of ethynylferrocene (2) with one equivalent of 1,2-diiodocyclohexene (1) and 1,2-diiodobenzene (4) using Sonogashira cross-coupling conditions led to 1,2-bis(ferrocenylethynyl)cyclohexene (3) and 1,2-bis(ferrocenylethy­nyl)benzene (5), respectively. At high ...

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The rapid synthesis of oxazolines and their heterogeneous oxidation to oxazoles under flow conditions

11.11.2014 | Steffen Glöckner; Duc N. Tran; Richard J. Ingham; Sabine Fenner; Zoe E. Wilson; Claudio Battilocchio; Steven V. Ley, Organic & Biomolecular Chemistry, 2014

A rapid flow synthesis of oxazolines and their oxidation to the corresponding oxazoles is reported. The oxazolines are prepared at room temperature in a stereospecific manner, with inversion of stereochemistry, from β-hydroxy amides using Deoxo-Fluor®. The corresponding oxazoles can then be ...

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Oxidative activation of dihydropyridine amides to reactive acyl donors

11.11.2014 | Erik Daa Funder; Julie B. Trads; Kurt V. Gothelf, Organic & Biomolecular Chemistry, 2014

Amides of 1,4-dihydropyridine (DHP) are activated by oxidation for acyl transfer to amines, alcohols and thiols. In the reduced form the DHP amide is stable towards reaction with amines at room temperature. However, upon oxidation with DDQ the acyl donor is activated via a proposed pyridinium ...

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Using CHETAH to estimate lower flammable limit, minimum ignition energy, and other flammability parameters

08.11.2014 | Laurence G. Britton, Benjamin Keith Harrison, Process Safety Progress, 2014

Britton discovered that with increased “net heat of oxidation” (ΔHox), the maximum flame temperatures of CH and CHO fuels in air increase linearly while flame temperatures at the lower flammable limit (LFL) decrease linearly. Maximum flame temperature is a major factor determining the combustion ...

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Stereo‐ and Regioselective Phyllobilane Oxidation in Leaf Homogenates of the Peace Lily (Spathiphyllum wallisii): Hypothetical Endogenous Path to Yellow Chlorophyll Catabolites

07.11.2014 | Clemens Vergeiner, Markus Ulrich, Chengjie Li, Xiujun Liu, Thomas Müller, Bernhard Kräutler, Chemistry - A European Journal, 2014

Abstract In senescent leaves, chlorophyll typically is broken down to colorless and essentially photo‐inactive phyllobilanes, which are linear tetrapyrroles classified as “nonfluorescent” chlorophyll catabolites (NCCs) and dioxobilane‐type NCCs (DNCCs). In homogenates of senescent leaves of ...

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Stereo‐ and Regioselective Phyllobilane Oxidation in Leaf Homogenates of the Peace Lily (Spathiphyllum wallisii): Hypothetical Endogenous Path to Yellow Chlorophyll Catabolites

06.11.2014 | Clemens Vergeiner, Markus Ulrich, Chengjie Li, Xiujun Liu, Thomas Müller, Bernhard Kräutler, Chemistry - A European Journal, 2014

Abstract In senescent leaves, chlorophyll typically is broken down to colorless and essentially photo‐inactive phyllobilanes, which are linear tetrapyrroles classified as “nonfluorescent” chlorophyll catabolites (NCCs) and dioxobilane‐type NCCs (DNCCs). In homogenates of senescent leaves of ...

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