Spray-Dried Sodium Zirconate: A Rapid Absorption Powder for CO₂ Capture with Enhanced Cyclic Stability.

ABSTRACT: Improved powders for capturing CO₂ at high temperatures are required for H₂ production using sorption-enhanced steam reforming. Here, we examine the relationship between particle structure and carbonation rate for two types of Na₂ ZrO₃ powders. Hollow spray-dried microgranules with a wall thickness of 100-300 nm corresponding to the dimensions of the primary acetate-derived particles gave about 75 wt % theoretical CO₂ conversion after a process-relevant 5 min exposure to 15 vol % CO₂ . A conventional powder prepared by solid-state reaction carbonated more slowly, achieving only 50 % conversion owing to a greater proportion of the reaction requiring bulk diffusion through the densely agglomerated particles. The hollow granula

SUBMITTER: Bamiduro F 

PROVIDER: S-EPMC5516178 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature