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6.536 Aktuelle Fachpublikationen zum Thema temperature

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Intrinsic Kinetics of Esterification of Fatty Acids Catalyzed by Supported Ionic Liquid Catalysts

02.07.2015 | Parminder Kaur Khabinder Singh Heer, Deepak D. Chabukswar, Vilas G. Gaikar, Chemical Engineering & Technology, 2015

Abstract Esterification of palm fatty acid distillate with methanol was investigated for intrinsic kinetics and regarding the effect of catalyst loading, temperature, and methanol to feed molar ratio using ionic liquid acidic catalysts covalently attached to a polystyrene support. The kinetic ...

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ChemInform Abstract: Sulfonamide Formation from Sodium Sulfinates and Amines or Ammonia under Metal‐Free Conditions at Ambient Temperature.

02.07.2015 | Kai Yang, Miaolin Ke, Yuanguang Lin, Qiuling Song, ChemInform, 2015

Abstract A metal‐, base‐, ligand‐, and additive‐free protocol for the efficient construction of a variety of sulfonamides is developed.

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Formation of ZnSe and ZnS nanostructures from hybrid organic‐inorganic precursors of the type ZnSe(m‐xylylenediamine)1/2 and ZnS(1,3‐diaminopropane)1/2

01.07.2015 | K. Luberda‐Durnaś, W. Łasocha, Crystal Research and Technology, 2015

Two hybrid organic‐inorganic materials, ZnS(1,3‐diaminopropane)1/2 {1} and ZnSe(m‐xylylenediamine)1/2 {2} were used as precursors of nanometric ZnS and ZnSe nanostructures. To obtain a single‐phase semiconductor, refluxing in different solvents (acetonitrile, 1‐octanol, 1,6‐hexanediol) with ...

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A novel strategy for reversible hydrogen storage in Ca(BH4)2

01.07.2015 | Yigang Yan; Arndt Remhof; Daniel Rentsch; Andreas Züttel; Santanab Giri; Puru Jena, Chemical Communication, 2015

We report that decomposition pathway of Ca(BH4)2 can be efficiently controlled by reaction temperature. That is, it decomposes into CaB6 at a lower temperature range of 320 to 350 °C, but into amorphous boron at 400 to 450 °C. We identified the formation of CaB2H6 as the crucial intermediate step ...

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CdS/ZnO core/shell nano-heterostructure coupled with reduced graphene oxide towards enhanced photocatalytic activity and photostability

28.06.2015 | Author(s): Simrjit Singh , Neeraj Khare, Chemical Physics Letters, 2015

Publication date: 1 August 2015 Source:Chemical Physics Letters, Volume 634 Author(s): Simrjit Singh , Neeraj Khare Reduced graphene oxide (RGO) coupled CdS/ZnO core/shell nanorods have been synthesized using a soft chemical route. The photocatalytic activity of CdS/ZnO/RGO nanostructure ...

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Methylamine‐Gas Induced Defect‐Healing Behavior of CH3NH3PbI3 Thin Films for Perovskite Solar Cells

27.06.2015 | Zhongmin Zhou, Zaiwei Wang, Yuanyuan Zhou, Shuping Pang, Dong Wang, Hongxia Xu, Zhihong Liu, Nitin P. Padture, Guang ..., Angewandte Chemie International Edition, 2015

Abstract We report herein the discovery of methylamine (CH3NH2) induced defect‐healing (MIDH) of CH3NH3PbI3 perovskite thin films based on their ultrafast (seconds), reversible chemical reaction with CH3NH2 gas at room temperature. The key to this healing behavior is the formation and ...

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Antagonistic Functionalized Nucleation and Oxidative Degradation in Combustive Formation of Pyrene‐Based Clusters Mediated by Triplet O and O2: Theoretical Study

26.06.2015 | Andrea Maranzana, Glauco Tonachini, ChemPhysChem, 2015

Abstract Polycyclic aromatic hydrocarbons (PAHs) and carbonaceous nanoparticles can be oxidized right from their inception and all through their growth. Oxidation can also promote their degradation. This modelistic density functional theory (DFT) study explores, in a descriptive manner, if ...

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Direct Evidence for [4+2] Cycloaddition Mechanism of Alkynes to Tantallacyclopentadiene on Dinuclear Tantalum Complexes as a Model of Alkyne Cyclotrimerization

26.06.2015 | Keishi Yamamoto, Hayato Tsurugi, Kazushi Mashima, Chemistry - A European Journal, 2015

Abstract A dinuclear tantalum complex, [Ta2Cl6(μ‐C4Et4)] (2), bearing a tantallacyclopentadiene moiety, was synthesized by treating [(η2‐EtCCEt)TaCl3(DME)] (1) with AlCl3. Complex 2 and its Lewis base adducts, [Ta2Cl6(μ‐C4Et4)L] (L=THF (3 a), pyridine (3 b), THT (3 c)), served as more active ...

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High‐Yield Lithiation of Azobenzenes by Tin–Lithium Exchange

26.06.2015 | Jan Strueben, Matthias Lipfert , Jan‐Ole Springer , Colin A. Gould, Paul J. Gates, Frank D. Sönnichsen, Anne Staubitz, Chemistry - A European Journal, 2015

Abstract The lithiation of halogenated azobenzenes by halogen–lithium exchange commonly leads to substantial degradation of the azo group to give hydrazine derivatives besides the desired aryl lithium species. Yields of quenching reactions with electrophiles are therefore low. This work shows ...

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Anion‐, Solvent‐, Temperature‐, and Mechano‐Responsive Photoluminescence in Gold(I) Diphosphine‐Based Dimers

26.06.2015 | Andrea Deák, Csaba Jobbágy, Gábor Marsi, Miklós Molnár, Zoltán Szakács, Péter Baranyai, Chemistry - A European Journal, 2015

Abstract A series of [Au2(nixantphos)2](X)2 (nixantphos=4,6‐bis(diphenylphosphino)‐phenoxazine; X=NO3, 1; CF3COO, 2; CF3SO3, 3; [Au(CN)2], 4; and BF4, 5) complexes that exhibit intriguing anion‐switchable and stimuli‐responsive luminescent photophysical properties have been synthesized and ...

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