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Questions and Answers
Which type of solids are used for ambient temperature CO2 adsorption?
Which type of solids are used for ambient temperature CO2 adsorption?
- Polyethylene and polypropylene
- Zeolites and metal-organic frameworks (MOFs) (correct)
- Activated carbon and graphene
- Silica and aluminum based high surface area porous solids
What is a major disadvantage of current adsorption processes for CO2?
What is a major disadvantage of current adsorption processes for CO2?
- High energy consumption
- Difficulty in regeneration of adsorbents
- Limited to small-to-medium scale tonnage separations (correct)
- Inability to capture CO2 at low temperatures
What modification is made to silica and aluminum based high surface area porous solids to adsorb CO2 at low temperatures?
What modification is made to silica and aluminum based high surface area porous solids to adsorb CO2 at low temperatures?
- Introduction of fluorine atoms
- Incorporation of metal nanoparticles
- Addition of amine groups (correct)
- Doping with carbon nanotubes
What is the selectivity mechanism for CO2 adsorption on aminophenyl surface groups?
What is the selectivity mechanism for CO2 adsorption on aminophenyl surface groups?
What type of equilibria serves as the selectivity mechanism for CO2 adsorption?
What type of equilibria serves as the selectivity mechanism for CO2 adsorption?
What is the ideal isotherm for CO2 adsorption?
What is the ideal isotherm for CO2 adsorption?
What is a disadvantage of liquid phase chemical absorption systems for CO2 capture?
What is a disadvantage of liquid phase chemical absorption systems for CO2 capture?
What are the alternatives mentioned for CO2 adsorption?
What are the alternatives mentioned for CO2 adsorption?
What will enhance capacity in CO2 adsorption processes?
What will enhance capacity in CO2 adsorption processes?
What type of equilibrium condition is represented by ci(A) = Kici(B) where Ki >> 1?
What type of equilibrium condition is represented by ci(A) = Kici(B) where Ki >> 1?
What type of equilibria is mentioned in the context of CO2 adsorption?
What type of equilibria is mentioned in the context of CO2 adsorption?
What is the disadvantage of current adsorption processes for CO2?
What is the disadvantage of current adsorption processes for CO2?
In the context of CO2 capture, what does a steep curve in the amount adsorbed vs. pressure graph indicate?
In the context of CO2 capture, what does a steep curve in the amount adsorbed vs. pressure graph indicate?
What does the selectivity to CO2 indicate in the given graph?
What does the selectivity to CO2 indicate in the given graph?
What does the equation $c (B) i,IN$ represent in the context of sorption with regeneration?
What does the equation $c (B) i,IN$ represent in the context of sorption with regeneration?
What does the term 'bed voidage' ($\ñB$) represent in the context of sorption with regeneration?
What does the term 'bed voidage' ($\ñB$) represent in the context of sorption with regeneration?
In the context of membrane separations, what does the term 'Ls' represent?
In the context of membrane separations, what does the term 'Ls' represent?
What does the equation $\ñB = bed voidage$ represent in the context of sorption with regeneration?
What does the equation $\ñB = bed voidage$ represent in the context of sorption with regeneration?
What does the term 'Ki >> 1' indicate in the context of sorption equilibrium?
What does the term 'Ki >> 1' indicate in the context of sorption equilibrium?
What does the term 'DB, D(A)' represent in the context of sorption with regeneration?
What does the term 'DB, D(A)' represent in the context of sorption with regeneration?
What does the equation $ci (t,L) = c (B) i,IN$ represent in the context of sorption with regeneration?
What does the equation $ci (t,L) = c (B) i,IN$ represent in the context of sorption with regeneration?
What does the term 'μ' represent in the context of sorption with regeneration?
What does the term 'μ' represent in the context of sorption with regeneration?
What does the term 'Gpi' represent in the context of sorption with regeneration?
What does the term 'Gpi' represent in the context of sorption with regeneration?
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