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Cobalt caged for catalysis


, : Cobalt caged for catalysis. Nature 388: 5-16

In this issue, Stucky et al. report on a new method for producing microporous materials containing transition metals. A new cobalt reagent, CoCO3, and a largely nonaqueous ethylene glycol solvent system provided conditions that were conducive to the synthesis of cobalt phosphates. The crystallized products were stabilized by the space filling and charge compensation afforded by organic ammonium cations and water filling their pores. An aluminum cobalt phosphate, called ACP-1, exhibited an unprecedented structure comprising an array of 9 cube-shaped building blocks arranged at the corners and in the center of a large cube. This unit could be repeated to obtain a 3-D network of 3.8 A channels.

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