JPS609864B
The catalyst comprising mainly noble metal and a support material has, on the one hand, a three-dimensional edge zone which is low in noble metal or free of noble metal and also has a like core, but, on the other hand, has a three-dimensional ring zone which is rich in noble metal. This catalyst has...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The catalyst comprising mainly noble metal and a support material has, on the one hand, a three-dimensional edge zone which is low in noble metal or free of noble metal and also has a like core, but, on the other hand, has a three-dimensional ring zone which is rich in noble metal. This catalyst has special activity which is obtained reproducibly and persists for a long time. It is used, in particular, in catalytical reactions. |
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