Complex oxides containing barium, manganese, lead, and cobalt have been prepared and tested as decomposition catalysts for 98% HgO2. Twenty selected compositions from the BaO-Mn2O3-PbO and BaO-Mn3O 4-FbO systems were mixed and compressed at 33,000 psi into 7/16" diameter pellets. These were then heated to temperatures up to 1000C. The pellets were tested for catalytic activity by a standard flood test with 10 ml. of 98% H2O0. Compositions low in PbO and high in Mn 2 O 3 or Mn 3 O 4 exhibited the best combination of catalytic activity and resistance to leaching or mechanical breakdown. Several additional compositions containing Co 3 0 4 also showed high catalytic activity and good mechanical strength. Catalyst materials and a modified 40 pound thrust motor were prenared for the mutor teat program. The new motor is designed to permit temperature measurements within the catalyst pack. iii ,ud TABLE OF CONTENTS Section No.
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