Using Mechanical Alloying to Create Bimetallic Catalysts for Vapor-Phase Carbon Nanofiber Synthesis

摘要: Carbon nanofibers were generated over bimetallic catalysts in an atmospheric pressure chemical vapor deposition (APCVD) reactor. Catalyst compositions of Fe 30 at%, Cu and Ni at% mechanically alloyed using high-energy ball milling durations 4, 8, 12, 16, 20 h. The catalyst powders then used to produce carbon ethylene hydrogen (4:1) at temperatures 500, 550, 600 °C. microstructures the characterized as a function time well temperature. corresponding rates assessed are correlated microstructural features each catalyst. process directly determines performance toward deposition, both performed comparably those made by traditional co-precipitation methods. Considerations miscible immiscible nanostructured alloy systems discussed.