Spatial Separation of Copper and Cobalt Oxalate by Flow-Driven Precipitation
A precipitation reaction is investigated far from equilibrium by introducing a continuous flow of the homogeneous mixture of water-soluble metal salts into sodium oxalate solution. The spreading gravity current maintained by the density difference between the solutions creates a radially symmetric p...
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Published in | Crystal growth & design Vol. 17; no. 9; pp. 5000 - 5005 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
06.09.2017
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Online Access | Get full text |
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Summary: | A precipitation reaction is investigated far from equilibrium by introducing a continuous flow of the homogeneous mixture of water-soluble metal salts into sodium oxalate solution. The spreading gravity current maintained by the density difference between the solutions creates a radially symmetric precipitate pattern that contains spatially separated copper oxalate monohydrate and cobalt oxalate tetrahydrate, identified by X-ray diffraction measurements. In the transition zone, a unique crystalline composite containing copper oxalate plates with cobalt oxalate coating also forms. |
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ISSN: | 1528-7483 1528-7505 |
DOI: | 10.1021/acs.cgd.7b01020 |