New Methods for Studying Gas Solid Reaction Kinetics Using Automated Resistance Monitoring

Autor:	D. E. Rosner, P. C. Nordine, P. J. Kindlmann
Rok vydání:	1973
Předmět:	Reaction rate Arrhenius equation Chemical kinetics symbols.namesake Materials science Reaction rate constant Electrical resistance and conductance Phase (matter) symbols Melting point Analytical chemistry Transient (oscillation) Instrumentation
Zdroj:	Review of Scientific Instruments. 44:821-825
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1686256
Popis:	A new analog‐to‐digital method of monitoring and recording transient electrical resistance vs time data is described, together with its application to kinetic studies of gas/metal reactions at filament temperatures above 1000 K. Resistance measurements with a precision of 0.02% are recorded at up to 40/sec on paper tape to facilitate digital computer data processing. Owing to its speed and accuracy, the method is shown to permit reaction rate determinations during transient temperature operation; allowing a portion of the Arrhenius diagram to be obtained in a single experiment, and experiments through or up to phase transformation temperatures (e.g., filament melting). Illustrative results are presented and discussed for the F‐atom/platinum reaction, which exhibits a reaction rate maximum at a temperature well below the Pt melting point.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8966aad3008c02f6a8ec04baa76f917e https://doi.org/10.1063/1.1686256 Zobrazit plný text záznamu