Results 71 to 80 of about 932 (230)

Photogenerated Oxetanes as a Gateway to Uphill Cyclopropanation

Angewandte Chemie International Edition, EarlyView.
An atom‐economical route to densely functionalized cyclopropanes from furans and photochemically activated aldehydes is enabled by a unique oxetane‐to‐cyclopropane rearrangement. These cyclopropanes can be used to access complex bioactive scaffolds and serve as a platform for asymmetric cyclopropane synthesis.
Tim Köglmeier, Thomas J. Tiefel, Oliver Reiser   +2 more
wiley   +1 more source

Hydrothermal Synthesis of Co-Ru Alloy Particle Catalysts for Hydrogen Generation from Sodium Borohydride

Advances in Materials Science and Engineering, 2013
We report the synthesis of μm and sub-μm-sized Co, Ru, and Co-Ru alloy species by hydrothermal approach in the aqueous alkaline solutions (pH ≥ 13) containing CoCl2 and/or RuCl3, sodium citrate, and hydrazine hydrate and a study of their catalytic ...
Marija Kurtinaitienė, Albina Žielienė, Loreta Tamašauskaitė-Tamašiūnaitė, Algis Selskis, Arūnas Jagminas   +4 more
doaj   +1 more source

Properties and Applications of Metal (M) dodecahydro-closo-dodecaborates (Mn=1,2B12H12) and Their Implications for Reversible Hydrogen Storage in the Borohydrides

Inorganics, 2018
Hydrogen has long been proposed as a versatile energy carrier that could facilitate a sustainable energy future. For an energy economy centred around hydrogen to function, a storage method is required that is optimised for both portable and stationary ...
Aiden Grahame, Kondo-François Aguey-Zinsou   +1 more
doaj   +1 more source

Theoretical study of activation barriers for the stepwise dehydrogenation reactions of ammine magnesium borohydride and alumohydride complexes

Тонкие химические технологии, 2011
Theoretical calculations of the potential energy surfaces along the minimum energy pathway have been performed for elementary step-wise dehydration reactions of ammine magnesium borohydride and alumohydride complexes Mg(MH4)2(NH3)2 and their dimers [Mg ...
A. A. Mikhaylin, O. P. Charkin, N. M. Klimenko   +2 more
doaj  

The Oxidation Mechanisms of Saturated Fatty Acids: Formation of Hydroperoxide Isomers and Production of 2‐Alkanones and Lactones

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Saturated fatty acids (SFAs) are generally regarded simply as being resistant to oxidation compared with unsaturated fatty acids. However, it has long been reported that SFAs can undergo oxidation when heated at high temperatures, leading to the formation of unique degradation products such as 2‐alkanones and lactones.
Kanji Aoyagi, Shunji Kato, Kiyotaka Nakagawa   +2 more
wiley   +1 more source

Complex Metal Hydrides for Hydrogen, Thermal and Electrochemical Energy Storage

Energies, 2017
Hydrogen has a very diverse chemistry and reacts with most other elements to form compounds, which have fascinating structures, compositions and properties.
Kasper T. Møller, Drew Sheppard, Dorthe B. Ravnsbæk, Craig E. Buckley, Etsuo Akiba, Hai-Wen Li, Torben R. Jensen   +6 more
doaj   +1 more source

Integrating agro‐residue valorization and clean hydrogen production: coconut fiber‐based catalysts for NaBH4 hydrolysis

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract A novel phosphoric acid‐treated green coconut fiber (GCF‐C) was developed as a catalyst for hydrogen production from the hydrolysis of sodium borohydride (NaBH4). Characterization techniques confirmed structural modifications, including X‐ray diffraction, scanning electron microscopy, X‐ray fluorescence, Fourier transform infrared, and ...
Isabelly Silveira Freitas, Francisco Izaias da Silva Aires, Dayana Nascimento Dari, Jacob Tchiyeke António Kandjila, Maurício Quintas Salamba, Diego Lomonaco, Monalisa Moura de Oliveira, Pierre Basílio Almeida Fechine, Rafael Leandro Fernandes Melo, Alan Silva de Menezes, Marcos Carlos de Mattos, Leonardo Farias Serafim, Maria Cristiane Martins de Souza, Ada Amelia Sanders Lopes, John Herbert da Silva Felix, Eveline de Abreu Menezes, José Cleiton Sousa dos Santos   +16 more
wiley   +1 more source

Increasing Hydrogen Density with the Cation-Anion Pair BH4−-NH4+ in Perovskite-Type NH4Ca(BH4)3

Energies, 2015
A novel metal borohydride ammonia-borane complex Ca(BH4)2·NH3BH3 is characterized as the decomposition product of the recently reported perovskite-type metal borohydride NH4Ca(BH4)3, suggesting that ammonium-based metal borohydrides release hydrogen gas ...
Pascal Schouwink, Fabrice Morelle, Yolanda Sadikin, Yaroslav Filinchuk, Radovan Černý   +4 more
doaj   +1 more source

Glycosylated dendrimer nanoamplifiers hijack DNA damage‐immune crosstalk for enhanced dual‐track therapy of orthotopic glioblastoma

BMEMat, EarlyView.
A glycosylated dendrimer nanoamplifier hijacks DNA damage‐immune crosstalk for enhanced radio‐immunotherapy of glioblastoma. The responsive release of demethylcantharidin simultaneously blocks repair‐mediated resistance by inhibiting DNA repair and overcomes adaptive immune resistance.
Cong Song, Binghan Liu, Junjie Liu, Ce Li, Wenqing Man, Xurui Sun, Chang Yuan, Yanjun Wang, Hong Pan, Shuanglian Wang, Zhiming Zheng   +10 more
wiley   +1 more source

Solid State NMR Characterization of Complex Metal Hydrides systems for Hydrogen Storage Applications

Journal of Analytical Science and Technology, 2011
Solid state NMR is widely applied in studies of solid state chemistries for hydrogen storage reactions. Use of 11B MAS NMR in studies of metal borohydrides (BH4) is mainly focused, revisiting the issue of dodecaborane formation and observation of 11B{1H}
Son-Jong Hwang, Robert C. Bowman, Jr., Chul Kim, Jason A. Zan, Joseph W. Reiter2   +4 more
doaj