Manganese and Rhenium Catalysts

There are very few reports of supported monometallic catalysts prepared from M2(CO)io (M = Mn, Re). Most papers dealing with the use of M2(CO)io (M = Mn, 

Re) for the preparation of solid catalysts refer to bimetallic catalysts containing manganese or rhenium. These systems are covered in the Section 8.2.3.1 (Pt-Re) and Section 8.3.1.1 (Fe-Mn). 

Nano-sized manganese-carbonyl subspecies on MCM-41 have been prepared by impregnation of Mn2(CO)io under UV irradiation followed by an ultrasound treatment. From XANFS characterization, the formation of highly dispersed species with a formal oxidation state of -t-2.2 is proposed. These systems could be used as nanometric reactors [23]. 

Stable rhenium tricarbonyls bonded to the surface of MgO have been prepared and characterized by EXAFS. Heating under He, O2 or vacuum of a sample obtained by impregnation of Re2(CO)io produced the oxidative fragmentation of the initial surface organometallic species [39-41]. These types of supported well-characterized species can be used as models in the study of reaction mechanisms [42]. 

Catalysts Containing Nickel, Palladium, Platinum and Cold 

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