The Thermal and Catalytic Decomposition of Methylhydrazines
ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL PROPULSION DIRECTORATE
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The thermal decomposition of methylhydrazine MMH, 1,1- dimethylhydrazine UDMH and trimethylhydrazine TMH using a time of flight mass spectrometer is discussed and the catalytic decomposition of MMH and UDMH over heated Shell 405, a spontaneous hydrazine decomposition catalyst, is also reported. Both the catalyzed and uncatalyzed experiments were conducted using a heated quartz chamber directly preceding the leak to the mass spectrometer. The temperature range was from ambient to an upper limit of 1000C. The main products of the thermal degradation of the methyl derivatives of hydrazine are hydrogen cyanide HCN, nitrogen N2, and ammonia NH3 in the catalytic decomposition the main products are N2 and H2, as the NH3 originally formed is decomposed by Shell 405 to yield N2 and H2.
- Organic Chemistry