Carbon dioxide adsorption and desorption study using bimetallic calcium oxide impregnated on iron (III) oxide

• Main Authors: Lahuri, Azizul Hakim, Yarmo, Mohd Ambar, Tengku Azmi, Tengku Sharifah Marliza, Abu Tahari, Maratun Najiha, Samad, Wan Zurina, Dzakaria, Norliza, Yusop, Muhammad Rahimi
• Format: Article
• Language: English
• Published: Trans Tech Publications 2017
• Online Access: http://psasir.upm.edu.my/id/eprint/61044/1/Carbon%20dioxide%20adsorption%20and%20desorption%20study%20using%20bimetallic%20calcium%20oxide%20impregnated%20on%20iron%20%28III%29%20oxide.pdf; http://psasir.upm.edu.my/id/eprint/61044/

Bimetal adsorbent system of calcium oxide impregnated on iron (III) oxide were evaluated as a potential source of basic sites for CO2 capture. The adsorbents were prepared by impregnation method were calcined at 200 until 600 °C. Several characterizations were carried out using XRD, BET and CO2-TPD analysis. The CaO loading increased the basicity of the adsorbent significantly enhance the CO2 chemisorption. Furthermore, it drastically reduced the desorption temperature to 310-490 °C, which is important in chemisorption aspect. The CaO/Fe2O3200 which calcined at 200 °C was found to be most efficient. The CO2 chemisorption (81.29 mg CO2/g adsorbent) was contributed most compared to physisorption (4.64 mg CO2/g adsorbent).