Abstract
A mesoporous adsorbent was simply synthesized by adding alkaline substances to cerium(III) nitric hydrate. The surface characteristics of the synthesized cerium compound were determined with BET, XRD and TEM analysis. It was found that although the specific surface areas of the synthesized cerium compounds were among about 120–200m 2 per gram (BET area) which were smaller than the common used zeolite 13X (BET area 743 m 2 /g) and activated carbon (BET area 1079 m 2 /g), but the cerium compounds had excellent performances for CO 2 adsorption as well as the CO 2 desorption.
Highlights
Many investigations have shown that carbon dioxide (CO2) emissions are responsible for climate change
Two major approaches have been implemented as CO2 separation technology: carbon dioxide capture/sequestration (CCS) and sustainable utilization of captured CO2 as a raw material
We focused on the use of metal oxides with larger true densities than other porous materials, in particular, we considered cerium compounds such as cerium oxide and cerium hydroxide as an alternative, efficient adsorbent for the CO2 capture process
Summary
Many investigations have shown that carbon dioxide (CO2) emissions are responsible for climate change. Many advanced countries have promoted the reduction of CO2 emitted from large stationary sources including coal-based power plants, steel industry plants, biogas plants, and chemical plants The development of both economical and environmental benign ways to separate and storage the CO2 has become a global challenge. Two major approaches have been implemented as CO2 separation technology: carbon dioxide capture/sequestration (CCS) and sustainable utilization of captured CO2 as a raw material. The latter will play an important role within the decade because CO2 is a non-toxic, abundant, available, and renewable carbon resource that can be converted into various useful chemical products. This process has a high efficiency for CO2 capture, but it is energy intensive, complex and requires a high-energy input for regenerating and handling the corrosive solvents that result from the oxidation of amine-based solutions
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