Group VIII metals dehydrogenation activities

Earlier patents used catalysts containing a Group VIII metal to aid in the transfer of hydrogen (dehydrogenation and hydrogenation). The FM carbon catalyst in this project was similarly modified by the addition of 0.6 wt% of the active metal (nickel). The results using this catalyst are compared with those using FM catalyst in Table 4. The addition of nickel improved on... 

In general, inclusion of a Group IB metal with a Group VIII metal markedly decreases the hydrogenolysis activity of the latter but has a much smaller effect on the activity for reactions such as the dehydrogenation and isomerization of hydrocarbons (1,2,5-8). These observations have been supported by the work of other investigators (9-11). 

This review is followed by a consideration of some of the features characteristic of hydrocarbon reactions on catalysts comprising individual metals from Groups VIII and IB of the periodic table. Finally, the activities of a series of unsupported nickel-copper alloys for hydrogenolysis and dehydrogenation reactions are discussed. These latter studies were made to obtain information on the selectivity phenomenon with bimetallic catalysts of known structure. The nickel-copper alloys were characterized by a variety of chemical and physical probes. 

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