CO2 Adsorption Study on NiO and Pr2O3 -NiO Catalyst Synthesis Using Simple Sol-Gel Method

• Published in: Oriental journal of chemistry 2017, Vol.33 (4), p.1864-1870
• Main Authors: Hasmizam Razali, Mohd, Ismail, Uwaisulqarni, Zul Helmi Mohd Rozaini, Mohd, Yusoff, Mahani
• Format: Article
• Language: English
• Subjects: Adsorbents; Adsorption; Atmosphere; Carbon dioxide; Catalysis; Catalysts; Chemical engineering; Chemical properties; Chemical synthesis; Climate change; Desorption; Fossil fuels; Gases; Industrial plant emissions; Natural gas; Nickel; Nickel oxides; Organic chemistry; Praseodymium; Praseodymium oxide; Scanning electron microscopy; Sol-gel processes; X-ray diffraction
• ISSN: 0970-020X; 2231-5039
• DOI: 10.13005/ojc/330431

Nickel oxide (NiO)and praseodymium oxide mixed nickel oxide (Pr2O3-NiO) catalysts was synthesized using modified sol-gel method for CO2 adsorption. The synthesized catalysts was characterized using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive of x-ray (EDX) and N2 gas adsorption-desorption to study their physical and chemical properties. The capability of catalystto adsorb CO2 was tested using temperature programmed desorption of CO2 (TPD-CO2) and their interaction was also studied.It was found that, Pr2O3-NiO catalyst have a remarkable CO2 uptake capacity (331.40 µmol/g) as compared to NiO (32.53 µmol/g). This is governed by the presence of cubic Pr2O3 and less crystalline sample. Moreover smaller particle size and larger BET surface area of Pr2O3-NiO catalyst provided good chemical interactions between Pr2O3-NiO and CO2 molecules.