Measuring Transient Reaction Rates from Nonstationary Catalysts.

ABSTRACT: Up to now, methods for measuring rates of reactions on catalysts required long measurement times involving signal averaging over many experiments. This imposed a requirement that the catalyst return to its original state at the end of each experiment-a complete reversibility requirement. For real catalysts, fulfilling the reversibility requirement is often impossible-catalysts under reaction conditions may change their chemical composition and structure as they become activated or while they are being poisoned through use. It is therefore desirable to develop high-speed methods where transient rates can be quickly measured while catalysts are changing. In this work, we present velocity-resolved kinetics using high-repetition-rate pulsed laser ionization and high-speed ion imaging detection

SUBMITTER: Borodin D 

PROVIDER: S-EPMC7737234 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature