Results 191 to 200 of about 96,389 (286)

Spatial Evolution of Coke in ZSM‐5 Catalysts During Methanol‐to‐Hydrocarbons Conversion Revealed by In Situ X‐Ray Photoelectron Spectroscopy

open access: yesAngewandte Chemie International Edition, EarlyView.
Coking is the central source of deactivation of zeolite catalysts. Using in situ XPS along with complementary methods, we identify differences in the formation kinetics and composition of surface coke on industrially relevant ZSM‐5 catalysts during MTH conversion, demonstrating the strong potential of this technique for studying catalyst deactivation ...
Luca Artiglia   +6 more
wiley   +1 more source

Nickel-Catalyzed Twofold Conjunctive Coupling via Philicity-Alternating Radical Relay. [PDF]

open access: yesAdv Sci (Weinh)
Jeon JH   +7 more
europepmc   +1 more source

Aziridination of a Single Carbon Atom in Alkenes via Energy Transfer Catalysis

open access: yesAngewandte Chemie International Edition, EarlyView.
Contrary to traditional alkene aziridination via (formal) nitrene transfer, we herein report a strategy that achieves intermolecular aziridination of a single alkene carbon atom and installs an additional group at the other. Enabled by metal‐free energy transfer (EnT) catalysis, alkenyl boronates and silanes are transformed into reactive intermediates ...
Fritz Paulus   +7 more
wiley   +1 more source

Shining light on the mechanism of photochemical alkene formation in vitamin B<sub>12</sub>. [PDF]

open access: yesChem Sci
Mukherjee A   +6 more
europepmc   +1 more source

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