Abstract
Biphasic intergrowth La2MnNiO6–MgO composite oxide containing 30wt% La2MnNiO6 was synthesized by ammonia aqueous (25vol.%) co-precipitation method calcined at 1100°C and investigated in the catalytic combustion of methane. Compared with the corresponding pure double perovskite-type oxide La2MnNiO6, the composite oxide La2MnNiO6–MgO exhibited much higher catalytic performance (T50=548°C,T90=628°C) and exceptional thermal stability. The excellent performance of La2MnNiO6–MgO was explained by various characterizations, such as XRD, ICP, H2-TPR, XPS, and TEM techniques. The catalytic activity of La2MnNiO6–MgO prepared by biphasic intergrowth method is superior to La2MnNiO6/MgO obtained by impregnation technique, mechanical mixing of La2MnNiO6 and MgO, and pure La2MnNiO6. The better performance of La2MnNiO6–MgO for methane catalytic combustion reaction is ascribed to a strong intergrowth interaction between La2MnNiO6 and MgO during the synthesis process. Therefore, the La2MnNiO6–MgO composite oxide can be deemed as an attractive candidate as a catalyst for the combustion of methane.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.