화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.93, 279-289, January, 2021
DOI10.1016/j.jiec.2020.10.004  Export Citation
An investigation on the N2O decomposition activity of MnxCo1xCo2O4 nanorods prepared by the thermal decomposition of their oxalate precursors
Bahaa M. Abu-Zied1, 2, †, Lucie Obalová1, Katerina Pacultová1, Anna Klegova1, and Abdullah M. Asiri3
  • 1Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 2172/15, 70800 Ostrava, Czech Republic
  • 2Chemistry Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt
  • 3Center of Excellence for Advanced Materials Research, & Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
E-mail:
This investigation aimed to develop a series of new spinel-oxide catalysts with the general formula MnxCo1-xCo2O4 (0.0 ≤ x ≤ 1.0) and testing their activity towards N2O direct decomposition. These catalysts have been prepared by the microwave-assisted co-precipitation method and the subsequent calcination at 500 °C. Characterization results revealed that the utilized preparation protocol has led to the development of pure spinel phases with nanorods morphology. N2O decomposition experiments indicated that the prepared catalysts were active and the best performance was exhibited by Mn0.75Co0.25Co2O4 catalyst. The activity of the Mn0.75Co0.25Co2O4 was enhanced by doping with K-ions at optimal concentration (nK/(nCo + nMn) = 0.025). The co-existence of some contaminants (O2, NO, H2O vapor) in the reactor feed revealed different inhibitory levels on the performance of the K0.025Mn0.75Co0.25Co2O4 catalyst. The inhibitory order was O2 < H2O < NO < O2 + H2O < O2 + H2O + NO.
Keywords:Mn-Co spinels;MnxCo1-xCo2O4;N2O decomposition;Potassium doping
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