Materials Chemistry

Metal-organic frameworks induce hypergolic ignition of bulk metals

Authors

Abstract

We demonstrate the unprecedented ability to induce hypergolic behavior, i.e. rapid and spontaneous ignition upon contact with an oxidizer, in non-hypergolic metal fuels by blending them with hypergolic metal-organic frameworks (HMOFs). Using magnesium, aluminum or zinc metal as the fuel, we demonstrate materials with ignition delays (IDs) below 50 ms, and calculated specific impulse (Isp) in the 220-250 s range. These parameters are comparable to those of toxic and carcinogenic hydrazine-based hypergols conventionally used in aerospace technologies, suggesting a route to develop cleaner, safer propulsion systems.

Content

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Supplementary material

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Metal-organic frameworks induce hypergolic ignition of bulk metals
Details of experimental procedures and instrumental tech-niques, selected thermal analysis, surface area analysis, SEM, drop testing, PXRD analysis, XPS and calculated Isp data.