FALCON Construction”

It is interesting that in TPRx studies with an initial state of adsorbed CO t H2 on Ni/Al203 at 112 C, this leads to the formation of methoxy groups on the support 196). From a series of ingenious experiments involving isotopes, TPRx, interrupted TPRx, and TPD, Falconer and coworkers constructed a coherent explanation of their results. However, for the steady-state CO/H2 reaction at 220°C or higher, over supported Ni, Fe, Ru, and Rh, the adsorbed species on the alumina support are not in the reaction pathway toward methane (77, 190,191, 195). 

Figure 36.4. Diagram of an egg sieve constructed from a 50-ml plastic Falcon tube. First, cut the tube 3 cm from the top edge (left) and discard the bottom. Second, cut a 25-mm hole in the top of the Falcon tube (upper right). Third, cut a 60 X 60-mm piece of 100-pm polyester mesh (lower right). Place the mesh firmly over the top of the cut tube and screw on the cap. The eggs are placed within the tube.

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