Studies on Initial Kinetics of Room-temperature Solid-solid Reaction by UV-visible Reflection Spectrum

Chem. J. Chinese Universities

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Studies on Initial Kinetics of Room-temperature Solid-solid Reaction by UV-visible Reflection Spectrum

TANG Xin-Cun^1,2, HUANG Bai-Yun², HE Yue-Hui²

1. College of Chemistry and Chemical Engineering,
2. State Key Laboratory of Powder Metallurgy, Center South University, Changsha 410083, China

Received:2005-09-27 Revised:1900-01-01 Online:2006-08-10 Published:2006-08-10
Contact: TANG Xin-Cun

Abstract

Abstract: In this paper, the method of UV-visible reflection spectrum(UV method) was theoretically and experimentally proposed to investigate the initial kinetic characters of the solid-solid reaction with the mixture of dimethylglyoxime and Ni(Ac)₂·4H₂O, and the mixture of dimethylglyoxime and anhydrous Ni(Ac)₂ as the modeling reaction examples. The results indicated that the UV method was very sensitive in the initial period of solid-solid reaction. The reactive rates for above two reaction systems were varied non-linearly with the change of reaction time. The fastest reaction rates can be reasonably explained by the formation of the cold-melting layer or cold-dissolving-melting layer.

Key words: Room solid-solid reaction, Reaction kinetics, UV-visible reflection spectrum

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TANG Xin-Cun^1,2, HUANG Bai-Yun², HE Yue-Hui². Studies on Initial Kinetics of Room-temperature Solid-solid Reaction by UV-visible Reflection Spectrum[J]. Chem. J. Chinese Universities, doi: .

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Studies on Initial Kinetics of Room-temperature Solid-solid Reaction by UV-visible Reflection Spectrum

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