Accession Number : AD0374014

Title :   STABILIZATION OF THE LMH-2/MMH FUEL.

Descriptive Note : Quarterly technical progress rept. no. 1, 1 Apr-30 Jun 66,

Corporate Author : ATLANTIC RESEARCH CORP ALEXANDRIA VA

Personal Author(s) : Randolph ,Kendall B. ; Hassis ,Carl H. ; Kivel,Joseph

Report Date : JUL 1966

Pagination or Media Count : 34

Abstract : A study of the surface properties of LMH-2 has been initiated in order to identify the source of incompatibility between monomethyl hydrazine and the LMH-2. Argon and nitrogen adsorption isotherms have been used to calculate the surface areas and pore volume distributions. Organic vapors and water have been adsorbed on these powders to observe any reactivity or catalytic activity of the surface. The crystalline powder catalyzed the condensation of propionaldehyde and reacted rapidly with water, but the amorphous powders failed to undergo similar reactions. Most of the adsorption experiments proceeded extremely slowly because of long time intervals needed for pressure equilibration. The presence of pores in the LMH-2 does not appear to be responsible for the slow adsorption. The slow adsorption may be caused by a lack of adsorption sites, or the reactions may have relatively high activation energies. No effective surface treatment has been uncovered, but the adsorption experiments have revealed that the crystalline powders have strong basic groups residing at the surface. There is an indication that acid sites may be present also. (Author)

Descriptors :   (*METHYL HYDRAZINES, COMPATIBILITY), ARGON, VAPORS, SURFACE PROPERTIES, ADSORPTION, GASES, POROSITY, STABILITY, CHEMICAL PROPERTIES, WATER, ORGANIC COMPOUNDS (U) *THIXOTROPIC ROCKET PROPELLANTS, GELS, BERYLLIUM COMPOUNDS, HYDRIDES

Subject Categories : Physical Chemistry
      Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE