Results 81 to 90 of about 26,716 (284)

Ambient Hydrocarbonylation of Olefins Enabled by Visible‐Light

Advanced Science, EarlyView.
A novel photo‐induced methodology for hydrocarbonylation has been established, resolving the inherent conflicts between competitive olefin and CO insertion in traditional methods that necessitate harsh conditions. Accordingly, an efficient and versatile hydrocarbonylation of olefins enabled by visible‐light irradiation under ambient conditions has been
Hongchi Liu, Tianze Zhang, Hanmin Huang
wiley   +1 more source

Complex Hydrides

, 2010
Complex hydrides are salt-like materials in which hydrogen is covalently bound to the central atoms, in this way a crystal structure consisting of so-called "complex anions" is formed. In general, complex hydrides have the chemical formula AxMeyHz. Compounds where position A is preferentially occupied by elements of the first and second groups of the ...
Weidenthaler, C., Felderhoff, M.
openaire   +3 more sources

Chemical Upcycling of Nitrile Butadiene Rubbers to Polyamines and Polyols by Chemoselective Catalytic Hydrogenation

Angewandte Chemie, EarlyView.
We demonstrate here the transformation of NBR (Nitrile butadiene rubber) including post‐consumer waste sourced from nitrile gloves and o‐rings into polyamines and polyols via ruthenium catalyzed hydrogenation. ABSTRACT We report here two new approaches for the chemical recycling/upcycling of nitrile butadiene rubber (NBR) to make either polyamines or ...
Alejandra Sophia Lozano Perez, Raymundo Marcial‐Hernandez, Harini Sampathkumar, Oluchi Emenike, Ketan Pancholi, Claire N. Brodie, Daniel M. Dawson, Amit Kumar   +7 more
wiley   +2 more sources

Electronic Principles of Hydrogen Incorporation and Dynamics in Metal Hydrides

Crystals, 2012
An approach to various metal hydrides based on electronic principles is presented. The effective medium theory (EMT) is used to illustrate fundamental aspects of metal-hydrogen interaction and clarify the most important processes taking place during the ...
Ljiljana Matović, Ivana Radisavljević, Nikola Novaković, Nenad Ivanović, Jasmina Grbović Novaković   +4 more
doaj   +1 more source

Electronic Structure of the Complex Hydride NaAlH4

, 2004
Density functional calculations of the electronic structure of the complex hydride NaAlH4 and the reference systems NaH and AlH3 are reported. We find a substantially ionic electronic structure for NaAlH4, which emphasizes the importance of solid state ...
A. Aguayo, A. Zuttel, B. Bogdanovic, B. Bogdanovic, B. Bogdanovic, B. Bogdanovic, B.C. Hauback, C. Weidenthaler, D. J. Singh, D. Singh, D. Sun, E. Zintl, E.H. Majzoub, H. Smithson, H.W. Brinks, I.N. Goncharenko, J.P. Dekker, J.W. Turley, K.J. Gross, K.K. Ng, M. Fichtner, M.E. Arroyo y de Dompablo, M.P. Balogh, O.J. Zogal, O.J. Zogal, P. Vajeeston, P. Vajeeston, P. van Gelderen, P. van Gelderen, R. Eder, R.E. Cohen, S.M. Opalka, T. Miyake, V.K. Belskii, Y. Wang, Y. Wang, Z.W. Wu   +36 more
core   +1 more source

Toward Predictive Theory in Single‐Atom Catalysis

Advanced Science, EarlyView.
A lifecycle‐oriented framework reframes modeling in single‐atom catalysis. By combining ensemble‐based descriptions with explicit validation against experimental observables, the approach defines the scope of theory across catalyst synthesis, activity, stability, and safety, clarifying where quantitative insight is possible and where interpretation ...
Andrea Ruiz‐Ferrando, Sharon Mitchell, Núria López, Javier Pérez‐Ramírez   +3 more
wiley   +1 more source

Navigating Nitration Chemistry: A Practical Guide to Reagents, Mechanisms, and Selectivity

Angewandte Chemie, EarlyView.
This review highlights key contributions of modern nitration chemistry, emphasizing sustainable mechanistic platforms and comparing the performance of both organic and inorganic reagents across aromatic, ipso‐, olefin, alkyne, and heteroatom nitration. It provides the community with a clearer, unified perspective on current advances and facilitates the
Harry Lecomte, Anthony J. Fernandes, Dmitry Katayev   +2 more
wiley   +2 more sources

Fabrication of Composite Cathode for All‐Solid‐State Sodium Batteries

Advanced Energy Materials, EarlyView.
The design of composite cathodes for all‐solid‐state sodium batteries must address three critical challenges—interfacial side reactions, interfacial delamination, and highly tortuous transport pathways. This work outlines structural and interfacial strategies to optimize ion transport and mechanical stability, enabling durable, and high‐performance ...
Gaoming Sun, Yuan Ma, Hehe Zhang, Shengan Wu, Shiyong Chu, Stefano Passerini, Yanjiao Ma   +6 more
wiley   +1 more source

Structural Insights Into CO2 Transport Pathways in a W‐Formate Dehydrogenase: Structural Basis for CO2 Reduction

Angewandte Chemie, EarlyView.
Integrated structural analysis of N. vulgaris formate dehydrogenase AB, an enzyme with applications in climate change mitigation, is reported. The substrate/product diffusion pathways were fully mapped, and a retention site was identified that transiently holds substrates and has a key role in CO2‐reducing activity.
Guilherme Vilela‐Alves, Rita Rebelo Manuel, Guilherme Martins, Philippe Carpentier, Agata Raczyńska, Maciej Szaleniec, Inês A. Cardoso Pereira, Maria João Romão, Cristiano Mota   +8 more
wiley   +2 more sources

Storing Renewable Energy in the Hydrogen Cycle

CHIMIA, 2015
An energy economy based on renewable energy requires massive energy storage, approx. half of the annual energy consumption. Therefore, the production of a synthetic energy carrier, e.g. hydrogen, is necessary. The hydrogen cycle, i.e. production
Andreas Züttel, Elsa Callini, Shunsuke Kato, Züleyha Özlem Kocabas Atakli   +3 more
doaj   +1 more source