The Flower-like Co<sub>3</sub>O<sub>4</sub> Hierarchical Microspheres for Methane Catalytic Oxidation
Changpeng Lv,
Dan Du,
Chao Wang,
Yingyue Qin,
Jinlong Ge,
Yansong Han,
Junjie Zhu,
Muxin Liu
Affiliations
Changpeng Lv
Anhui Provincial Engineering Laboratory of Silicon-Based Materials, School of Materials and Chemical Engineering, Bengbu University, Bengbu 233030, China
Dan Du
Yankuang Technology Co., Ltd., Shandong Energy Group Co., Ltd., Jinan 250101, China
Chao Wang
Yankuang Technology Co., Ltd., Shandong Energy Group Co., Ltd., Jinan 250101, China
Yingyue Qin
Anhui Provincial Engineering Laboratory of Silicon-Based Materials, School of Materials and Chemical Engineering, Bengbu University, Bengbu 233030, China
Jinlong Ge
Anhui Provincial Engineering Laboratory of Silicon-Based Materials, School of Materials and Chemical Engineering, Bengbu University, Bengbu 233030, China
Yansong Han
Anhui Provincial Engineering Laboratory of Silicon-Based Materials, School of Materials and Chemical Engineering, Bengbu University, Bengbu 233030, China
Junjie Zhu
Anhui Provincial Engineering Laboratory of Silicon-Based Materials, School of Materials and Chemical Engineering, Bengbu University, Bengbu 233030, China
Muxin Liu
Anhui Provincial Engineering Laboratory of Silicon-Based Materials, School of Materials and Chemical Engineering, Bengbu University, Bengbu 233030, China
The development of non-noble Co3O4 catalysts exposing highly active crystal planes to low-temperature methane oxidation is still a challenge. Hence, a facile solvothermal method was adapted to construe flower-like Co3O4 hierarchical microspheres (Co3O4-FL), which are composed of nanosheets with dominantly exposed {112} crystal planes. The flower-like hierarchical structure not only promotes the desorption of high levels of active surface oxygen and enhances reducibility, but also facilitates an increase in lattice oxygen as the active species. As a result, Co3O4-FL catalysts offer improved methane oxidation, with a half methane conversion temperature (T50) of 380 °C (21,000 mL g−1 h−1), which is much lower than that of commercial Co3O4 catalysts (Co3O4-C). This study will provide guidance for non-noble metal catalyst design and preparation for methane oxidation and other oxidative reactions.
