Catalytic bodies and method of making the same

Details Catalytic bodies and method of making the same Catalytic bodies and method of making the same

B - Operations, Transporting

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252/1, 204/197,

B01J 23/00 (2006.01) B01J 23/84 (2006.01) B01J 37/06 (2006.01) C25B 11/04 (2006.01) H01M 4/86 (2006.01) H01M 4/90 (2006.01) H01M 4/98 (2006.01)

Patent

CA 1161018

ABSTRACT A catalytic body which is substantially amor- phous is formed from at least two materials vacuum deposited on a cool substrate or sprayed on a cool surface to provide a local order non-equilibrium structural configuration. The amorphous body comprises a composition of at least one metal and a second component which maintains the amorphous character of the composition. The body has an increased number and desired type of catalytically active sites. In most applications, the composi- tion includes at least initially a component which is removed by leaching or vaporization to leave a rough surface with a large surface to volume ratio. The resulting composition is sometimes annealed to relax or modify the local structure thereof to provide a more reactive structural configuration. In an electrode form of the invention, the cata- lytic body is highly conductive, resistant to corrosion and degradation under current reversal and has low overvoltage characteristics when used in electrochemical cells.

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