Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5376686 | Chemical Physics | 2006 | 5 Pages |
Abstract
This study investigated the control of dissolved oxygen concentration using magnetic forces from gradient magnetic fields near a Nd-Fe-B permanent magnet. Maximum values of magnetic flux density and the product of the magnetic flux density and its gradient were 0.63Â T and 44Â T2/m, respectively. The magnet was placed under a Petri dish filled with 15Â ml of 10% ammonia water. The Petri dish had a copper sheet in the center. Absorbance of tetraamminecopper(II) complex produced by the reaction in oxygen was measured using a spectrophotometer to observe oxygen concentration. Results showed that the magnetic field quantitatively enhanced tetraamminecopper(II) complex production. Moreover, remarkable enhancement of the copper complex production occurred in the magnetic field at less than 2Â mm depth. The calculated magnetic force increase near the magnet surface supports this result. These results show that greater enhancement of the reaction rate occurs when the stronger magnetic force acts on oxygen molecules.
Related Topics
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Physical and Theoretical Chemistry
Authors
Satoka Aoyagi, Akira Yano, Yasutaka Yanagida, Eiji Tanihira, Akio Tagawa, Mitsuo Iimoto,