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5.473 Aktuelle Fachpublikationen zum Thema temperature

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Reversible switching of amphiphilic self-assemblies between micelles and microemulsions by a thermal stimulus

01.07.2015 | Bin Dong; Xueqing Xing; Rui Wang; Bing Wang; Xiaoyan Zhou; Chang Wang; Li Yu; Zhonghua Wu; Yanan Gao, Chemical Communication, 2015

The ionic liquid (IL), tetrabutylphosphonium trifluoroacetate ([P4444][CF3COO]), showed a low critical solution temperature (LCST)-type phase transition in water. Using this temperature-sensitive IL and the Triton X-100/H2O system, the reversible transformation between micelles and microemulsions ...


Alloy 800H under supercritical water conditions: a flow reactor study of corrosion and hydrogen evolution

26.06.2015 | K. I. Choudhry, I. M. Svishchev, L. Orlovskaya, Materials and Corrosion, 2015

Hydrogen evolution and corrosion rates for an Alloy 800H flow‐through reactor operating under supercritical water conditions were determined. Experiments were performed in the temperature range of 650 to 750 °C both with deoxygenated feed water, with an O2 concentration of less than 10 μg L−1 ...


Semicontinuous Emulsion Copolymerization of Vinyl acetate and Butyl acrylate with Nonionic Surfactants (Triton X Series)

25.06.2015 | Gülsüm Karacetin, Ayfer Sarac, Macromolecular Symposia, 2015

Summary In this study, the copolymerization of vinyl acetate (VAc) and butyl acrylate (BuA) in water semicontinuous emulsions made with the nonionic surfactants, Triton Xs, was studied as a function number of ethylene oxide (EO, X) and their concentrations. The copolymerization of VAc and BuA ...


ChemInform Abstract: A Novel Green Protocol for Ligand Free Suzuki—Miyaura Cross‐Coupling Reactions in WEB at Room Temperature.

25.06.2015 | Preeti Rekha Boruah, Abdul Aziz Ali, Bishwajit Saikia, Diganta Sarma, ChemInform, 2015

Abstract Water extract of banana peel ash (WEB) is employed in ligand‐free Suzuki—Miyaura cross‐coupling reactions.


Heat Processing of Blueberries and Its Effect on Their Physicochemical and Bioactive Properties

25.06.2015 | Priscilla M. Reque, Eduardo V. Steckert, Fernanda T. Santos, Daiane Danelli, André Jablonski, Simone H. Flôres, Rosa ..., Journal of Food Process Engineering, 2015

Abstract The current study aimed to evaluate the dehydration process of blueberry fruits at temperatures of 70, 80 and 90C and its effect on their physicochemical and bioactive properties. The values for moisture content and water activity (aw) were still high for dehydrated fruits, although ...


IJMS, Vol. 16, Pages 14409-14427: Shewanella sp. O23S as a Driving Agent of a System Utilizing Dissimilatory Arsenate-Reducing Bacteria Responsible for Self-Cleaning of Water Contaminated with Arsenic

25.06.2015 | Drewniak, Lukasz ; Stasiuk, Robert ; Uhrynowski, Witold ; Sklodowska, Aleksandra, International Journal of Molecular Sciences, 2015

The purpose of this study was a detailed characterization of Shewanella sp. O23S, a strain involved in arsenic transformation in ancient gold mine waters contaminated with arsenic and other heavy metals. Physiological analysis of Shewanella sp. O23S showed that it is a facultative anaerobe, ...


Spatial and Orientational Structure of the Hydration Shell of Benzene in Sub- and Supercritical Water

25.06.2015 | Ashu Choudhary; Amalendu Chandra, Journal of Physical Chemistry B, 2015

The spatial and orientational structure of the solvation shell of benzene in sub- and supercritical water are investigated by means of molecular dynamics simulations. The present study reveals different local organization of water molecules at different parts of the solute. The π-hydrogen-bonding ...


Solubility of 2,5-Di-tert-butylhydroquinone and Process Design for Its Purification Using Crystallization

25.06.2015 | Yang Zhang; Jing Jing Liu; Lei Zhang; Xue Zhong Wang, Journal of Chemical & Engineering Data, 2015

The solubility of 2,5-di-tert-butylhydroquinone (DTBHQ) in acetone, ethyl acetate, methanol, and the mixtures of ethanol and water was measured and correlated in the temperature range between 278.95 K and 346.15 K. It was found that the solubility in acetone increases more rapidly with increasing ...


Platinum Nanoparticles Stabilized by Glycerodendrimers: Synthesis and Application to the Hydrogenation of α,β‐Unsaturated Ketones under Mild Conditions

24.06.2015 | Bérengère Menot, Lionel Salmon, Sandrine Bouquillon, European Journal of Inorganic Chemistry, 2015

Abstract Air‐stable platinum nanoparticles stabilized by glycerodendrimers were prepared in water and analyzed by TEM. These platinum nanoparticles showed good catalytic activity for the reduction of α,β‐unsaturated ketones to saturated ketones at room temperature in water or in water/THF ...


Pd(OAc)2 in WERSA: a novel green catalytic system for Suzuki–Miyaura cross-coupling reactions at room temperature

24.06.2015 | Preeti Rekha Boruah; Abdul Aziz Ali; Mitali Chetia; Bishwajit Saikia; Diganta Sarma, Chemical Communication, 2015

A recyclable/reusable Pd(OAc)2 catalysed Suzuki–Miyaura cross-coupling reaction condition in neat “Water Extract of Rice Straw Ash” (WERSA) at room temperature was developed. This is a ligand/base/promoter/additive/organic media free protocol.


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