Abstract:
The major challenges that the world is facing now a days is the increase in greenhouse
gasses which causes the global warming. The CO2 gas is one of the greenhouse gasses,
it is one of the major candidates that is taking part in greenhouse effect. Due to the
increase in CO2 gas the greenhouse effect is also increase and the global warming is
also increase. Continuous increase in CO2 emission, there is a need to minimize the
emission of the CO2 gas. Many types of absorbents and adsorption techniques are used
to capture the CO2 gas. The basic aim of this work is to provide detail overview for the
novel class of adsorbents ZIF8 and ZIF67 with Manganese loaded ZIF8 and ZIF67 that
is used to capture the CO2. The ZIF shows the higher uptake of the CO2 due to its
unique structure and high surface area.
An assortment of analysis techniques, including XRD, FTIR, and SEM, are employed
to characterize the samples and examine their structural and morphological properties.
The adsorption and desorption activities of CO2 on and around the ZIFs were
investigated utilizing a high pressure sorption analyzer. At a temperature of 45°C and
a pressure of 0-15 bar, the adsorption and desorption of these samples were
investigated. The integration of this transition metal base ZIF results in favorable
adsorption and desorption characteristics.
Adsorption/desorption analysis shows the satisfactory results for their CO2 adsorption
capacity. Manganese loaded ZIFs shows high capacity to adsorb carbon dioxide (CO2).
Manganese loaded ZIF8 and Manganese loaded ZIF67 was studied at 45o C
temperature and 0-15 bar pressure, on these condition it adsorb 5.70 mmol/g and 8.34
mmol/g CO2 respectively. Manganese loaded ZIFs shows very low CO2 uptake loss
for 10 cycles. Manganese loaded ZIF8 shows 9% and Manganese loaded ZIF67 7%
uptake loss for 10 cycles. At this condition they have more adsorption capacity by
increasing the pressure.
