The results of this study demonstrate that the Ir-promoted Ni/Al/sub 2/O/sub 3/ catalyst possesses several valuable and superior characteristics when used for catalytic methanation under typical industrial conditions. These properties include: higher activity by a factor of > 2 than that of the unpromoted Ni/Al/sub 2/O/sub 3/ catalyst; enhanced resistance to deactivation by hydrogen sulfide during exposure to contaminated feedstock, as manifested by the prolonged high methanation activity and extended service lifetime; and high resistance to carbon fouling.

Work on this project is focused on developing design and licensing information for the model facility. The subcontracts for soils and structural design and the security system design have been completed. The rack design subcontract is progressng satisfactorily. Design of facility modifications have been completed and draft reports are underway. Licensing documentation is approximately 65% complete and progressing at a satisfactory pace to meet scheduled projections.

A simple model is derived to calculate the hydrodynamic decay of laser-generated shock waves. Comparison with detailed hydrocode simulations shows good agreement between calculated time evolution of shock pressure, position, and instantaneous pressure profile. Reliability of the model decreases in regions of the target where superthermal-electron preheat effects become comparable to shock effects.