Effect of A, B-site cation on the catalytic activity of LaAMnBO (A = Ce, B = Ni) perovskite-type oxides for toluene oxidation.

Environ Sci Pollut Res Int

School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China.

Published: March 2023

ABO-type perovskites (A = La, Ce; B = Mn, Ni) were prepared by sol-gel method, and applied for catalytic oxidation of toluene. The activity test results show that the activity of LaMnO can be improved when a small amount of Ce and Ni are doped into the A and B sites of LaMnO, respectively. The effects of different calcination temperatures and different calcination time on the preparation of La-based perovskites were also investigated. The results illustrate that the toluene conversion of LaCeMnNiO is the highest when the calcination temperature is 700 °C and the calcination time is 4 h in LaCeMnNiO perovskites, and it requires lower reaction temperature when the conversion rate of toluene reaches 100% as compared to other catalysts, the T is 295 °C (T, the temperature corresponding to the 90% of toluene conversion). Importantly, the mechanism of catalytic oxidation was also discussed. Therefore, the catalyst has potential prospects in the volatile organic compounds (VOCs) degradation.

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Source
http://dx.doi.org/10.1007/s11356-022-24916-3DOI Listing

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