Understanding the formation mechanism of crystalline hydrated polymorphs of carbonic acid from CO₂ clathrate hydrate.

ABSTRACT: Carbon dioxide (CO₂) and water (H₂O) icy mixtures, together with a few other simple molecules, have a prominent role in astrochemical processes. The formation of the solid 1 : 1 CO₂ : H₂O adduct, carbonic acid (H₂CO₃), has been long studied because of its importance in the biological and geochemical domains. Our recent discovery of a novel, highly reproducible synthetic path to obtain crystalline hydrated H₂CO₃ polymorphs from low temperature compression of CO₂ clathrate hydrate highlighted the role of pressure in the chemistry of crystal ices. Herein, we report an extensive study about the reaction mechanism leading to this synthesis, unveiling a multi-step temperature-governed process that

SUBMITTER: Berni S 

PROVIDER: S-EPMC12577018 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature