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Volume 23, Issue 1
  • ISSN: 0032-1400
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Abstract

The catalytic reforming of crude oils has been considerably improved during the last ten years by the addition of a second metal, generally rhenium or iridium, to the small amounts of platinum present in alumina supported catalysts. A most important question, from a scientific point of view, is to differentiate between the various possible states of the metal phase, which may range from a mixture of platinum and the second metal particles to homogeneous bimetallic aggregates. This differentiation is extremely difficult because of the very small size of the metallic particles. It is reported that hydrogen-oxygen titration provides evidence of the presence of small particles of pure rhenium, iridium or ruthenium in platinum bimetallic alumina supported catalysts.

© Johnson Matthey
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/content/journals/10.1595/003214079X2311821
1979-01-01
2024-12-25
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/content/journals/10.1595/003214079X2311821
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The State of the Metal Phase in Supported Platinum-Containing Bimetallic Catalysts
Platinum Metals Review 23, 18 (1979); https://doi.org/10.1595/003214079X2311821
/content/journals/10.1595/003214079X2311821
/content/journals/10.1595/003214079X2311821
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  • Article Type: Research Article

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