Abstract
A series of Co-containing catalysts have been obtained from Co2Al layered double hydroxide (Co2Al-LDH) via calcining it under different temperatures. The characterization results demonstrated that calcination significantly impacted the structure, physic-chemical properties and the catalytic performance in the aerobic oxidation of ethylbenzene. The sample treated under 250 ℃ (Co2Al-LDO(250)) exhibited the highest catalytic activity and selectivity to the corresponding acetophenone, which was proposed to be related to its high specific surface area and high content of Co2+ in the surface. Under the optimized conditions (ethylbenzene 1 mmol, NHPI 0.1 mmol, Co2Al-LDO(250) 0.1 g, trifluorotoluene 3 mL, O2 5 mL/min, 100 ℃, 8 h), the conversion of ethylbenzene and selectivity of acetophenone reached 75.3% and 93.4%, respectively, and no obvious loss of activity was observed when the spent catalyst reused in six consecutive runs.
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Acknowledgements
This work was supported by Advanced Catalysis and Green Manufacturing Collaborative Innovation Center of Changzhou University, A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), Natural Science Foundation for Colleges and Universities in Jiangsu Province (Grant No. 20KJA530003), Qinglan Project of Jiangsu Province and Changzhou Key Technology R&D Program for Social Development (Grant No. CE20205054).
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Qin, L., Lu, W., Wu, Z. et al. Catalyst Performance of the Calcined Products of CoAl Layered Double Hydroxide in the Aerobic Oxidation of Ethylbenzene. Catal Lett 153, 1818–1825 (2023). https://doi.org/10.1007/s10562-022-04117-w
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DOI: https://doi.org/10.1007/s10562-022-04117-w