首页|Cobalt-nitrogen co-doped porous carbon sphere as highly efficient catalyst for liquid-phase cyclohexane oxidation with molecular oxygen and the active sites investigation

Cobalt-nitrogen co-doped porous carbon sphere as highly efficient catalyst for liquid-phase cyclohexane oxidation with molecular oxygen and the active sites investigation

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The selective oxidation of cyclohexane to cyclohexanone and cyclohexanol(KA oil)is a challenging issue in the chemical industry.At present the industrial conversion of cyclohexane to cyclohexanone and cyclohexanol is normally controlled at less than 5％selectivity.Thus,the development of highly active and stable catalysts for the aerobic oxidation of cyclohexane is necessary to overcome this low-efficiency process.Therefore,we have developed a cobalt-nitrogen co-doped porous sphere catalyst,Co-NC-x(x is the Zn/Co molar ratio,where x=0,0.5,1,2,and 4)by pyrolyzing resorcinol-formaldehyde resin microspheres.It achieved 88.28％cyclohexanone and cyclohexanol selectivity and a cyclohexane conversion of 8.88％under Co-NC-2.The results showed that the introduction of zinc effectively alleviated the aggregation of Co nanoparticles and optimized the structural properties of the material.In addition,Co0 and pyridinic-N are proposed to be the possible active species,and their proportion efficiently increased in the presence of Zn2+species.In this study,we developed a novel strategy to design highly active catalysts for cyclohexane oxidation.

KA oil productioncyclohexane selective oxidationcobalt-nitrogen co-doped porous carbon spheresmetal-organic framework

Lei Chen、Yuan Sun、Jinshan Chi、Wei Xiong、Pingle Liu、Fang Hao

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College of Chemical Engineering,National & Local United Engineering Research Centre for Chemical Process Simulation and Intensification,Xiangtan University,Xiangtan 411105,China

国家自然科学基金Science and Technology Innovation Program of Hunan Province湖南省教育厅项目湖南省自然科学基金Postgraduates Scientific Research Innovation Project of Xiangtan UniversityCollaborative Innovation Center of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization,and

221782942022RC111722A01252021JJ30663QL20220146

2024

10.1007/s11705-024-2395-3

化学科学与工程前沿
高等教育出版社

化学科学与工程前沿

CSTPCDEI
影响因子：0.172
ISSN：2095-0179
年,卷(期)：2024.18(3)
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