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Experimental study of CO2 desorption efficiency in amine solutions by the addition of SO₄²⁻ / ZrO2 supported on Al2O3 catalyst
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DOI：10.1016/j.jcou.2026.103446.png)
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Abstract
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• γ-Al₂O₃ and sulfated ZrO₂–Al₂O₃ (SZA) catalysts enhance CO₂ desorption efficiency. • Ternary amine blend (MDEA–MEA–PZ) shows superior CO₂ absorption and regeneration. • SZA catalyst increases CO₂ desorption by up to 10.3% at 80 °C and 1 atm. • Catalyst acidity promotes carbamate and bicarbonate decomposition during desorption. • The study proposes an energy-efficient catalytic route for amine solvent regeneration.
Keywords:
CO2 absorption
CO2 desorption
Catalyst
Energy reduction
Sulfated zirconia–alumina
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