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Magnetic Field‐induced Increasing of the Reaction Rates Controlled by the Diffusion of Paramagnetic Gases
Author(s) -
Peng Z.,
Wang J.,
Huang Y.,
Chen Q.
Publication year - 2004
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200402139
Subject(s) - paramagnetism , diffusion , chemistry , reaction rate , magnetic field , ferrous , aqueous solution , hydroxide , chemical physics , inorganic chemistry , thermodynamics , condensed matter physics , catalysis , physics , organic chemistry , quantum mechanics
The rates of some reactions are greatly limited by diffusion rates of paramagnetic gases. The idea to enhance them by means of applying a magnetic field was considered and tested in this paper. The introduction of a weak magnetic field into the oxidation reaction of aqueous suspensions of ferrous hydroxide increased the reaction rate to a considerable extent, which was attributed to magnetically induced convection for the existence of a gradient of susceptibilities and magnetic strength. The idea can be valuable in all the processes, in which diffusion rates of the paramagnetic gases control the reaction rates or at least play an important role.