MOF production by Promethean P articles
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MOF structure
Clean ue gas
MOF pellets
MOF c apture stack
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Next cycle
Utilisation process
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Desorption
Adsorption
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Temporary on-site storage
Emitter
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Transport o -site
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Underground sequestration
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Flue gas
Figure 4 Infographic of a MOF-based carbon capture system
of a MOF-based carbon capture system is relatively simple: u Having installed a new MOF-based CCS system, the emitter no longer vents their CO₂ containing flue gas to the atmosphere. It is instead piped to the MOF capture stack (MCS). v The MCS contains a number of contactor beds that are operated in a sequence. CO₂ rich flue gas enters the first bed that contains MOF pellets which adsorb the CO₂. w Just prior to the first bed becoming saturated (determined by an array of CO₂ sensors), flow is switched to a second bed. Once the flow is established at the second bed, automated valves switch the first bed into regeneration mode, which is effected by either a controlled swing of temperature or pressure (depending on the system design). x Following regeneration/desorption, the bed is left ready for when it is needed for the next cycle. manufacture of MOFs, and not all approaches are suitable for the efficient production of every MOF There are currently several different approaches to the
y At all times, ‘clean’ flue gas is either vented directly from the MCS or is returned to the site’s existing vent stack (if present) z The stripped CO₂ is sent to temporary on-site compression and storage. { The stored CO₂ can then be transported off-site for further downstream use or sequestration. perceptions of only being available in gram quantities and at exorbitant prices. This has rightly led many to question if it is remotely feasible and viable for a MOF-based technology to be deployed at the scale necessary to make an impactful dent in the global decarbonisation need in the fight against climate change. There are currently several different Commercial viability of MOFs MOFs have historically suffered from approaches to the manufacture of MOFs, and not all approaches are suitable for the efficient production of every MOF. The classical, most widely used production method is solvothermal batch synthesis, where all raw materials are simultaneously loaded into a vessel and heated to initiate the synthesis reaction(s). However, batch synthesis, while well understood, is not without its challenges. The need to safely load all materials into a vessel and consistently heat,
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