Catalysts Prepared from Metal Carbonyls of Group 8 Iron, Ruthenium and Osmium

In contrast with the results obtained on carbon black support, a low metal aggregation was achieved using Ru4Pt2(CO)i8 as precursor and y-Al203 as support, regardless of the atmosphere used (He or H2) in the thermal decarbonylation process [64], 

It has been reported that the size of the metal cluster frame of Ru6Pt3(CO)2i( X3-H) ( X-H)3 remains on Y-AI2O3 and MgO after its impregnation and decarbonylation under He at 300 °C [65, 66]. The metallic clusters were rather strongly bound to both supports, Y-AI2O3 and MgO. The catalytic behavior of these materials in n-butane hydrogenolysis shows the suppression of the isomerization reaction according with an intimate association of Pt with Ru atoms. 

Catalysts Prepared from Metal Carbonyls of Croup 8 Iron, Ruthenium and Osmium 

Sections 8.3.1-8.3.3 present the use of iron, mthenium and osmium carbonyls, respectively, in the preparation of supported catalysts. Over non-inert supports, besides the characteristics of carbonyl compounds, the reactivity of the surface and that of the specific element, mainly related with its redox properties, will be covered for each metal. 

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