Can Gas Absorption be Tuned in a Multifunctional Ionic Liquid?

ABSTRACT: The challenge of CO₂ separation and management in biogas upgrading processes is addressed, which remains a critical bottleneck when considering biomethane as a competitive and sustainable alternative to natural gas. Ionic liquids offer a promising alternative to existing sorbents due to their negligible volatility and their tunable properties. Herein, a multifunctional phosphonium triazolate ionic liquid capable of reacting reversibly with CO₂ without loss of fluidity through both cation and anion is presented. Using a combination of experiments and reaction models the interplay of different absorption mechanisms is demonstrated at varying temperatures and pressures, which lead to high capacity for CO₂ absorption and excellent selectivity for CO₂

SUBMITTER: Philippi F 

PROVIDER: S-EPMC12548951 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature