Processes of nonisothermal oxidation, nitridation, and ageing of aluminum powders with different particle sizes (nano-sized powder, ASD-1 powder, and PAP-2 powder) are considered. Application of non-oxide coatings onto particles of aluminum nanopowders reduces their thermal stability. Owing to scale-shaped particles, the PAP-2 powder after long-time storage preserves high activity of oxidation and nitridation, which is commensurable with that of the aluminum nanopowder. The activity of the coarse ASD-1 powder consisting of spherical particles in terms of oxidation and nitridation is low and only slightly changes during ageing
The possibility of producing complex-profile thin-walled sorbents based on synthesized zeolite is investigated. It is proposed to use natural aluminosilicate as binders. Methods have been developed for controlling properties of zeolite-based molding mixtures by introducing a plasticizer or by alkali or acid modifying the binder structure.
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