Assessment of dual-adsorbent beds for CO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si133.svg" display="inline" id="d1e459"><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math> capture by equilibrium-based process design

We have carried out a model-based assessment of dual-adsorbent beds for post-combustion CO2 capture, whereby we consider systems in which two distinct adsorbent materials are homogeneously mixed to form fixed bed adsorber. employed an equilibrium-based process model (D-BAAM) simulate and optimize the performance four-step vacuum swing adsorption cycle capture with bed. used developed framework screen 2,850 binary combinations adsorbents from database 76 promising includes zeolites, activated carbons, metal organic frameworks (MOFs) zeolitic imidazolate (ZIFs). Through unconstrained purity/recovery optimization, determine that only one pure material pair needs itself satisfy regulatory constraints on yield satisfies constraints. For these combinations, assessed optimal constrained working capacity/energy usage Pareto plane identified nine categories behavior. Five potential allow reduction energy penalty separation, as compared constituent single-adsorbent processes. observed reductions separation approximately 20%. contend such processes may be economically depending specific balance capital, operating costs, should investigated more detail using dynamic modeling associated techno-economic assessment.