Results 211 to 220 of about 128,263 (290)

Hydrogen Isotope Exchange in Pyridine Catalyzed by an Iron(II) Imido Complex: Counterion‐Directed Regioselectivity

Angewandte Chemie, EarlyView.
Anionic high‐spin iron(II) imido complexes are catalysts for the hydrogen isotope exchange (HIE) reaction with pyridine as the substrate. The alkali metal counter‐cation plays critical roles in activating the substrate and facilitating deuteration. These complexes catalyze site‐selective α‐, α,β,γ‐, and β,γ‐deuteration of pyridine, where the counter ...
Bin Feng, Guorong Li, Yafei Gao, Nobuyuki Yamamoto, Maren Pink, Qian Peng, Jeremy M. Smith   +6 more
wiley   +2 more sources

Alkali activation of fayalite slag

, 2017
In this thesis, alkali activation of fayalite slag was investigated. The slag utilized is a waste by product from nickel production, the activation of which resulted in the formation of a geopolymer binder of acceptable properties. The need for a reduction in overall waste output as well as the cementitious properties exhibited by this slag motivated ...
openaire   +1 more source

Site‐Selective B─H Activation via HAT Toward Xanthyl‐closo‐Carboranes as Bench‐Stable Precursors of Organosulfur Boron Clusters

Angewandte Chemie, EarlyView.
A light mediated direct regioselective B─H functionalization, via hydrogen atom transfer (HAT), is described. Unexplored xanthyl‐closo‐carboranes as novel bench‐stable and versatile platforms to access sulfur‐containing boron clusters are reported for the first time.
Marco Rusconi, Eugenia Magi, Polyssena Renzi, Emanuele Azzi, Valeria Lagostina, Enrico Salvadori, Mario Chiesa, Birgit Hischa, Giovanni Ghigo, Annamaria Deagostino   +9 more
wiley   +2 more sources

Aggregates Obtained by Alkali Activation of Fly Ash: The Effect of Granulation, Pelletization Methods and Curing Regimes. [PDF]

Materials (Basel), 2019
Rudić O, Ducman V, Malešev M, Radonjanin V, Draganić S, Šupić S, Radeka M.   +6 more
europepmc   +1 more source

Tandem Reactivity of Metal−Carbon and Carbon−Silicon Bonds in Mononuclear α‐Silyl Organolithium or Organosodium Complexes Towards CO, CO2 and Heteroallenes

Angewandte Chemie, EarlyView.
Anionic α‐silyl alkyl is one of the most used organometallic building blocks and funtional groups. Traditionally, the C─Si bond in these complexes is considered as inert. In this work, we report a series of reactions between mononuclear organo‐lithium and ‐sodium complexes with CO, CO2, or heteroallenes.
Xiao Yang, Jack M. Hemingway, Wataru Kanna, Nathan Davison, Hiroki Hayashi, Louise Male, Paul G. Waddell, James A. Dawson, Erli Lu   +8 more
wiley   +2 more sources

Glass-Ceramic Foams from 'Weak Alkali Activation' and Gel-Casting of Waste Glass/Fly Ash Mixtures. [PDF]

Materials (Basel), 2019
Rincón Romero A, Toniolo N, Boccaccini AR, Bernardo E.   +3 more
europepmc   +1 more source

Alkali Activation of Waste Clay Bricks: Influence of The Silica Modulus, SiO₂/Na₂O, H₂O/Na₂O Molar Ratio, and Liquid/Solid Ratio. [PDF]

Materials (Basel), 2020
Gado RA, Hebda M, Łach M, Mikuła J.
europepmc   +1 more source

Spin‐State Modulation of Atomic Iron Sites Enables Efficient CO2 Electroreduction in Acid Medium

Angewandte Chemie, EarlyView.
An axial oxygen ligand was added to shift the spin state of the single‐atom Fe site from low to medium spin. This change reduces the interfacial interaction with H3O+ and decreases the *CO desorption energy, thus enhancing CO2RR in acidic media.
Shanhe Gong, Yanjie Zhai, Qing Xia, Xu Han, Weisong Li, Yiran Ying, Jie Wu, Yingying Zhou, Xiaojie She, Zhaolong Wang, Chundu Wu, Xiaomeng Lv, Xiao Zhang, Shu Ping Lau   +13 more
wiley   +2 more sources

Preliminary Research on the Physical and Mechanical Properties of Alternative Lightweight Aggregates Produced by Alkali-Activation of Waste Powders. [PDF]

Materials (Basel), 2018
Tataranni P, Besemer GM, Bortolotti V, Sangiorgi C.   +3 more
europepmc   +1 more source