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<p>Carbon capture, utilization, and storage (CCUS) technologies are widely considered essential for mitigating anthropogenic CO<sub>2</sub> emissions; however, their large-scale deployment is strongly constrained by materials degradation and reliability challenges occurring during both CO<sub>2</sub> capture and transport. This review examines the materials-related mechanisms governing degradation in post-combustion CO<sub>2</sub> capture systems and dense-phase CO<sub>2</sub> transport infrastructure. Attention is given to amine-based absorption processes, where oxidative and thermal degradation pathways, aerosol-mediated solvent losses, and heat-stable salt formation significantly affect solvent stability and materials compatibility. Emerging solvent systems, including phase-change absorbents, mixed amines, amino acid salts, and functionalized ionic liquids, are evaluated with respect to their degradation behavior and long-term materials interactions. For CO<sub>2</sub> transport, recent experimental and modeling studies on corrosion processes in dense-phase and supercritical CO<sub>2</sub> pipelines are critically analyzed. Emphasis is placed on the synergistic influence of impurities such as H<sub>2</sub>O, O<sub>2</sub>, SO<sub>2</sub>, NO<sub>2</sub>, and H<sub>2</sub>S on corrosion kinetics, localized attack, and fracture susceptibility of carbon steels and corrosion-resistant alloys. Reported corrosion rates, impurity thresholds, and mitigation strategies including material selection, protective coatings, corrosion inhibitors, and real-time monitoring are compared to define safe operational envelopes. By integrating solvent chemistry with corrosion science and materials performance, this review provides a materials-focused framework for improving the durability and reliability of CCUS infrastructure and identifies key research priorities for advanced materials development.</p>

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Review: material degradation in carbon capture and storage systems—solvent chemistry, corrosion mechanisms, and materials reliability

  • 期刊论文

  • 发表日期：

    2026年5月23日

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  • Ramzi Dhahri,
  • Mohammed Khalil Mohammed Ali,
  • Hasan B. Albargi,
  • Elkenany Brens Elkenany

摘要

Carbon capture, utilization, and storage (CCUS) technologies are widely considered essential for mitigating anthropogenic CO2 emissions; however, their large-scale deployment is strongly constrained by materials degradation and reliability challenges occurring during both CO2 capture and transport. This review examines the materials-related mechanisms governing degradation in post-combustion CO2 capture systems and dense-phase CO2 transport infrastructure. Attention is given to amine-based absorption processes, where oxidative and thermal degradation pathways, aerosol-mediated solvent losses, and heat-stable salt formation significantly affect solvent stability and materials compatibility. Emerging solvent systems, including phase-change absorbents, mixed amines, amino acid salts, and functionalized ionic liquids, are evaluated with respect to their degradation behavior and long-term materials interactions. For CO2 transport, recent experimental and modeling studies on corrosion processes in dense-phase and supercritical CO2 pipelines are critically analyzed. Emphasis is placed on the synergistic influence of impurities such as H2O, O2, SO2, NO2, and H2S on corrosion kinetics, localized attack, and fracture susceptibility of carbon steels and corrosion-resistant alloys. Reported corrosion rates, impurity thresholds, and mitigation strategies including material selection, protective coatings, corrosion inhibitors, and real-time monitoring are compared to define safe operational envelopes. By integrating solvent chemistry with corrosion science and materials performance, this review provides a materials-focused framework for improving the durability and reliability of CCUS infrastructure and identifies key research priorities for advanced materials development.