Mesoporous La0.8Sr0.2MnO3/P-COK-12 catalyst synthesized by template method:Highly active for the complete oxidation of CO

Author:

Huang Xuehui1,Hu Xiangao1,Deng Penghui1,Chen Wenzhen1

Affiliation:

1. Wuhan University of Technology

Abstract

Abstract In this study, an environmentally friendly mesoporous material called COK-12 was created using inexpensive sodium silicate as a silica source and surfactant P123 as a soft template. COK-12 was then modified with p-xylene to produce a template called P-COK-12, which had a compact and well-ordered pore structure. For the first time, this modified mesoporous material was used as a template to prepare a mesoporous La0.8Sr0.2MnO3 (LSM) catalyst through a combination of the nano-casting and sol-gel methods. The results showed that the LSM-550 catalyst, synthesized at 550 °C for 2 hours, had a large specific surface area of 72.11 m2/g and the highest molar ratio of surface Mn4+/Mn3+ and Oads/Olat. Additionally, the CO conversion results for different LSM-T samples (T=550, 600, 650, 700 °C) indicated that the LSM-550 sample exhibited the best catalytic activity, with T50 of 180 °C and T90 of 218 °C, as well as excellent stability.

Publisher

Research Square Platform LLC

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