Additively Manufactured Geopolymer Monoliths as Robust Supports for High Temperature Catalytic Reactions.

ABSTRACT: Additively manufactured geopolymers are emerging as a versatile class of structured materials combining thermal and mechanical resilience for application in extreme environments. In this work, porous geopolymer monoliths were fabricated by material extrusion (MEX) using tailored metakaolin-based pastes, and printability was quantitatively assessed through a rheological protocol that links precursor attributes to processing behavior. The resulting 3D-printed structures (70% porosity, 30 m²/g) retained mechanical integrity after calcination at 800 °C, in contrast to conventionally cast counterparts that suffered severe strength loss. Upon Ni impregnation, temperature-programmed reduction (TPR-H₂) evidenced strong metal-support interactions and the formation of stable ni

SUBMITTER: Eleuterio RV 

PROVIDER: S-EPMC12824935 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature