Accession Number : AD0500546

Title :   Development of a Low Cost Catalyst for Hydrazine.

Descriptive Note : Quarterly rept. no. 4, 15 Dec 68-15 Mar 69,

Corporate Author : ESSO RESEARCH AND ENGINEERING CO LINDEN N J GOVERNMENT RESEARCH DIV

Personal Author(s) : Taylor,William F. ; Lieberman,Martin ; Cohen,Murray S.

Report Date : 15 MAR 1969

Pagination or Media Count : 17

Abstract : This report describes an effort on the preparation and characterization of ruthenium or more thermally stable supports than alumina, and to the investigation of metal substrate interactions which have been shown to be strong in hydrazine decomposition catalysts. Isothermal decomposition rate measurements were conducted using catalysts consisting of ruthenium deposited on tungsten carbide, our proprietary PTN substrate and several refractory oxides. Magnesium oxide, PTN and tungsten carbide showed high activity toward hydrazine decomposition when used as a support for ruthenium. Catalysts consisting of 30 wt % ruthenium on WC and MgO had higher low temperature activity on a volume basis than alumina supported catalysts containing ruthenium at the same metal loading. The PTN supported ruthenium catalyst at a 23-40% metal loading, had slightly lower activity than the alumina supported catalyst. Isothermal decompositon studies on platinum-ruthenium-alumina catalysts at the 17 and 30 wt % total metal level indicated that the low temperature activity was improved considerably over that of the ruthenium-alumina catalysts. No noticeable change in catalyst activity was observed when the ruthenium to platinum ratio was varied from Ru/Pt 3.0-4.4.

Descriptors :   (*HYDRAZINE, CATALYSTS), THERMAL STABILITY, TUNGSTEN COMPOUNDS, COSTS (U) DECOMPOSITION, RUTHENIUM, ALUMINA, SUBSTRATES, TUNGSTEN ALLOYS, CARBIDES, MAGNESIUM OXIDES, REFRACTORY METALS, OXIDES, WATER VAPOR, HYDROGEN, PLATINUM, HEAT OF ACTIVATION, REACTION KINETICS, MOLYBDENUM COMPOUNDS

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Liquid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE